Grape
Grapes are the
fruit that grow on a woody grape
vine. The grapevine belongs to the family Vitaceae. Grapes grow in clusters of 6 to 300, and can be black, blue, golden, green, purple-red and white. They can be eaten raw or used for making
grape juice,
jelly,
wine, and
grape seed oil.
Raisins are the dried fruit of the grapevine, and the name actually comes from the French word for "grape". Wild grapevines are often considered a nuisance weed, as they cover other plants with their usually rather aggressive growth.
Encyclopedia
Grapes are the
fruit that grow on a woody grape
vine. The grapevine belongs to the family Vitaceae. Grapes grow in clusters of 6 to 300, and can be black, blue, golden, green, purple-red and white. They can be eaten raw or used for making
grape juice,
jelly,
wine, and
grape seed oil.
Raisins are the dried fruit of the grapevine, and the name actually comes from the French word for "grape". Wild grapevines are often considered a nuisance weed, as they cover other plants with their usually rather aggressive growth.
Grapevines
Grapevines are used as food plants by the
larvae of some
Lepidoptera species - see list of Lepidoptera which feed on grapevines
.
Many species of grapevines exist and these include:
Vitis vinifera, the European winemaking grapevine. Native to virtually all of mainland Europe.Vitis labrusca, the North American table and grape juice grapevines, sometimes used for wine. Native to the Eastern U.S. and Canada.Vitis riparia, a wild vine of North America, sometimes used for winemaking and for jam. Native to the entire Eastern U.S. and north to Quebec.Vitis rotundifolia, the muscadines, used for jams and wine. Native to the Southeastern U.S. from Delaware to the Gulf of Mexico.Vitis aestivalis, the variety Norton is used for winemakingVitis lincecumii
, Vitis berlandieri
, Vitis cinerea, Vitis rupestris
are used for making hybrid grapevines and for pest-resistant rootstocks.Vitis arizonica
A desert grapevine found in the southwestern US that is hardy against extremes of temperature. Can be used for wines.Vitis californica
A grapevine important to the California wine industry for its rootstock which is able to withstand pests and cooler weather. Native to California and Oregon.Vitis vulpina
Frost grape. Native to the Midwest east to the coast up through New York.
There are many varieties of grapevines; most are cultivars of V. vinifera
.
Hybrid grapes also exist, and these are primarily crosses between V. vinifera and one or more varieties of V. labrusca, V. riparia or V. aestivalis. Hybrids tend to be less susceptible to frost and disease , but wine from some hybrids may have a little of the characteristic "foxy" odor of labrusca.
The sea grape Coccoloba uvifera is actually a member of the Buckwheat family Polygonaceae and is native to the lands of the
Caribbean Sea.
According to the "Food and Agriculture Organization" , 75,866 square kilometres of the world is dedicated to grapes. Approximately 71% of world grape production is used for wine, 27% as fresh fruit, and 2% 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% natural". The area dedicated to vineyards is increasing by about 2% per year.
The following list of top wine-producers shows the corresponding areas dedicated to grapes for wine making:
- Spain 11,750 kmē
- France 8,640 kmē
- Italy 8,270 kmē
- Turkey 8,120 kmē
- United States 4,150 kmē
- Iran 2,860 kmē
- Romania 2,480 kmē
- Portugal 2,160 kmē
- Argentina 2,080 kmē
- China 1,780 kmē
- Australia 1,642 kmē
Sources: FAO, , [https://www.awbc.com.au/winefacts/data/free.asp?subcatid=102 Australian Wine and Brandy Corporation].
Researchers,such as Marty Mayo, comparing diets in western countries have discovered that although the French tend to eat higher levels of animal fat, surprisingly the incidence of heart disease remains low in France. They named this phenomenon the French Paradox. Many scientists now believe the reason is 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. Compounds such as
resveratrol have been discovered in grapes and these have been positively linked to fighting cancer, heart disease, degenerative
nerve disease and other ailments. Doctors do not recommend excessive consumption of red wine, but three or four glasses a week is beneficial and encouraged.
Although many people incorrectly assume that red grapes are more beneficial to the health, in fact grapes of all colors offer comparable benefits. Red wine however does offer some 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.
Another common misconception is that white wine has to be made from green grapes. In fact, it can be made from green or red varieties. Red wines are made from red grapes, but the colouration is a result of including the skins in the fermentation process.
Raisins, currants, and sultanas
A
raisin is any dried grape. A
currant is a dried
Zante grape, the name being a corruption of the
French raisin de Corinthe . A
sultana was originally a raisin made from a specific type of grape of Turkish origin, but the word is now applied to raisins made from common North American grapes and chemically treated to resemble the traditional sultana.
Note that, while
raisin is a French loanword, the word in French refers to the fresh fruit;
grappe refers to the bunch . As
raisin is uncountable in French, a single grape is a
grain de raisin.Note also that
currant has come to refer also to the
blackcurrant and
redcurrant, two berries completely unrelated to grapes.
Grape seed extract
The seeds in grapes are known to contain procyanidolic oligomers, also known as PCOs. Researchers have concluded that PCOs strengthen blood vessels, and improve blood circulation. Grape seed extract may help slow aging, prevent heart disease, deter cancer, lessen allergy symptoms, and eye strain, and fight certain skin diseases. In recent studies grape extract has also been shown to lessen cellulite, and lower cholesterol and blood pressure levels. The use of grape seed extract is available in forms such as: liquid, tablet, and capsule. Grape seed extract has not yet been shown to have any negative effects on consumers.
Seedlessness in Grapes
Seedlessness is a highly desirable trait 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 cultivars get it from one of three sources: 'Thompson Seedless', 'Russian Seedless', and 'Black Monukka'. All are members of
Vitis vinifera, the
European grapevine, hav ...
.
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