Rice accounts for 21, 14 and 2% of global energy, protein and fat supply, respectively. There are thousands of different rice
varieties; some have been in the diet for centuries, while others are new hybrids promoted for qualities such as high yield and
drought and disease resistance. Little is known about the nutrient composition of many of the world’s rice varieties. This paper
investigates the literature on nutrient composition of rice varieties. Standardization of data to 100 g samples of unpolished rice (dry
matter basis), showed intra-varietal ranges of; 9 g protein, 5.65 mg iron, 3.34 mg zinc, 1.6 mg thiamin, 0.392 mg riboflavin and 7.2
mg niacin. Currently, several research institutions are working toward improving the nutrient content of rice through greater utilization
of rice genetic resources. The results section discusses in detail the magnitude of intra-varietal differences and highlights
practical applications of genetic diversity in rice.
# 2002 Elsevier Science Ltd. All rights reserved.
Rice accounts for 21, 14 and 2% of global energy, protein and fat supply, respectively. There are thousands of different ricevarieties; some have been in the diet for centuries, while others are new hybrids promoted for qualities such as high yield anddrought and disease resistance. Little is known about the nutrient composition of many of the world’s rice varieties. This paperinvestigates the literature on nutrient composition of rice varieties. Standardization of data to 100 g samples of unpolished rice (drymatter basis), showed intra-varietal ranges of; 9 g protein, 5.65 mg iron, 3.34 mg zinc, 1.6 mg thiamin, 0.392 mg riboflavin and 7.2mg niacin. Currently, several research institutions are working toward improving the nutrient content of rice through greater utilizationof rice genetic resources. The results section discusses in detail the magnitude of intra-varietal differences and highlightspractical applications of genetic diversity in rice.# 2002 Elsevier Science Ltd. All rights reserved.
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