Nutritive Value per 100 g of grapes
Green grapes
Energy (Kcal) : 71
Calcium (mg) : 20
Phosphorus (mg) : 30
Iron (mg) : 0.5
Vitamin C (mg) : 1
Fibre (g) : 2.9
Blue grapes
Energy (Kcal) : 58
Calcium (mg) : 20
Phosphorus (mg) : 23
Iron (mg) : 0.5
Carotene (µg) : 3
Vitamin C (mg) : 1
Fibre (g) : 2.8
Grapes are rich in reducing sugars, they have sugars and acids in almost equal proportions. Fruit sugars increase upon ripening. Grape sugars are usually glucose or dextrose.
Grapes are unique among food items because they have large amounts of tartaric acid. Grapes have large amounts of pectin. So it is easy to make jams and marmalades out of them.
They are fairly good sources of calcium, phosphorus and iron. Traces of iodine and fluoride are found. Black grapes generally have higher amounts of vitamin C. They also have traces of vitamin A. The red or purple colouring matter in grapes is known as oenin.
(Reference : Fruits, NIN, ICMR)
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