Nutritional Quality of Fruits, Nuts, and Vegetables and their Importance in Human Health

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Fruits, nuts, and vegetables play a significant role in human nutrition, especially as sources of vitamins [C (ascorbic acid), A, thiamine (B1), niacin (B3), pyridoxine (B6), folacin (also known as folic acid or folate) (B9), E], minerals, and dietary fiber (Craig and Beck, 1999; Quebedeaux and Bliss, 1988; Quebedeaux and Eisa, 1990; Wargovich, 2000). Their contribution as a group is estimated at 91% of vitamin C, 48% of vitamin A, 30% of folacin, 27% of vitamin B6, 17% of thiamine, and 15% of niacin in the U.S. diet. Fruits and vegetables also supply 16% of magnesium, 19% of iron, and 9% of the calories.

Authors: 
Adel A. Kader
Authors: 
Penelope Perkins-Veazie
Authors: 
Gene E. Lester
Publisher: 
USDA, ARS
Year: 
2004