Nutritional ranking of 30 Brazilian genotypes of cowpeas including determination of antioxidant capacity and vitamins

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• 作者：Ana Fontenele Urano Carvalho^a ; ^{aurano@ufc.br} ; Nathanna Mateus de Sousa^b ; Davi Felipe Farias^b ; Lady Clarissa Brito da Rocha-Bezerra^b ; Renata Maria Pereira da Silva^a ; Mart&ocirc ; nio Ponte Viana^a ; Sandro Thomaz Gouveia^c ; Silvana Saker Sampaio^d ; Marcia Barbosa de Sousa^d ; Glauber Pacelli Gomes de Lima^b ; Selene Maia de Morais^e ; Caroline Costa Barros^e ; Francisco Rodrigues Freire Filho^f
• 关键词：Vigna unguiculata ; Cowpea ; Proteins ; Dietary fiber ; Vitamins ; Antioxidant capacity ; Conventional genetic breeding ; Unintentional effects ; Food composition ; Biodiversity
• 刊名：Journal of Food Composition and Analysis
• 出版年：2012
• 期刊代码：119_08891575
• 类别：abs
• 出版时间：May-June, 2012
• 卷：26
• 期：1-2
• 页码：81-88
• 文件大小：398 K

摘要

This study aimed to establish a nutritional ranking of 30 genotypes of cowpea (Vigna unguiculata L. Walp). The results showed the proximate composition varies among genotypes in protein (20-30%) and dietary fiber contents (20-35%), in protease inhibitors (2-4 UI/渭g protein), lectin (40,000-640,000 UH/kg meal) and essential amino acid levels, in vitro protein digestibility (30-40%) and in the apparent concentration of expressed proteins. The antioxidant capacity varied from EC₅₀ of 9.54-38.7 mg seed extract/mL DPPH and the highest values detected for alpha- and delta-tocopherol were 0.38 mg/g and 1.88 mg/g, respectively. The analysis of a nutritional quality index based on the weighted average content of total protein, dietary fiber, iron, zinc, protease inhibitors and lectins allowed ranking genotypes. In descending order the 5 best genotypes were: BRS-Cauam茅 > BRS-Tumucumaque > Canapuzinho > BRS-Potengi > BRS-Urubuquara.