The nutrient composition of some cowpea varieties

Abstract

Five varieties of cowpea (Vigna unguiculata) were analysed for their proximate composition, ·major mineral elements and carbohydrate fractions. Values for crude protein ranged from 25.80% to 28.95% while the ether extract, crude fibre, total ash and total carbohydrate had the following values: 1.83 • 237%, 3.06 - 4.48%,  5.80 - 7 .10% and 50.46 - 55.76% respectively. The average values for phosphorus, calcium, magnesium, potassium and sodium were 0.400%, 0.019%, 0.345%, 1.280% and 0.046% respectively. . Ethanol soluble sugars ranged between 4.78g/100g and 6.14/lOOg while starch contents varied between 32.97g/100g and 44.26g/100g. Raffinose and stachyose contents were 1.55 - 2.44g/100g and 3.33 - 4.35g/100g respectively.

Keywords: Nutrients, macro elements, oligosaccharides, cowpea varieties.