Effect of cooking on the bioaccessibility of essential elements in different varieties of beans (Phaseolus vulgaris L.)

Author(s)

de Oliveira, Aline Pereira ^[1] ; Oliveira Mateo, Bianca dos Santos ^[1] ; Fioroto, Alexandre Minami ^[2] ; de Oliveira, Pedro Vitoriano ^[2] ; Naozuka, Juliana ^[1]

Affiliation

^[1] Univ Fed Sao Paulo, Dept Quim, 275 Prof Artur Riedel St, BR-09972270 Diadema, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim, CP 26077, BR-05513970 Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: Journal of Food Composition and Analysis; v. 67, p. 135-140, APR 2018.
• Web of Science Citations: 5

Abstract

The chemical composition of beans (Phaseolus vulgaris L.) provides several health benefits to humans. However, cooking beans before consumption is necessary to reduce the effect of certain toxic and anti-nutritional substances and to increase protein digestibility. However, heat treatment of beans may alter the chemical composition and nutrient bioaccessibility. In this study, the effect of cooking on elemental bioaccessibility in seven varieties of Phaseolus beans (common, black, fradinho, rajado, bolinha, jalo, and rosinha) were evaluated. In vitro gastrointestinal digestion of raw and cooked beans was performed to evaluate the bioaccessibility of calcium, copper, iron, sulfur, and zinc, combined with elemental determination using inductively coupled plasma optical emission spectrometry. The gastrointestinal digestion of raw and cooked grains showed that the cooking decreased the percentage of soluble iron in the fradinho (29%), rajado (27%), bolinha (20%), and rosinha (7%) varieties. The percentages of elemental bioaccessibility for raw or cooked black beans showed that sulfur (93%, raw and cooked) and copper (88% for raw and 89% for cooked) were the most bioaccessible essential elements; in contrast, calcium (41%) was the least accessible element in cooked grain. (AU)

• FAPESP's process: 15/15510-0 - Studies of enrichment, chemical speciation and bioacessibility of essential elements in cultive of sprouts of azuki beans (Vigna angularis)
• Grantee: Juliana Naozuka
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/01128-6 - Chemical speciation of Fe e Se in sprouts of azuki beans: evaluation of enrichment process
• Grantee: Aline Pereira de Oliveira
• Support Opportunities: Scholarships in Brazil - Master