Grape

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Grapes Abhar-iran.JPG
Grapes
"Black" (dark blue) and "white" (light green) table grapes Grapes, Rostov-on-Don, Russia.jpg
"Black" (dark blue) and "white" (light green) table grapes

A grape is a fruit, botanically a berry, of the deciduous woody vines of the flowering plant genus Vitis . Grapes are a non-climacteric type of fruit, generally occurring in clusters.

Contents

The cultivation of grapes began approximately 8,000 years ago, and the fruit has been used as human food throughout its history. Eaten fresh or in dried form (as raisins, currants and sultanas), grapes also hold cultural significance in many parts of the world, particularly for their role in winemaking. Other grape-derived products include various types of jam, juice, vinegar and oil.

Grapes, red or green
Nutritional value per 100 g (3.5 oz)
Energy 288 kJ (69 kcal)
18.1 g
Sugars 15.48 g
Dietary fiber 0.9 g
Fat
0.16 g
0.72 g
Vitamins and minerals
Vitamins Quantity
%DV
Thiamine (B1)
6%
0.069 mg
Riboflavin (B2)
5%
0.07 mg
Niacin (B3)
1%
0.188 mg
Pantothenic acid (B5)
1%
0.05 mg
Vitamin B6
5%
0.086 mg
Folate (B9)
1%
2 μg
Choline
1%
5.6 mg
Vitamin C
4%
3.2 mg
Vitamin E
1%
0.19 mg
Vitamin K
12%
14.6 μg
Minerals Quantity
%DV
Calcium
1%
10 mg
Iron
2%
0.36 mg
Magnesium
2%
7 mg
Manganese
3%
0.071 mg
Phosphorus
2%
20 mg
Potassium
6%
191 mg
Sodium
0%
2 mg
Zinc
1%
0.07 mg
Other constituentsQuantity
Water81 g

Percentages estimated using US recommendations for adults, [1] except for potassium, which is estimated based on expert recommendation from the National Academies. [2]

History

The Middle East is generally described as the homeland of grapes and the cultivation of this plant began there 6,000–8,000 years ago. [3] [4] Yeast, one of the earliest domesticated microorganisms, occurs naturally on the skins of grapes, leading to the discovery of alcoholic drinks such as wine. The earliest archeological evidence for a dominant position of wine-making in human culture dates from 8,000 years ago in Georgia. [5] [6] [7]

The oldest known winery, the Areni-1 winery, was found in Armenia and dated back to around 4000 BC. [8] By the 9th century AD, the city of Shiraz was known to produce some of the finest wines in the Middle East. Thus it has been proposed that Syrah red wine is named after Shiraz, a city in Persia where the grape was used to make Shirazi wine. [9]

Ancient Egyptian hieroglyphics record the cultivation of purple grapes, and history attests to the ancient Greeks, Cypriots, Phoenicians, and Romans growing purple grapes both for eating and wine production. [10] The growing of grapes would later spread to other regions in Europe, as well as North Africa, and eventually in North America.

In 2005, a team of archaeologists concluded that Chalcolithic wine jars discovered in Cyprus in the 1930s dated back to 3500 BC, making them the oldest of their kind in the world. [11] Commandaria, a sweet dessert wine from Cyprus, is the oldest manufactured wine in the world with origins as far back as 2000 BC. [12]

In North America, native grapes belonging to various species of the genus Vitis proliferate in the wild across the continent and were a part of the diet of many Native Americans, but they were considered by early European colonists to be unsuitable for wine. In the 19th century, Ephraim Bull of Concord, Massachusetts, cultivated seeds from wild Vitis labrusca vines to create the Concord grape, which would become an important agricultural crop in the United States. [13]

Description

Grapes are a type of fruit that grow in clusters of 15 to 300 and can be crimson, black, dark blue, yellow, green, orange, and pink. "White" grapes are actually green in color and are evolutionarily derived from the purple grape. Mutations in two regulatory genes of white grapes turn off production of anthocyanins, which are responsible for the color of purple grapes. [14] Anthocyanins and other pigment chemicals of the larger family of polyphenols in purple grapes are responsible for the varying shades of purple in red wines. [15] [16] Grapes are typically an ellipsoid shape resembling a prolate spheroid.

Nutrition

Raw grapes are 81% water, 18% carbohydrates, 1% protein, and have negligible fat (table). A 100-gram (3+12-ounce) reference amount of raw grapes supplies 288 kilojoules (69 kilocalories) of food energy and a moderate amount of vitamin K (14% of the Daily Value), with no other micronutrients in significant amounts.

Grapevines

Concord is a variety of North American labrusca grape ConcordGrapes.jpg
Concord is a variety of North American labrusca grape

Most domesticated grapes come from cultivars of Vitis vinifera , a grapevine native to the Mediterranean and Central Asia. Minor amounts of fruit and wine come from American and Asian species such as:

Trade

Top grape exporting countries by years (in USD)
RankCountry20172018201920202021
1Peru673.4M847.3M917.9M1.0B1.5B
2Chile1.2B1.2B1.2B1.0B927.1M
3Netherlands653.3M778.1M721.8M794.5M916.5M
4South Africa572.0M567.4M553.4M567.2M907.3M
5Italy864.8M800.1M724.8M835.1M876.7M
6United States904.9M926.6M857.2M825.2M782.7M
7China735.4M690.1M987.4M1.2B757.3M
8Spain338.4M410.9M343.6M471.6M516.8M
9Australia286.4M286.9M386.5M432.2M344.5M
10India281.7M279.2M320.1M295.9M336.4M
-World8.5B8.7B9.0B9.5B9.9B
Source: Tridge

Distribution and production

Top 20 grape producing countries in 2012. Top grapes countries producers in the world.png
Top 20 grape producing countries in 2012.

According to the Food and Agriculture Organization (FAO), 75,866 square kilometers of the world are 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 reconstituted for fruits canned "with no added sugar" and "100% natural". The area dedicated to vineyards is increasing by about 2% per year.

There are no reliable statistics that break down grape production by variety. It is believed that the most widely planted variety is Sultana, also known as Thompson Seedless, with at least 3,600 km2 (880,000 acres) dedicated to it. The second most common variety is Airén. Other popular varieties include Cabernet Sauvignon, Sauvignon blanc, Cabernet Franc, Merlot, Grenache, Tempranillo, Riesling, and Chardonnay. [18]

Top producers of grapes[ citation needed ]for wine making, by area planted
CountryArea (km2)
Flag of Spain.svg Spain11,750
Flag of France.svg France8,640
Flag of Italy.svg Italy8,270
Flag of Turkey.svg Turkey8,120
Flag of the United States.svg United States4,150
Flag of Iran.svg Iran2,860
Flag of Romania.svg Romania2,480
Flag of Portugal.svg Portugal2,160
Flag of Argentina.svg Argentina2,080
Flag of Chile.svg Chile1,840
Flag of Australia (converted).svg Australia1,642
Flag of Armenia.svg Armenia1,459
Top grape producing countries by years
(in metric tons)
RankCountry20092010201120122020
1Flag of the People's Republic of China.svg China8,038,7038,651,8319,174,2809,600,000 F14,769,088
2Flag of the United States.svg United States6,629,1986,777,7316,756,4496,661,8208,222,360
3Flag of Italy.svg Italy8,242,5007,787,8007,115,5005,819,0106,817,770
4Flag of France.svg France6,101,5255,794,4336,588,9045,338,5125,884,230
5Flag of Spain.svg Spain5,535,3336,107,6175,809,3155,238,3005,388,679
6Flag of Turkey.svg Turkey4,264,7204,255,0004,296,3514,275,6594,208,908
7Flag of Chile.svg Chile2,600,0002,903,0003,149,3803,200,000 F3,125,000
8Flag of Argentina.svg Argentina2,181,5672,616,6132,750,0002,800,000 F2,772,561
9Flag of Iran.svg Iran2,305,0002,225,0002,240,0002,150,000 F2,055,746
10Flag of South Africa.svg South Africa1,748,5901,743,4961,683,9271,839,0302,028,185
World58,521,41058,292,10158,500,11867,067,12878,034,332

Table and wine grapes

Wine grapes on the vine Wine grapes03.jpg
Wine grapes on the vine

Commercially cultivated grapes can usually be classified as either table or wine grapes, based on their intended method of consumption: eaten raw (table grapes) or used to make wine (wine grapes). The sweetness of grapes depends on when they are harvested, as they do not continue to ripen once picked. [21] While almost all of them belong to the same species, Vitis vinifera , table and wine grapes have significant differences, brought about through selective breeding. Table grape cultivars tend to have large, seedless fruit (see below) with relatively thin skin. Wine grapes are smaller, usually seeded, and have relatively thick skins (a desirable characteristic in winemaking, since much of the aroma in wine comes from the skin). Wine grapes also tend to be very sweet: they are harvested at the time when their juice is approximately 24% sugar by weight. By comparison, commercially produced "100% grape juice", made from table grapes, is usually around 15% sugar by weight. [22]

Seedless grapes

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 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 being cultivars of Vitis vinifera . There are currently more than a dozen varieties of seedless grapes. Several, such as Einset Seedless, Benjamin Gunnels's Prime seedless grapes, Reliance, and Venus, have been specifically cultivated for hardiness and quality in the relatively cold climates of northeastern United States and southern Ontario. [23]

An offset to the improved eating quality of seedlessness is the loss of potential health benefits provided by the enriched phytochemical content of grape seeds (see Health claims, below). [24] [25]

Uses

Culinary

Grapes are eaten raw, dried (as raisins, currants and sultanas), or cooked. Also, depending on grape cultivar, grapes are used in winemaking. Grapes can be processed into a multitude of products such as jams, juices, vinegars and oils. Commercially cultivated grapes are classified as either table or wine grapes. These categories are based on their intended method of consumption: grapes that are eaten raw (table grapes), or grapes that are used to make wine (wine grapes). Table grape cultivars normally have large, seedless fruit and thin skins. Wine grapes are smaller (in comparison to table grapes), usually contains seeds, and have thicker skins (a desirable characteristic in making wine). Most of the aroma in wine is from the skin. Wine grapes tend to have a high sugar content. They are harvested at peak sugar levels (approximately 24% sugar by weight.) In comparison, commercially produced "100% grape juice" made from table grapes are normally around 15% sugar by weight. [22]

Raisins, currants and sultanas

Raisins Raisins 01.jpg
Raisins

In most of Europe and North America, dried grapes are referred to as "raisins" or the local equivalent. In the UK, three different varieties are recognized, forcing the EU to use the term "dried vine fruit" in official documents.

A raisin is any dried grape. While raisin is a French loanword, the word in French refers to the fresh fruit; grappe (from which the English grape is derived) refers to the bunch (as in une grappe de raisins). A raisin in French is called raisin sec ("dry grape").

A currant is a dried Zante Black Corinth grape, the name being a corruption of the French raisin de Corinthe (Corinth grape). The names of the black and red currant, now more usually blackcurrant and redcurrant, two berries unrelated to grapes, are derived from this use. Some other fruits of similar appearance are also so named, for example, Australian currant, native currant, Indian currant. [26]

A sultana was originally a raisin made from Sultana grapes of Turkish origin (known as Thompson Seedless in the United States), but the word is now applied to raisins made from either white grapes or red grapes that are bleached to resemble the traditional sultana.

Juice

Grape juice Grape Juice.jpg
Grape juice

Grape juice is obtained from crushing and blending grapes into a liquid. The juice is often sold in stores or fermented and made into wine, brandy, or vinegar. Grape juice that has been pasteurized, removing any naturally occurring yeast, will not ferment if kept sterile, and thus contains no alcohol. In the wine industry, grape juice that contains 7–23% of pulp, skins, stems and seeds is often referred to as "must". In North America, the most common grape juice is purple and made from Concord grapes, while white grape juice is commonly made from Niagara grapes, both of which are varieties of native American grapes, a different species from European wine grapes. In California, Sultana (known there as Thompson Seedless) grapes are sometimes diverted from the raisin or table market to produce white juice. [27]

Vinegars

Husrum, also known as verjuice , is a type of vinegar made from sour grapes in the Middle East. It is produced by crushing unripened grapes, collecting and salting the juice, simmering it to remove foam, and then storing it with a layer of olive oil to prevent contamination and oxidation. It is then used as an acidic ingredient in salads and stuffed vegetables. [28] Unripened husrum grapes sent from Ashkelon to Egypt are mentioned in a 12th-century document found in the Cairo Geniza. [29] In Iran, a sour grape vinegar is used for making Shirazi salad.

Pomace and phytochemicals

Winemaking from red and white grape flesh and skins produces substantial quantities of organic residues, collectively called pomace (also "marc"), which includes crushed skins, seeds, stems, and leaves generally used as compost. [30] Grape pomace some 10-30% of the total mass of grapes crushed contains various phytochemicals, such as unfermented sugars, alcohol, polyphenols, tannins, anthocyanins, and numerous other compounds, some of which are harvested and extracted for commercial applications (a process sometimes called "valorization" of the pomace). [30] [31]

Skin

Grape cross-section Wine grape diagram en.svg
Grape cross-section

Anthocyanins tend to be the main polyphenolics in purple grapes, whereas flavan-3-ols (i.e. catechins) are the more abundant class of polyphenols in white varieties. [32] Total phenolic content is higher in purple varieties due almost entirely to anthocyanin density in purple grape skin compared to absence of anthocyanins in white grape skin. [32] Phenolic content of grape skin varies with cultivar, soil composition, climate, geographic origin, and cultivation practices or exposure to diseases, such as fungal infections.

Muscadine grapes contain a relatively high phenolic content among dark grapes. [33] [34] In muscadine skins, ellagic acid, myricetin, quercetin, kaempferol, and trans-resveratrol are major phenolics. [35]

The flavonols syringetin, syringetin 3-O-galactoside, laricitrin and laricitrin 3-O-galactoside are also found in purple grape but absent in white grape. [36]

Seeds

Muscadine grape seeds contain about twice the total polyphenol content of skins. [34] Grape seed oil from crushed seeds is used in cosmeceuticals and skincare products. Grape seed oil, including tocopherols (vitamin E) and high contents of phytosterols and polyunsaturated fatty acids such as linoleic acid, oleic acid, and alpha-linolenic acid. [37] [38] [39]

Resveratrol

Resveratrol, a stilbene compound, is found in widely varying amounts among grape varieties, primarily in their skins and seeds. [40] Muscadine grapes have about one hundred times higher concentration of stilbenes than pulp. Fresh grape skin contains about 50 to 100 micrograms of resveratrol per gram. [41]

Health claims

French paradox

Comparing diets among Western countries, researchers have discovered that, although French people tend to eat higher levels of animal fat, the incidence of heart disease remains low in France. This phenomenon has been termed the French paradox and is thought to occur due to the protective benefits of regularly consuming red wine, among other dietary practices. Alcohol consumption in moderation may be cardioprotective by its minor anticoagulant effect and vasodilation. [42]

Using grape leaves in cuisine (Dolma) Armenian dolma.jpeg
Using grape leaves in cuisine (Dolma)

Although adoption of wine consumption is generally not recommended by health authorities, [43] some research indicates moderate consumption, such as one glass of red wine a day for women and two for men, may confer health benefits. [44] [45] [46] Alcohol itself may have protective effects on the cardiovascular system. [47]

Grape and raisin toxicity in dogs

The consumption of grapes and raisins presents a potential health threat to dogs. Their toxicity to dogs can cause the animal to develop acute kidney failure (the sudden development of kidney failure) with anuria (a lack of urine production) and may be fatal. [48]

In religion

Christians have traditionally used wine during worship services as a means of remembering the blood of Jesus Christ which was shed for the remission of sins. Christians who oppose the partaking of alcoholic beverages sometimes use grape juice as the "cup" or "wine" in the Lord's Supper. [49]

The Catholic Church continues to use wine in the celebration of the Eucharist because it is part of the tradition passed down through the ages starting with Jesus Christ at the Last Supper, where Catholics believe the consecrated bread and wine become the body and blood of Jesus Christ, a dogma known as transubstantiation. [50] Wine is used (not grape juice) both due to its strong Scriptural roots, and also to follow the tradition set by the early Christian Church. [51] The Code of Canon Law of the Catholic Church (1983), Canon 924 says that the wine used must be natural, made from grapes of the vine, and not corrupt. [52]

See also

Related Research Articles

<span class="mw-page-title-main">Berry</span> In the culinary sense, small edible fruit

A berry is a small, pulpy, and often edible fruit. Typically, berries are juicy, rounded, brightly colored, sweet, sour or tart, and do not have a stone or pit, although many pips or seeds may be present. Common examples of berries in the culinary sense are strawberries, raspberries, blueberries, blackberries, white currants, blackcurrants, and redcurrants. In Britain, soft fruit is a horticultural term for such fruits.

<span class="mw-page-title-main">Raisin</span> Dark-colored dried large grape

A raisin is a dried grape. Raisins are produced in many regions of the world and may be eaten raw or used in cooking, baking, and brewing. In the United Kingdom, Ireland, New Zealand, Australia and South Africa, the word raisin is reserved for the dark-colored dried large grape, with sultana being a golden-colored dried grape, and currant being a dried small Black Corinth seedless grape.

<span class="mw-page-title-main">Zante currant</span> Variety of grape

Zante currants, Corinth raisins, Corinthian raisins or outside the United States simply currants, are raisins of the small, sweet, seedless grape cultivar Black Corinth. The name comes from the Anglo-French phrase "raisins de Corinthe" and the Ionian island of Zakynthos (Zante), which was once the major producer and exporter. It is not related to black, red or white currants, which are berries of shrubs in the genus Ribes and not usually prepared in dried form.

<span class="mw-page-title-main">Concord grape</span> Dark blue or purple grape cultivar

The Concord grape is a cultivar derived from the grape species Vitis labrusca that are used as table grapes, wine grapes and juice grapes. They are often used to make grape jelly, grape juice, grape pies, grape-flavored soft drinks, and candy. The grape is sometimes used to make wine, particularly sacramental and kosher wine. Traditionally, most commercially produced Concord wines have been finished sweet, but dry versions are possible if adequate fruit ripeness is achieved. The grape is named after the town in Massachusetts where it was developed. The grapes are cultivated in many different parts of the world now.

<i>Vitis vinifera</i> Species of flowering plant in the grape vine family Vitaceae

Vitis vinifera, the common grape vine, is a species of flowering plant, native to the Mediterranean region, Central Europe, and southwestern Asia, from Morocco and Portugal north to southern Germany and east to northern Iran. As of 2012, there were between 5,000 and 10,000 varieties of Vitis vinifera grapes though only a few are of commercial significance for wine and table grape production.

<i>Vitis rotundifolia</i> Variety of grape

Vitis rotundifolia, or muscadine, is a grapevine species native to the southeastern and south-central United States. The growth range extends from Florida to New Jersey coast, and west to eastern Texas and Oklahoma. It has been extensively cultivated since the 16th century. The plants are well-adapted to their native warm and humid climate; they need fewer chilling hours than better known varieties, and thrive in summer heat.

<span class="mw-page-title-main">Sultana (grape)</span> "chartreuse" (pale green), oval seedless grape variety

The sultana is a "white", oval seedless grape variety also called the sultanina, Thompson Seedless, Lady de Coverly (England), and oval-fruited Kishmish. It is also known as grape of İzmir or Manisa in Turkey since this variety has been extensively grown in the region around those cities. It is assumed to originate from Asia Minor, which later became part of the Ottoman Empire.

<span class="mw-page-title-main">Norton (grape)</span> Variety of grape

Norton is grown in the Midwestern United States, the Mid-Atlantic States, and northeastern Georgia. DNA data are consistent with 'Norton' being a hybrid with ancestry including V. aestivalis and V. vinifera.

<span class="mw-page-title-main">Grape juice</span> Drink made from grapes

Grape juice is obtained from crushing and blending grapes into a liquid. In the wine industry, grape juice that contains 7–23 percent of pulp, skins, stems and seeds is often referred to as must. The sugars in grape juice allow it to be used as a sweetener, and fermented and made into wine, brandy, or vinegar.

<span class="mw-page-title-main">Health effects of wine</span> Potential health effects resulting from drinking wine

The health effects of wine are mainly determined by its active ingredient – alcohol. Preliminary studies found that drinking small quantities of wine, particularly of red wine, may be associated with a decreased risk of cardiovascular diseases, cognitive decline, stroke, diabetes mellitus, metabolic syndrome, and early death. Other studies found no such effects.

<span class="mw-page-title-main">Outline of wine</span> Alcoholic drink made by fermentation of grapes or other fruits and foods

The following outline is provided as an overview of and topical guide to wine:

Proanthocyanidins are a class of polyphenols found in many plants, such as cranberry, blueberry, and grape seeds. Chemically, they are oligomeric flavonoids. Many are oligomers of catechin and epicatechin and their gallic acid esters. More complex polyphenols, having the same polymeric building block, form the group of condensed tannins.

<span class="mw-page-title-main">Isabella (grape)</span> Variety of grape

The Isabella grape is a cultivar derived from the grape species Vitis labrusca or 'fox grape,' which is used for table, juice and wine production.

<span class="mw-page-title-main">Anthocyanin</span> Class of plant-based pigments

Anthocyanins, also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig Clamor Marquart named a chemical compound that gives flowers a blue color, Anthokyan, in his treatise "Die Farben der Blüthen". Food plants rich in anthocyanins include the blueberry, raspberry, black rice, and black soybean, among many others that are red, blue, purple, or black. Some of the colors of autumn leaves are derived from anthocyanins.

<span class="mw-page-title-main">Phenolic content in wine</span> Wine chemistry

Phenolic compounds—natural phenol and polyphenols—occur naturally in wine. These include a large group of several hundred chemical compounds that affect the taste, color and mouthfeel of wine. These compounds include phenolic acids, stilbenoids, flavonols, dihydroflavonols, anthocyanins, flavanol monomers (catechins) and flavanol polymers (proanthocyanidins). This large group of natural phenols can be broadly separated into two categories, flavonoids and non-flavonoids. Flavonoids include the anthocyanins and tannins which contribute to the color and mouthfeel of the wine. The non-flavonoids include the stilbenoids such as resveratrol and phenolic acids such as benzoic, caffeic and cinnamic acids.

<span class="mw-page-title-main">Wine color</span> Wine characteristic

The color of wine is one of the most easily recognizable characteristics of wines. Color is also an element in wine tasting since heavy wines generally have a deeper color. The accessory traditionally used to judge the wine color was the tastevin, a shallow cup allowing one to see the color of the liquid in the dim light of a cellar. The color is an element in the classification of wines.

ε-Viniferin Chemical compound

ε-Viniferin is a naturally occurring phenol, belonging to the stilbenoids family. It is a resveratrol dimer.

<span class="mw-page-title-main">Thomcord</span> Grape varietal

Thomcord is a seedless table grape variety and a hybrid of the popular Thompson Seedless or Sultanina grape and Concord grape. Thomcord was developed in 1983 by Californian grape breeders working for the Agricultural Research Service (ARS), an agency of the United States Department of Agriculture (USDA), as part of a test to better understand a new seedless grape breeding procedure.

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Further reading