Difference between revisions of "Grape" - New World Encyclopedia
({{Paid}}) |
|||
| (8 intermediate revisions by 5 users not shown) | |||
| Line 1: | Line 1: | ||
| − | {{ | + | {{Ebcompleted}}{{Copyedited}}{{Approved}}{{Images OK}}{{Submitted}}{{Paid}}{{2Copyedited}} |
[[Image:Close up grapes.jpg|thumb|right|250px|[[Red wine]] grapes]] | [[Image:Close up grapes.jpg|thumb|right|250px|[[Red wine]] grapes]] | ||
| − | '''Grape''' is the common name for any of the woody, vining [[plant]]s belonging to the about 60 species comprising the genus '''''Vitis''''' in the [[flowering plant]] family [[Vitaceae]]. It is also the name for the edible | + | '''Grape''' is the common name for any of the woody, vining [[plant]]s belonging to the about 60 [[species]] comprising the [[genus]] '''''Vitis''''' in the [[flowering plant]] family [[Vitaceae]]. It is also the name for the edible [[fruit]] that grows on these [[Perennial plant|perennial]] and [[tree#Evergreen versus deciduous|deciduous]] plants. Some consider grape a common term for all members of the family Vitaceae. |
| − | The fruits (grapes) can be eaten raw or used for making [[jam]], [[grape juice]], [[Jelly (fruit preserves)|jelly]], [[wine]], and [[grape seed oil]]. The widely cultivated ''Vitis vinifera'', the common grape vine, which is native to the Mediterranean region, central Europe, and southwestern Asia, is one of the oldest cultivated plants, with records to 4000 | + | The fruits (grapes) can be eaten raw or used for making [[jam]], [[grape juice]], [[Jelly (fruit preserves)|jelly]], [[wine]], and [[grape seed oil]]. The widely cultivated ''Vitis vinifera'', the common grape vine, which is native to the Mediterranean region, central [[Europe]], and southwestern [[Asia]], is one of the oldest cultivated plants, with records to 4000 B.C.E. in [[Egypt]] (Bender and Bender 2005), and it is frequently mentioned in the [[Bible]]. Human [[creativity]] is apparent in the numerous cultivars of grapes created by people, as well as the many uses of the fruit that have been invented. |
| − | Grapes not only provide commercial, aesthetic, and | + | Grapes not only provide [[commerce|commercial]], aesthetic, and [[nutrition]]al values for humans but also benefit the [[ecosystem]] by serving as food for various [[insect]]s and [[bird]]s. |
The study and cultivation of grapevines is called [[viticulture]]. | The study and cultivation of grapevines is called [[viticulture]]. | ||
| Line 51: | Line 51: | ||
*''[[Vitis vulpina]]'' | *''[[Vitis vulpina]]'' | ||
}} | }} | ||
| − | '''''Vitis''''' is a [[genus]] | + | '''''Vitis''''' is a [[genus]] comprising about 60 [[species]] of vining [[plant]]s in the [[Dicotyledon|dicotyledonous]] [[flowering plant]] family [[Vitaceae]]. The family name, which is derived from the genus ''Vitis'', sometimes appears as Vitidaceae, but Vitaceae is a conserved name and therefore has priority over both Vitidaceae and another name sometimes found in older literature, Ampelidaceae. |
| − | The ''Vitis'' genus is made up of species predominantly from the Northern | + | The ''Vitis'' genus is made up of species predominantly from the [[Northern Hemisphere]]. Vitaceae are a family of dicotyledonous flowering plants including the grape and Virginia creeper. |
| − | Vitaceae are a family of dicotyledonous flowering plants including the grape and Virginia creeper | ||
[[Image:Vigne inflorescence 2.jpg|left|thumb|Flower buds of ''Vitis vinifera'']] | [[Image:Vigne inflorescence 2.jpg|left|thumb|Flower buds of ''Vitis vinifera'']] | ||
| − | ''Vitis'' is distinguished from other | + | ''Vitis'' is distinguished from other genera of Vitaceae by having petals that remain joined at the tip and detach from the base to fall together as a [[calyptra]] or "cap" (Gleason and Britton 1963). The [[flower]]s are unisexual or modified to act functionally as unisexual; they are pentamerous (having five sets of flower parts) with a hypogynous disk (a receptacle below the ovary that supports such floral parts as petals, sepals, and stamens). Calyx (the sepals combined) is greatly reduced or nonexistent in most species and the petals are joined at the summit into one unit but separated at the base. Flower buds are formed later in the growing season and over winter for blooming in spring of the next year. Two types of flowers are produced: sterile flowers with five long filaments, and erect stamens with undeveloped pistils; and fertile flowers with well-developed pistils and five undeveloped reflexed stamens. The [[fruit]] is a [[berry]], ovid in shape and juicy (Gleason and Britton 1963). |
| − | In the wild, all species of ''Vitis'' are normally [[plant sexuality|dioecious]], but under domestication, variants with [[perfect flower]]s appear to have been selected. | + | In the wild, all species of ''Vitis'' are normally [[plant sexuality|dioecious]] (unisexual), but under domestication, variants with [[perfect flower]]s (having both male and female parts) appear to have been selected. |
| − | Most ''Vitis'' species have 38 | + | Most ''Vitis'' species have 38 [[chromosome]]s (n=19), but there are 40 (n=20) in subgenus ''[[Muscadinia]].'' In that respect the ''Muscadinia'' are the same as such other ''Vitaceae'' as ''[[Ampelocissus]],'' ''[[Parthenocissus]],'' and ''[[Ampelopsis]].'' |
=== Species === | === Species === | ||
[[Image:Ornamental grape.jpg|thumb|left|''Vitis coignetiae'' with autumn leaves]] | [[Image:Ornamental grape.jpg|thumb|left|''Vitis coignetiae'' with autumn leaves]] | ||
| − | Most ''Vitis'' species are found in the temperate regions of the Northern Hemisphere in [[North America]] and [[Asia]] with a few in the tropics. The wine grape ''Vitis vinifera'' originated in southern [[Europe]] and southwestern Asia. | + | Most ''Vitis'' species are found in the temperate regions of the [[Northern Hemisphere]] in [[North America]] and [[Asia]] with a few in the tropics. The wine grape ''Vitis vinifera'' originated in southern [[Europe]] and southwestern Asia. |
The species occur in widely different geographical areas and show a great diversity of form. However they are sufficiently closely related to allow easy interbreeding and the resultant interspecific hybrids are invariably fertile and vigorous. Thus the concept of a species is less well defined and more likely represents the identification of different ecotypes of ''Vitis'' that have evolved in distinct geographical and environmental circumstances. | The species occur in widely different geographical areas and show a great diversity of form. However they are sufficiently closely related to allow easy interbreeding and the resultant interspecific hybrids are invariably fertile and vigorous. Thus the concept of a species is less well defined and more likely represents the identification of different ecotypes of ''Vitis'' that have evolved in distinct geographical and environmental circumstances. | ||
| − | The exact number of species is not certain, with species in | + | The exact number of species is not certain, with species in Asia in particular being poorly defined. Estimates range from 40 to more than 60 different species (Galet 2000). Some of the more notable include: |
| − | *''[[Vitis vinifera]]'', the European grapevine | + | *''[[Vitis vinifera]]'', the European grapevine; native to the Mediterranean and Central Asia. |
| − | *''[[Vitis labrusca]]'', the fox grapevine, the North American table and grape juice grapevines, sometimes used for wine | + | *''[[Vitis labrusca]]'', the fox grapevine, the North American table and grape juice grapevines, sometimes used for wine; native to the Eastern United States and [[Canada]]. |
| − | *''[[Vitis riparia]]'', the Riverbank grapevine, a wild vine of [[North America]], sometimes used for winemaking and for jam | + | *''[[Vitis riparia]]'', the Riverbank grapevine, a wild vine of [[North America]], sometimes used for winemaking and for jam; native to the entire [[Eastern United States]] and north to [[Quebec]]. |
| − | *''[[Vitis rotundifolia]]'' (syn. ''Muscadinia rotundifolia''), the [[Muscadine]], used for jams and wine | + | *''[[Vitis rotundifolia]]'' (syn. ''Muscadinia rotundifolia''), the [[Muscadine]], used for jams and wine; native to the [[Southeastern United States]] from [[Delaware]] to the [[Gulf of Mexico]]. |
| − | *''[[Vitis vulpina]]'' | + | *''[[Vitis vulpina]]'', frost grape; native to the [[Midwest]] east to the coast up through [[New York]]. |
| − | *''[[Vitis coignetiae]]'' | + | *''[[Vitis coignetiae]]'', crimson glory vine, a species from East Asia grown as an [[ornamental plant]] for its crimson autumn foliage. |
| − | *''[[Vitis amurensis]]'' | + | *''[[Vitis amurensis]]'', most important Asian species. |
| − | The [[sea grape]] ''[[Coccoloba uvifera]]'' is not a true grape since it is actually a member of the | + | The [[sea grape]] ''[[Coccoloba uvifera]]'' is not a true grape since it is actually a member of the [[buckwheat]] family ''[[Polygonaceae]].'' It is native to the islands of the [[Caribbean]]. |
| − | There are many | + | There are many [[cultivar]]s of grapevines; most are cultivars of ''V. vinifera.'' |
| − | [[Hybrid]] grapes also exist, and these are primarily crosses between ''V. vinifera'' and one or more of ''V. labrusca'' | + | [[Hybrid]] grapes also exist, and these are primarily crosses between ''V. vinifera'' and one or more of ''V. labrusca,'' ''V. riparia,'' or ''V. aestivalis.'' Hybrids tend to be less susceptible to frost and disease (notably [[phylloxera]]), but wine from some hybrids may have a little of the characteristic "foxy" taste of ''V. labrusca.'' |
===Fruit=== | ===Fruit=== | ||
| − | Grapes grow in clusters of 6 to 300, and can be black, blue, golden, green, purple, red, pink, brown, peach, or white. White grapes are | + | Grapes grow in clusters of 6 to 300, and can be black, blue, golden, green, purple, red, pink, brown, peach, or white. White grapes are [[evolution]]arily derived from the red grape. Mutations in two regulatory [[gene]]s turn off production of [[anthocyanin]], which is responsible for the color of the red grape (Walker et al. 2007). |
==Commercial distribution == | ==Commercial distribution == | ||
[[Image:2005grape.PNG|thumb|left|Grape output in 2005]] | [[Image:2005grape.PNG|thumb|left|Grape output in 2005]] | ||
| + | According to the 2002 report of the Food and Agriculture Organization, 75,866 square kilometers (29,291 square miles) of the world is dedicated to grapes. Approximately 71 percent of world grape production is used for wine, 27 percent as fresh fruit, and 2 percent as dried fruit. A portion of grape production goes to producing grape juice to be used as a sweetener for fruits canned "with no added sugar" and "100 percent natural." The area dedicated to vineyards is increasing by about 2 percent per year.<br style="clear:both"/>The following list of top wine-producers shows the corresponding areas dedicated to grapes for wine making: | ||
| + | *[[Spain]] 11,750 km² (4,537 mi²) | ||
| + | *[[France]] 8,640 km² (3,336 mi²) | ||
| + | *[[Italy]] 8,270 km² (3,193 mi²) | ||
| + | *[[Turkey]] 8,120 km² (3,135 mi²) | ||
| + | *[[United States]] 4,150 km² (1,602 mi²) | ||
| + | *[[Iran]] 2,860 km² (1,104 mi²) | ||
| + | *[[Romania]] 2,480 km² (957 mi²) | ||
| + | *[[Portugal]] 2,160 km² (834 mi²) | ||
| + | *[[Argentina]] 2,080 km² (803 mi²) | ||
| + | *[[Australia]] 1,642 km² (634 mi²) | ||
[[Image:GrapeField.jpg|thumb|250px|Grapevines]] | [[Image:GrapeField.jpg|thumb|250px|Grapevines]] | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
== Seedless grapes == | == Seedless grapes == | ||
| − | Seedlessness is a highly desirable subjective quality in table grape selection, and seedless | + | Seedlessness is a highly desirable subjective quality in table grape selection, and seedless [[cultivar]]s now make up the overwhelming majority of table grape plantings. Because grapevines are vegetatively propagated by cuttings, the lack of [[seed]]s does not present a problem for reproduction. It is, however, an issue for breeders, who must either use a seeded variety as the female parent or rescue [[embryo]]s early in development using [[Plant tissue culture|tissue culture]] techniques. |
| − | There are several sources of the seedlessness trait, and essentially all commercial cultivators get it from one of three sources: Thompson seedless, Russian seedless, and black monukka. All are cultivars of ''[[Vitis vinifera]]'' | + | There are several sources of the seedlessness trait, and essentially all commercial cultivators get it from one of three sources: Thompson seedless, Russian seedless, and black monukka. All are cultivars of ''[[Vitis vinifera]].'' |
Contrary to the improved eating quality of seedlessness is the loss of potential health benefits provided by the enriched [[phytochemical]] content of grape seeds (Shi et al. 2003; Parry et al. 2006). | Contrary to the improved eating quality of seedlessness is the loss of potential health benefits provided by the enriched [[phytochemical]] content of grape seeds (Shi et al. 2003; Parry et al. 2006). | ||
| Line 114: | Line 113: | ||
Today, grapes are eaten fresh as table fruit, or used to make [[wine]], [[grape juice]], [[jam]], [[jelly]], and [[grape seed oil]]. Some varieties are used for drying to produce raisins, currants, and sultanas. A ''[[raisin]]'' is any dried grape. Grape seed oil is used for salad dressings, marinades, deep frying, flavored oils, baking, massage oil, sunburn repair lotion, hair products, body hygiene creams, lip balm, and hand creams | Today, grapes are eaten fresh as table fruit, or used to make [[wine]], [[grape juice]], [[jam]], [[jelly]], and [[grape seed oil]]. Some varieties are used for drying to produce raisins, currants, and sultanas. A ''[[raisin]]'' is any dried grape. Grape seed oil is used for salad dressings, marinades, deep frying, flavored oils, baking, massage oil, sunburn repair lotion, hair products, body hygiene creams, lip balm, and hand creams | ||
| − | + | The of grapes in [[Neolithic]] times was substantiated by the discovery of 7,000 year-old [[wine]] storage jars in present-day [[Georgia (country)|Georgia]] in 1996 (Berkowitz 1996). Further evidence shows the [[Mesopotamia]]ns and [[Ancient Egypt]]ians had vine plantations and wine-making skills. | |
| − | [[Greek philosophy|Greek philosophers]] praised the healing powers of grapes both whole and in the form of wine. ''Vitis vinifera'' [[farming|cultivation]] and [[winemaking]] in [[China]] began during the [[Han Dynasty]] in the | + | [[Greek philosophy|Greek philosophers]] praised the healing powers of grapes both whole and in the form of wine. ''Vitis vinifera'' [[farming|cultivation]] and [[winemaking]] in [[China]] began during the [[Han Dynasty]] in the second century B.C.E. (Plocher et al. 2003), with the importation of the species from [[Ta-Yuan]]. However, wild vine "mountain grapes" like ''[[Vitis thunbergii]]'' were being used for winemaking before that time (Eijkhoff 2000) |
| − | Using the sap of grapevines, European folk healers claimed to cure [[skin]] and [[eye]] [[disease]]s. | + | Using the sap of grapevines, European folk healers claimed to cure [[skin]] and [[eye]] [[disease]]s. Other historical uses include the [[Leaf|leaves]] being used to stop bleeding, pain, and [[inflammation]] of [[hemorrhoids]]. For treating sore throats, unripe grapes were used, and raisins were given as treatments for consumption ([[tuberculosis]]), [[constipation]], and [[thirst]]. For the treatment of [[cancer]], [[cholera]], [[smallpox]], [[nausea]], skin and eye infections as well as [[kidney]] and [[liver]] diseases, ripe grapes were used. |
| − | Today, various health benefits | + | Today, various health benefits have been attributed to consumption of grapes. |
| − | Comparing diets among | + | Comparing diets among Western countries, researchers have discovered that although the French tend to eat higher levels of animal fat, surprisingly the incidence of [[heart disease]] remains low in [[France]]. This phenomenon has been named the [[French Paradox]]. There is speculation that one explanation could be the greater consumption of red wine in France. Something in the grape helps to lower [[cholesterol]] levels in the body and thus slows the build up of deposits in the [[artery|arteries]]. Doctors do not recommend excessive consumption of red wine, however, because of other problems related to consumption of [[alcohol]]. |
[[Image:Ripe grapes.jpg|left|thumb|Ripe table grapes ready to be eaten]] | [[Image:Ripe grapes.jpg|left|thumb|Ripe table grapes ready to be eaten]] | ||
| − | Compounds such as [[resveratrol]] (a [[polyphenol antioxidant]]) have been discovered in grapes and these have been positively linked to fighting | + | Compounds such as [[resveratrol]] (a [[polyphenol antioxidant]]) have been discovered in grapes and these have been positively linked to fighting cancer, heart disease, degenerative [[nerve]] disease, and other ailments. Resveratrol is produced by several [[plant]]s, apparently for its [[antifungal drug|antifungal]] properties. Resveratrol has been shown to modulate the [[metabolism]] of [[lipid]]s, and to inhibit the oxidation of low-density lipoproteins and the aggregation of [[platelet]]s (Chan and Delucchi 2000). |
| − | Resveratrol is found in widely varying amounts in grapes, primarily the skins and seeds. For instance, the skin and seeds of muscadine grapes have about one hundred times the concentration as the pulp (LeBlanc 2005). | + | Resveratrol is found in widely varying amounts in grapes, primarily in the skins and seeds. For instance, the skin and seeds of muscadine grapes have about one hundred times the concentration as the pulp (LeBlanc 2005). Red or not, grapes of all colors offer comparable benefits. Fresh grape skin contains about 50 to 100 micrograms of resveratrol per gram. The amount found in grape skins also varies with the grape [[cultivar]], its geographic origin, and exposure to [[fungus|fungal]] infection. |
| − | Red [[wine]] offers health benefits not found in white wine, because many of the beneficial compounds are found in the | + | Red [[wine]] offers health benefits not found in white wine, because many of the beneficial compounds are found in the skins of the grapes, and only red wine is fermented with the skins. The amount of fermentation time a wine spends in contact with grape skins is an important determinant of its resveratrol content (PBRC 2005). Ordinary non-[[muscadine]] [[red wine]] contains between 0.2 and 5.8 mg/L (Gu et al. 1999), depending on the grape variety, while white wine has much less. (Because red wine is [[Fermentation#Fermentation_in_food_production|fermented]] with the skins, it allows the wine to absorb the resveratrol. White wine is fermented after the skin has been removed.) Wines produced from muscadine grapes, however, both red and white, may contain more than 40 mg/L (Ector et al. 1996; LeBlanc 2005). |
| − | Seedless grape varieties were developed to appeal to consumers, but researchers are now discovering that many of the healthful properties of grapes may actually come from the seeds themselves. Since the 1980s, biochemical and medical studies have demonstrated powerful [[antioxidant]] properties of grape seed [[oligomeric proanthocyanidins]] (Bagchi et al. 2000). Together with [[tannins]], [[polyphenols]], and [[polyunsaturated]] [[fatty acid]]s, these seed constituents display inhibitory activities against several experimental disease models, including | + | Seedless grape varieties were developed to appeal to consumers, but researchers are now discovering that many of the healthful properties of grapes may actually come from the seeds themselves. Since the 1980s, biochemical and medical studies have demonstrated powerful [[antioxidant]] properties of grape seed [[oligomeric proanthocyanidins]] (Bagchi et al. 2000). Together with [[tannins]], [[polyphenols]], and [[polyunsaturated]] [[fatty acid]]s, these seed constituents display inhibitory activities against several experimental disease models, including cancer, [[heart failure]], and other disorders of [[oxidative stress]] (Agarwal et al. 2002; Bagchi et al. 2003). |
[[Grape seed oil]], from the crushed seeds, is used for its perceived wide range of health benefits. | [[Grape seed oil]], from the crushed seeds, is used for its perceived wide range of health benefits. | ||
==References== | ==References== | ||
| − | * Agarwal, C., R. P. Singh, and R. Agarwal. 2002. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=12419835&ordinalpos=5&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Grape seed extract induces apoptotic death of human prostate carcinoma DU145 cells via caspases activation accompanied by dissipation of mitochondrial membrane potential and cytochrome c release]. ''Carcinogenesis'' 23(11): | + | All links retrieved November 9, 2007. |
| + | * Agarwal, C., R. P. Singh, and R. Agarwal. 2002. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=12419835&ordinalpos=5&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Grape seed extract induces apoptotic death of human prostate carcinoma DU145 cells via caspases activation accompanied by dissipation of mitochondrial membrane potential and cytochrome c release]. ''Carcinogenesis'' 23(11): 1869–1876. | ||
| − | * Bagchi, D., M. Bagchi, S. J. Stohs, D. K. Das, S. D. Ray, C. A. Kuszynski, S. S. Joshi, and H. G. Pruess. 2000. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=10962138&ordinalpos=6&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Free radicals and grape seed proanthocyanidin extract: Importance in human health and disease prevention]. ''Toxicology'' 148( | + | * Bagchi, D., M. Bagchi, S. J. Stohs, D. K. Das, S. D. Ray, C. A. Kuszynski, S. S. Joshi, and H. G. Pruess. 2000. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=10962138&ordinalpos=6&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Free radicals and grape seed proanthocyanidin extract: Importance in human health and disease prevention]. ''Toxicology'' 148(2–3): 187–197. |
| − | * Bagchi, D., C. K. Sen, S. D. Ray, D. K. Das, M. Bagchi, H. G. Preuss, and J. A. Vinson. 2003. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=12628506&ordinalpos=4&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Molecular mechanisms of cardioprotection by a novel grape seed proanthocyanidin extract]. ''Mutat Res.'' | + | * Bagchi, D., C. K. Sen, S. D. Ray, D. K. Das, M. Bagchi, H. G. Preuss, and J. A. Vinson. 2003. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=12628506&ordinalpos=4&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Molecular mechanisms of cardioprotection by a novel grape seed proanthocyanidin extract]. ''Mutat Res.'' 523–524: 87–97. |
| − | * Bender, D. A., and A. E. Bender. 2005. ''A Dictionary of Food and Nutrition'' | + | * Bender, D. A., and A. E. Bender. 2005. ''A Dictionary of Food and Nutrition.'' New York: Oxford University Press. ISBN 0198609612. |
| − | * Berkowitz, M. 1996. [http://www.archaeology.org/9609/newsbriefs/wine.html World's earliest wine]. ''Archaeology'' 49(5). | + | * Berkowitz, M. 1996. [http://www.archaeology.org/9609/newsbriefs/wine.html World's earliest wine]. ''Archaeology'' 49(5). |
| − | * Chan, W. K., and A. B. Delucchi. 2000. [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=11125847 Resveratrol, a red wine constituent, is a mechanism-based inactivator of cytochrome P450 3A4]. ''Life Sci'' 67(25): | + | * Chan, W. K., and A. B. Delucchi. 2000. [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=11125847 Resveratrol, a red wine constituent, is a mechanism-based inactivator of cytochrome P450 3A4]. ''Life Sci'' 67(25): 3103–3112. |
| − | * Ector, B. J., J. B. Magee, C. P. Hegwood, and M. J. Coign. 1996. [http://www.ajevonline.org/cgi/content/abstract/47/1/57 Resveratrol concentration in muscadine berries, juice, pomace, purees, seeds, and wines]. ''Am. J. Enol. Vitic.'' 47(1): | + | * Ector, B. J., J. B. Magee, C. P. Hegwood, and M. J. Coign. 1996. [http://www.ajevonline.org/cgi/content/abstract/47/1/57 Resveratrol concentration in muscadine berries, juice, pomace, purees, seeds, and wines]. ''Am. J. Enol. Vitic.'' 47(1): 57–62. |
| − | * Eijkhoff, P. 2000. [http://www.eykhoff.nl/Wine%20in%20China.pdf Wine in China; Its history and contemporary developments]. ''Eykhoff.nl'' | + | * Eijkhoff, P. 2000. [http://www.eykhoff.nl/Wine%20in%20China.pdf Wine in China; Its history and contemporary developments]. ''Eykhoff.nl.'' |
| − | * Food and Agricultural Organization (FAO). 2002. [http://news.reseau-concept.net/images/oiv_uk/Client/Stat_2002_def2_EN.pdf Situation report and statistics for the world vitivinicultural sector in 2002]. ''FAO'' | + | * Food and Agricultural Organization (FAO). 2002. [http://news.reseau-concept.net/images/oiv_uk/Client/Stat_2002_def2_EN.pdf Situation report and statistics for the world vitivinicultural sector in 2002]. ''FAO.'' |
| − | * Galet, P. 2000. ''Dictionnaire Encyclopédique des Cépages'' | + | * Galet, P. 2000. ''Dictionnaire Encyclopédique des Cépages.'' Hachette Pratique. ISBN 2012363318. |
| − | * Gleason, H. A., and N. L. Britton. 1963. ''The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada'' | + | * Gleason, H. A., and N. L. Britton. 1963. ''The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada.'' New York: Published for the New York Botanical Garden by Hafner Pub. |
| − | * Gu, X., L. Creasy, A. Kester, et al. 1999. Capillary electrophoretic determination of resveratrol in wines. ''J Agric Food Chem'' 47: | + | * Gu, X., L. Creasy, A. Kester, et al. 1999. Capillary electrophoretic determination of resveratrol in wines. ''J Agric Food Chem'' 47: 3323–3277. |
| − | * Herbst, S. T. 2001. ''The New Food Lover's Companion: Comprehensive Definitions of Nearly 6,000 Food, Drink, and Culinary Terms. Barron's Cooking Guide'' | + | * Herbst, S. T. 2001. ''The New Food Lover's Companion: Comprehensive Definitions of Nearly 6,000 Food, Drink, and Culinary Terms. Barron's Cooking Guide.'' Hauppauge, NY: Barron's Educational Series. ISBN 0764112589. |
| − | * LeBlanc, M. R. 2005. [http://etd.lsu.edu/docs/available/etd-01202006-082858 Cultivar, juice extraction, ultraviolet irradiation and storage influence the stilbene content of muscadine grapes (''Vitis rotundifolia'' Michx)]. ''Louisiana State University'' | + | * LeBlanc, M. R. 2005. [http://etd.lsu.edu/docs/available/etd-01202006-082858 Cultivar, juice extraction, ultraviolet irradiation and storage influence the stilbene content of muscadine grapes (''Vitis rotundifolia'' Michx)]. ''Louisiana State University.'' |
| − | * Parry, J., L. Su, J. Moore, Z. Cheng, M. Luther, J. N. Rao, J. Y. Wang, and L. L. Yu. 2006. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=16719495&ordinalpos=3&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Chemical compositions, antioxidant capacities, and antiproliferative activities of selected fruit seed flours]. ''J Agric Food Chem.'' 54(11): | + | * Parry, J., L. Su, J. Moore, Z. Cheng, M. Luther, J. N. Rao, J. Y. Wang, and L. L. Yu. 2006. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=16719495&ordinalpos=3&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Chemical compositions, antioxidant capacities, and antiproliferative activities of selected fruit seed flours]. ''J Agric Food Chem.'' 54(11): 3773–3778. |
| − | * Pennington Biomedical Research Center (PBRC). 2005. [http://www.pbrc.edu/Division_of_Education/pdf/PNS_resveratrol.pdf Resveratrol]. ''Pennington Nutrition Series'' No 7 | + | * Pennington Biomedical Research Center (PBRC). 2005. [http://www.pbrc.edu/Division_of_Education/pdf/PNS_resveratrol.pdf Resveratrol]. ''Pennington Nutrition Series'' No 7. |
| − | * Plocher, T., G. Rouse, and M. Hart. 2003. [http://www.northernwinework.com/images/extra/chinatrip/Chinatrip.pdf Discovering grapes and wine in the far north of China]. ''NorthernWinework'' | + | * Plocher, T., G. Rouse, and M. Hart. 2003. [http://www.northernwinework.com/images/extra/chinatrip/Chinatrip.pdf Discovering grapes and wine in the far north of China]. ''NorthernWinework.'' |
| − | * Shi, J., J. Yu, J. E. Pohorly,and Y. Kakuda. 2003. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=14977436&ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Polyphenolics in grape seeds: Biochemistry and functionality]. ''J Med Food'' 6(4): | + | * Shi, J., J. Yu, J. E. Pohorly,and Y. Kakuda. 2003. [http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=14977436&ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum Polyphenolics in grape seeds: Biochemistry and functionality]. ''J Med Food'' 6(4): 291–299. |
* Walker, A. R., E. Lee, J. Bogs, D. A. McDavid, M. R. Thomas, and S. P. Robinson. 2007. White grapes arose through the mutation of two similar and adjacent regulatory genes. ''Plant J'' 49(5): 772–785. PMID 17316172. | * Walker, A. R., E. Lee, J. Bogs, D. A. McDavid, M. R. Thomas, and S. P. Robinson. 2007. White grapes arose through the mutation of two similar and adjacent regulatory genes. ''Plant J'' 49(5): 772–785. PMID 17316172. | ||
| Line 176: | Line 176: | ||
{{credit|Grape|156354454|Vitis|155575436|Vitaceae|154381849|Grape_seed_oil|153860946}} | {{credit|Grape|156354454|Vitis|155575436|Vitaceae|154381849|Grape_seed_oil|153860946}} | ||
| + | [[Category:Life sciences]] | ||
| + | [[Category:Plants]] | ||
| + | [[Category:Food]] | ||
Latest revision as of 20:04, 19 August 2008
Grape is the common name for any of the woody, vining plants belonging to the about 60 species comprising the genus Vitis in the flowering plant family Vitaceae. It is also the name for the edible fruit that grows on these perennial and deciduous plants. Some consider grape a common term for all members of the family Vitaceae.
The fruits (grapes) can be eaten raw or used for making jam, grape juice, jelly, wine, and grape seed oil. The widely cultivated Vitis vinifera, the common grape vine, which is native to the Mediterranean region, central Europe, and southwestern Asia, is one of the oldest cultivated plants, with records to 4000 B.C.E. in Egypt (Bender and Bender 2005), and it is frequently mentioned in the Bible. Human creativity is apparent in the numerous cultivars of grapes created by people, as well as the many uses of the fruit that have been invented.
Grapes not only provide commercial, aesthetic, and nutritional values for humans but also benefit the ecosystem by serving as food for various insects and birds.
The study and cultivation of grapevines is called viticulture.
Vitus
| Vitis | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Vitis californica with fruit
| ||||||||||||
| Scientific classification | ||||||||||||
| ||||||||||||
|
Vitis is a genus comprising about 60 species of vining plants in the dicotyledonous flowering plant family Vitaceae. The family name, which is derived from the genus Vitis, sometimes appears as Vitidaceae, but Vitaceae is a conserved name and therefore has priority over both Vitidaceae and another name sometimes found in older literature, Ampelidaceae.
The Vitis genus is made up of species predominantly from the Northern Hemisphere. Vitaceae are a family of dicotyledonous flowering plants including the grape and Virginia creeper.
Vitis is distinguished from other genera of Vitaceae by having petals that remain joined at the tip and detach from the base to fall together as a calyptra or "cap" (Gleason and Britton 1963). The flowers are unisexual or modified to act functionally as unisexual; they are pentamerous (having five sets of flower parts) with a hypogynous disk (a receptacle below the ovary that supports such floral parts as petals, sepals, and stamens). Calyx (the sepals combined) is greatly reduced or nonexistent in most species and the petals are joined at the summit into one unit but separated at the base. Flower buds are formed later in the growing season and over winter for blooming in spring of the next year. Two types of flowers are produced: sterile flowers with five long filaments, and erect stamens with undeveloped pistils; and fertile flowers with well-developed pistils and five undeveloped reflexed stamens. The fruit is a berry, ovid in shape and juicy (Gleason and Britton 1963).
In the wild, all species of Vitis are normally dioecious (unisexual), but under domestication, variants with perfect flowers (having both male and female parts) appear to have been selected.
Most Vitis species have 38 chromosomes (n=19), but there are 40 (n=20) in subgenus Muscadinia. In that respect the Muscadinia are the same as such other Vitaceae as Ampelocissus, Parthenocissus, and Ampelopsis.
Species
Most Vitis species are found in the temperate regions of the Northern Hemisphere in North America and Asia with a few in the tropics. The wine grape Vitis vinifera originated in southern Europe and southwestern Asia.
The species occur in widely different geographical areas and show a great diversity of form. However they are sufficiently closely related to allow easy interbreeding and the resultant interspecific hybrids are invariably fertile and vigorous. Thus the concept of a species is less well defined and more likely represents the identification of different ecotypes of Vitis that have evolved in distinct geographical and environmental circumstances.
The exact number of species is not certain, with species in Asia in particular being poorly defined. Estimates range from 40 to more than 60 different species (Galet 2000). Some of the more notable include:
- Vitis vinifera, the European grapevine; native to the Mediterranean and Central Asia.
- Vitis labrusca, the fox grapevine, the North American table and grape juice grapevines, sometimes used for wine; native to the Eastern United States and Canada.
- Vitis riparia, the Riverbank grapevine, a wild vine of North America, sometimes used for winemaking and for jam; native to the entire Eastern United States and north to Quebec.
- Vitis rotundifolia (syn. Muscadinia rotundifolia), the Muscadine, used for jams and wine; native to the Southeastern United States from Delaware to the Gulf of Mexico.
- Vitis vulpina, frost grape; native to the Midwest east to the coast up through New York.
- Vitis coignetiae, crimson glory vine, a species from East Asia grown as an ornamental plant for its crimson autumn foliage.
- Vitis amurensis, most important Asian species.
The sea grape Coccoloba uvifera is not a true grape since it is actually a member of the buckwheat family Polygonaceae. It is native to the islands of the Caribbean.
There are many cultivars of grapevines; most are cultivars of V. vinifera.
Hybrid grapes also exist, and these are primarily crosses between V. vinifera and one or more of V. labrusca, V. riparia, or V. aestivalis. Hybrids tend to be less susceptible to frost and disease (notably phylloxera), but wine from some hybrids may have a little of the characteristic "foxy" taste of V. labrusca.
Fruit
Grapes grow in clusters of 6 to 300, and can be black, blue, golden, green, purple, red, pink, brown, peach, or white. White grapes are evolutionarily derived from the red grape. Mutations in two regulatory genes turn off production of anthocyanin, which is responsible for the color of the red grape (Walker et al. 2007).
Commercial distribution
According to the 2002 report of the Food and Agriculture Organization, 75,866 square kilometers (29,291 square miles) of the world is dedicated to grapes. Approximately 71 percent of world grape production is used for wine, 27 percent as fresh fruit, and 2 percent as dried fruit. A portion of grape production goes to producing grape juice to be used as a sweetener for fruits canned "with no added sugar" and "100 percent natural." The area dedicated to vineyards is increasing by about 2 percent per year.
The following list of top wine-producers shows the corresponding areas dedicated to grapes for wine making:
- Spain 11,750 km² (4,537 mi²)
- France 8,640 km² (3,336 mi²)
- Italy 8,270 km² (3,193 mi²)
- Turkey 8,120 km² (3,135 mi²)
- United States 4,150 km² (1,602 mi²)
- Iran 2,860 km² (1,104 mi²)
- Romania 2,480 km² (957 mi²)
- Portugal 2,160 km² (834 mi²)
- Argentina 2,080 km² (803 mi²)
- Australia 1,642 km² (634 mi²)
Seedless grapes
Seedlessness is a highly desirable subjective quality in table grape selection, and seedless cultivars now make up the overwhelming majority of table grape plantings. Because grapevines are vegetatively propagated by cuttings, the lack of seeds does not present a problem for reproduction. It is, however, an issue for breeders, who must either use a seeded variety as the female parent or rescue embryos early in development using tissue culture techniques.
There are several sources of the seedlessness trait, and essentially all commercial cultivators get it from one of three sources: Thompson seedless, Russian seedless, and black monukka. All are cultivars of Vitis vinifera.
Contrary to the improved eating quality of seedlessness is the loss of potential health benefits provided by the enriched phytochemical content of grape seeds (Shi et al. 2003; Parry et al. 2006).
Uses and health benefits
Today, grapes are eaten fresh as table fruit, or used to make wine, grape juice, jam, jelly, and grape seed oil. Some varieties are used for drying to produce raisins, currants, and sultanas. A raisin is any dried grape. Grape seed oil is used for salad dressings, marinades, deep frying, flavored oils, baking, massage oil, sunburn repair lotion, hair products, body hygiene creams, lip balm, and hand creams
The of grapes in Neolithic times was substantiated by the discovery of 7,000 year-old wine storage jars in present-day Georgia in 1996 (Berkowitz 1996). Further evidence shows the Mesopotamians and Ancient Egyptians had vine plantations and wine-making skills.
Greek philosophers praised the healing powers of grapes both whole and in the form of wine. Vitis vinifera cultivation and winemaking in China began during the Han Dynasty in the second century B.C.E. (Plocher et al. 2003), with the importation of the species from Ta-Yuan. However, wild vine "mountain grapes" like Vitis thunbergii were being used for winemaking before that time (Eijkhoff 2000)
Using the sap of grapevines, European folk healers claimed to cure skin and eye diseases. Other historical uses include the leaves being used to stop bleeding, pain, and inflammation of hemorrhoids. For treating sore throats, unripe grapes were used, and raisins were given as treatments for consumption (tuberculosis), constipation, and thirst. For the treatment of cancer, cholera, smallpox, nausea, skin and eye infections as well as kidney and liver diseases, ripe grapes were used.
Today, various health benefits have been attributed to consumption of grapes.
Comparing diets among Western countries, researchers have discovered that although the French tend to eat higher levels of animal fat, surprisingly the incidence of heart disease remains low in France. This phenomenon has been named the French Paradox. There is speculation that one explanation could be the greater consumption of red wine in France. Something in the grape helps to lower cholesterol levels in the body and thus slows the build up of deposits in the arteries. Doctors do not recommend excessive consumption of red wine, however, because of other problems related to consumption of alcohol.
Compounds such as resveratrol (a polyphenol antioxidant) have been discovered in grapes and these have been positively linked to fighting cancer, heart disease, degenerative nerve disease, and other ailments. Resveratrol is produced by several plants, apparently for its antifungal properties. Resveratrol has been shown to modulate the metabolism of lipids, and to inhibit the oxidation of low-density lipoproteins and the aggregation of platelets (Chan and Delucchi 2000).
Resveratrol is found in widely varying amounts in grapes, primarily in the skins and seeds. For instance, the skin and seeds of muscadine grapes have about one hundred times the concentration as the pulp (LeBlanc 2005). Red or not, grapes of all colors offer comparable benefits. Fresh grape skin contains about 50 to 100 micrograms of resveratrol per gram. The amount found in grape skins also varies with the grape cultivar, its geographic origin, and exposure to fungal infection.
Red wine offers health benefits not found in white wine, because many of the beneficial compounds are found in the skins of the grapes, and only red wine is fermented with the skins. The amount of fermentation time a wine spends in contact with grape skins is an important determinant of its resveratrol content (PBRC 2005). Ordinary non-muscadine red wine contains between 0.2 and 5.8 mg/L (Gu et al. 1999), depending on the grape variety, while white wine has much less. (Because red wine is fermented with the skins, it allows the wine to absorb the resveratrol. White wine is fermented after the skin has been removed.) Wines produced from muscadine grapes, however, both red and white, may contain more than 40 mg/L (Ector et al. 1996; LeBlanc 2005).
Seedless grape varieties were developed to appeal to consumers, but researchers are now discovering that many of the healthful properties of grapes may actually come from the seeds themselves. Since the 1980s, biochemical and medical studies have demonstrated powerful antioxidant properties of grape seed oligomeric proanthocyanidins (Bagchi et al. 2000). Together with tannins, polyphenols, and polyunsaturated fatty acids, these seed constituents display inhibitory activities against several experimental disease models, including cancer, heart failure, and other disorders of oxidative stress (Agarwal et al. 2002; Bagchi et al. 2003).
Grape seed oil, from the crushed seeds, is used for its perceived wide range of health benefits.
ReferencesISBN links support NWE through referral fees
All links retrieved November 9, 2007.
- Agarwal, C., R. P. Singh, and R. Agarwal. 2002. Grape seed extract induces apoptotic death of human prostate carcinoma DU145 cells via caspases activation accompanied by dissipation of mitochondrial membrane potential and cytochrome c release. Carcinogenesis 23(11): 1869–1876.
- Bagchi, D., M. Bagchi, S. J. Stohs, D. K. Das, S. D. Ray, C. A. Kuszynski, S. S. Joshi, and H. G. Pruess. 2000. Free radicals and grape seed proanthocyanidin extract: Importance in human health and disease prevention. Toxicology 148(2–3): 187–197.
- Bagchi, D., C. K. Sen, S. D. Ray, D. K. Das, M. Bagchi, H. G. Preuss, and J. A. Vinson. 2003. Molecular mechanisms of cardioprotection by a novel grape seed proanthocyanidin extract. Mutat Res. 523–524: 87–97.
- Bender, D. A., and A. E. Bender. 2005. A Dictionary of Food and Nutrition. New York: Oxford University Press. ISBN 0198609612.
- Berkowitz, M. 1996. World's earliest wine. Archaeology 49(5).
- Chan, W. K., and A. B. Delucchi. 2000. Resveratrol, a red wine constituent, is a mechanism-based inactivator of cytochrome P450 3A4. Life Sci 67(25): 3103–3112.
- Ector, B. J., J. B. Magee, C. P. Hegwood, and M. J. Coign. 1996. Resveratrol concentration in muscadine berries, juice, pomace, purees, seeds, and wines. Am. J. Enol. Vitic. 47(1): 57–62.
- Eijkhoff, P. 2000. Wine in China; Its history and contemporary developments. Eykhoff.nl.
- Food and Agricultural Organization (FAO). 2002. Situation report and statistics for the world vitivinicultural sector in 2002. FAO.
- Galet, P. 2000. Dictionnaire Encyclopédique des Cépages. Hachette Pratique. ISBN 2012363318.
- Gleason, H. A., and N. L. Britton. 1963. The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada. New York: Published for the New York Botanical Garden by Hafner Pub.
- Gu, X., L. Creasy, A. Kester, et al. 1999. Capillary electrophoretic determination of resveratrol in wines. J Agric Food Chem 47: 3323–3277.
- Herbst, S. T. 2001. The New Food Lover's Companion: Comprehensive Definitions of Nearly 6,000 Food, Drink, and Culinary Terms. Barron's Cooking Guide. Hauppauge, NY: Barron's Educational Series. ISBN 0764112589.
- LeBlanc, M. R. 2005. Cultivar, juice extraction, ultraviolet irradiation and storage influence the stilbene content of muscadine grapes (Vitis rotundifolia Michx). Louisiana State University.
- Parry, J., L. Su, J. Moore, Z. Cheng, M. Luther, J. N. Rao, J. Y. Wang, and L. L. Yu. 2006. Chemical compositions, antioxidant capacities, and antiproliferative activities of selected fruit seed flours. J Agric Food Chem. 54(11): 3773–3778.
- Pennington Biomedical Research Center (PBRC). 2005. Resveratrol. Pennington Nutrition Series No 7.
- Plocher, T., G. Rouse, and M. Hart. 2003. Discovering grapes and wine in the far north of China. NorthernWinework.
- Shi, J., J. Yu, J. E. Pohorly,and Y. Kakuda. 2003. Polyphenolics in grape seeds: Biochemistry and functionality. J Med Food 6(4): 291–299.
- Walker, A. R., E. Lee, J. Bogs, D. A. McDavid, M. R. Thomas, and S. P. Robinson. 2007. White grapes arose through the mutation of two similar and adjacent regulatory genes. Plant J 49(5): 772–785. PMID 17316172.
Credits
New World Encyclopedia writers and editors rewrote and completed the Wikipedia article in accordance with New World Encyclopedia standards. This article abides by terms of the Creative Commons CC-by-sa 3.0 License (CC-by-sa), which may be used and disseminated with proper attribution. Credit is due under the terms of this license that can reference both the New World Encyclopedia contributors and the selfless volunteer contributors of the Wikimedia Foundation. To cite this article click here for a list of acceptable citing formats.The history of earlier contributions by wikipedians is accessible to researchers here:
The history of this article since it was imported to New World Encyclopedia:
Note: Some restrictions may apply to use of individual images which are separately licensed.
