A grape is the non-climacteric fruit, botanically a true berry, that grows on the perennial and deciduous woody vines of the genus Vitis. Grapes can be eaten raw or used for making jam, juice, jelly, vinegar, wine, grape seed extracts, raisins, and grape seed oil. Grapes are also used in some kinds of confectionery.
Grapes are one of those fruits available in abundant quantity across the world. Of the seven continents in the world, except for one continent – Antarctica – all the other six continents cultivate this delicious fruit. Grapes are the major source of ingredient for producing wine and more than 50% of 60 million tonnes of grapes grown across the world are fermented annually for producing wine.
Broadly, grapes are sub-divided into two general categories – one is European and the other is American. The European variety that encompasses most of the varieties of grapes, is typically used as table food and also for producing wine. On the other hand, the American variety of grapes, which have skins that slip off easily, are predominantly used for making juices, jellies and jams.
It has been found that the European type of grapes is the more nutritious of the two varieities. However, neither of the varieties ranks high on the nutritional scale in comparison with other fruits. A cup of European grapes provides about 20% of the Recommended Daily Allowance or RDA for Vitamin C, about four times more than found in the American varieties. All types of grapes, however, provide a fair amount of potassium and iron.
Grapes are one of the favorite fruits for many people because of its low calorie content and its sweet, juicy flavor. Yet another reason for eating grapes is that it offers innumerable health benefits. Anthocyanins found in red and blue grapes have been found to be effective in lowering the risk of heart diseases and cancer.
Grapes contain quercetin, a plant pigment that is found to be effective in regulating the levels of blood cholesterol and also reduce the action of platelets, blood cells that are instrumental in forming clots. The skin of grapes contains resveratrol, a phyto-chemical that is linked to reduction of heart disease as well as a lowered risk of cancer or stroke.
Grapes also contain ellagic acid, which is found to be effective in protecting the lungs against environmental toxins. If one were to reap the full benefits from grapes, it is advisable that they select the red and purple varieties that are found to have higher concentration of healthful compounds.
Partially dried grapes, called as raisins, are found to be a highly concentrated source of nutrients and calories. To get about 500 grams of raisins, as much as 2 kilograms of fresh grapes are required. A cup of raisins produced from the fresh grapes contain as much as 440 calories. In addition, the cup also provides about 3 grams of iron, 1,090 micrograms of potassium and 6 grams of fiber content.
Commercially grown grapes are usually sprayed with pesticides and are treated with sulfur dioxide to preserve their color and also extend their shelf life. As such, before eating grapes, one should ensure that the grapes are washed. People suffering from asthma disease should avoid consuming grapes due to the sulfur content, or else ensure that those grapes are not treated with sulfur.
Grapes grow in clusters of 6 to 300, and can be crimson, black, dark blue, yellow, green 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. 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.
Grapes are a form of berry. They are round or oval in shape with a variety of sizes, colors and tastes. Its sizes vary from as small as a pea to as big as a plum! Its skin ranges in colors, anything from white to black, with a semi-translucent flesh. Depending on the variety, there are grapes with seeds, and some seedless, tasting from sweet to sour.
Red grape juice or red wine has high concentration of a compound called resveratrol, which is not found in white wine, mainly because of how the wine is made. This compound has anti-aging, anti-cancer, anti-inflammation and anti-viral properties.
Grape seeds contain rich flavonoids that are powerful in fighting and protecting against many diseases. When juicing grapes, juice the seeds and all.
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