Abstract
Anti-nutritional studies on cowpea (Vigna ungiculata L.) seeds as whole cowpea flour (WCF), dehulled cowpea flour (DCF), dehulled defatted cowpea flour (DDCF) and protein isolates obtained from DDCF by isoelectric (CPIA) and micellization (CPIB) precipitation. The protein content of WCF and DDCF were 22.3% and 26.75% respectively, while CPIA and CPIB showed 75% and 76% respectively. The abundant minerals in WCF and DCF were calcium (32.38 - 33.61 mg/100 g); potassium (29.25 - 24.99 mg/100 g); and sodium (1.76 - 1.00 mg/100 g). The least abundant minerals were iron (0.004 - 0.013 mg/100 g); copper (0.04 - 0.25 mg/100 g); manganese (0.18 - 0.30 mg/100 g) and zinc (0.26 - 1.22 mg/100 g); respectively. Trypsin inhibitor activity for WCF, CPIA and CPIB was found 16,640 TIU/g, 4293 TIU/g and 4290 TIU/g respectively. Condensed tannins in RCF and DDCF were found 0.003% and 0.004% respectively while phytic acid content 0.8% and 1.17% respectively, no phytic acid and tannins were observed in protein isolates. Cowpea flour was also similar to other edible grain legumes in content of anti-nutritional factors; appropriate processing methods improved cowpea nutritive value and significantly reduced the levels of anti-nutritional factors.
Highlights
Legume seeds are important source of protein, supplement cereals for protein, and for minerals andHow to cite this paper: Khalid, I.I. and Elhardallou, S.B. (2016) Factors That Compromise the Nutritional Value of Cowpea Fluor and Its Protein Isolates
The aim of this study is to study the effect of de-hulling on the possible reduction or inactivation of some anti-nutrient factors in raw cowpea flour and protein isolates
Cooking resulted in (60% and 50%) reduction in phytic acid content of lentils and butter beans respectively, while for broad beans only 11%
Summary
Legume seeds are important source of protein, supplement cereals for protein, and for minerals andHow to cite this paper: Khalid, I.I. and Elhardallou, S.B. (2016) Factors That Compromise the Nutritional Value of Cowpea Fluor and Its Protein Isolates. Legume seeds are important source of protein, supplement cereals for protein, and for minerals and. How to cite this paper: Khalid, I.I. and Elhardallou, S.B. (2016) Factors That Compromise the Nutritional Value of Cowpea Fluor and Its Protein Isolates. B. Elharadallou vitamins of B complex; the Legumes provide additional nicotinic acid and minerals. Legumes together with cereals are the main plant source of proteins in human diet. They are rich in dietary fibre and carbohydrates [1]
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