Hydrothermal treatments in the development of isoflavone aglycones in soybean (Glycine max (L.) Merrill) grains

Brazilian Archives of Biology and Technology

Mercedes C. Carrão-panizzi²  Silvana Pedroso De Goés-favoni¹  Akio Kikuchi¹ 

[1] ,Embrapa-Labex National Center for Agricultural Utilization Research

关键词: Soybean;    isoflavones;    glycosides;    aglycones;    temperature;   

DOI  :  10.1590/S1516-89132004000200010

来源: SciELO

【 摘 要 】

Studies were carried out to enhance the development of isoflavone aglycones in soybean. Grains of two soybean cultivars, BR 36 and IAS 5, 115 and 278 mg/100g of total isoflavone, respectively, were treated hydrothermalyl at 45, 60 and 85° C for 5, 30 and 60 minutes. Pre-treatments of grains at 60° C for 60 minutes allowed a considerable increase of the isoflavone aglycones. Non-treated grains of BR 36 and IAS 5 showed 1.2 mg/100g of genistein, after hydrothermal treatments,which increased to 12 and 53 mg/100g, in each variety, respectively. At higher temperature (85 ° C) there was a decrease of the aglycones due to inactivation of beta-glycosidases. Malonyl compounds were also reduced at higher temperatures. In processing functional soybean foods, hydrothermal treatments of the soybean grains, as well as high isoflavone content soybean cultivars will enhance development of aglycone forms.

【 授权许可】

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