Effects of moisture and temperature during grain storage on the functional properties and isoflavone profile of soy protein concentrate

被引：31

作者：

Ziegler, Valmor ^{[1
]}

Ferreira, Cristiano Dietrich ^{[1
]}

Hoffmann, Jessica Fernanda ^{[1
]}

de Oliveira, Mauricio ^{[1
]}

Elias, Moacir Cardoso ^{[1
]}

机构：

[1] Univ Fed Pelotas, Dept Ciencia & Tecnol Agroind, BR-96010900 Pelotas, RS, Brazil

来源：

FOOD CHEMISTRY | 2018年 / 242卷

关键词：

Soybean; Storage; Protein concentrate; Functional properties; Isoflavones; SOYBEANS; GENOTYPE; QUALITY;

D O I：

10.1016/j.foodchem.2017.09.034

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The objective of this study was evaluate the effects of moisture and temperature during grain storage on the functional properties and isoflavone profile of soy protein concentrate. The protein concentrate was extracted from soybeans on the first day of storage and after 12 months of storage, at 12 and 15% moisture and at temperatures of 11, 18, 25, and 32 degrees C. The protein concentrate obtained from grains stored at 32 degrees C showed decreased extraction yield (51.6% with 15% of moisture) and protein solubility (24.8% with 15% of moisture) with increased emulsifying capacity (52.2% with 12% of moisture) and foam formation, compared with sample obtained at the start of the storage period. The isoflavone profile showed a decrease in the concentrations of glycosylated, malonyl, and acetyl isoflavones and a corresponding increase in the concentrations of aglycone isoflavones, with the magnitude of these changes increasing with increasing storage temperature and moisture content.

引用

页码：37 / 44

页数：8

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