Junguang Li, Qisen Xiang, Xiufang Liu, Tian Ding, Xiangsheng Zhang, Yafei Zhai, Yanhong Bai
Food chemistry 2017 Oct 01Soybean trypsin inhibitor (STI) is considered as one of the most important anti-nutritional factors in soybeans. The objective of this study was to investigate the impacts and underling mechanisms of dielectric-barrier discharge (DBD) plasma on STI activities. The results shown that DBD plasma treatment significantly induced the inactivation of STI in soymilk and Kunitz-type trypsin inhibitor from soybean (SKTI) in a model system. After exposure to DBD plasma at 51.4W for 21min, the STI activities of soymilk were reduced by 86.1%. Affter being treated by DBD plasma, the intrinsic fluorescence and surface hydrophobicity of SKTI were significantly decreased, while the sulfhydryl contents were increased. It is assumed that DBD plasma-induced conformational changes and oxidative modification might contribute to the inactivation of SKTI. In summary, DBD plasma technology is a potential alternative to heat treatment for the inactivation of anti-nutritional substances in food legumes. Copyright © 2017 Elsevier Ltd. All rights reserved.
Junguang Li, Qisen Xiang, Xiufang Liu, Tian Ding, Xiangsheng Zhang, Yafei Zhai, Yanhong Bai. Inactivation of soybean trypsin inhibitor by dielectric-barrier discharge (DBD) plasma. Food chemistry. 2017 Oct 01;232:515-522
PMID: 28490106
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