Determination of Total Anthocyanin and Proanthocyanidin Contents in Black Soybeans (Glycine max (L.) Merr.) Cultivated in Japan

Oki, Tomoyuki; Sato-Furukawa, Maki; Yamashita, Naho; Shiratsuchi, Hideki; Goto, Kazuhisa; Okuno, Sachiko; Suda, Ikuo

doi:10.3136/nskkk.60.595

Cited by 2 publications

(1 citation statement)

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“…It has been reported that the anthocyanin contents in black soybeans vary according to cultivar and cultivation area in Japan (Oki et al, 2013); therefore, when compared to black soybeans, black cowpeas appear to have higher and/or comparable anthocyanin contents. On the other hand, the anthocyanin contents in red cowpeas were low, similar to red azuki beans.…”

Section: Discussionmentioning

confidence: 96%

Comparison of Anthocyanins, Proanthocyanidin Oligomers and Antioxidant Capacity between Cowpea and Grain Legumes with Colored Seed Coat

Orita

Musou-Yahada

Shoji³

et al. 2019

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The aim of this study was to investigate the composition and contents of anthocyanins and proanthocyanidins, and the antioxidant capacity of black and red cowpeas grown in Japan, with comparison to grain legumes (black kidney beans, black soybeans, and azuki beans) commonly consumed in Japan. This study revealed that black cowpeas contained seven anthocyanins, the 3-O-galactosides and 3-O-glucosides of cyanidin and delphinidin, and the 3-O-glucosides of malvidin, peonidin, and petunidin, at higher levels than other grain legumes. In addition, black and red cowpeas were rich in proanthocyanidin oligomers (monomers to hexamers) when compared with other grain legumes. Among these, black and red cowpeas showed potent hydrophilic oxygen radical absorbance capacity (H-ORAC), reaching 540.6 and 367.5 μmol-Trolox equivalents/g-dry matter, respectively. The contributions of anthocyanins and proanthocyanidin oligomers to H-ORAC values were 45.8 % and 17.5 % in black and red cowpeas, respectively.

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Section: Discussionmentioning

confidence: 96%