期刊
FOOD CHEMISTRY
卷 269, 期 -, 页码 404-412出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.07.028
关键词
Optimization; Sonication; Hydrothermal processing; Soybean enzymes; Flavonoids; Texture; Moisture
资金
- Coordination of Improvement of Higher Education - Ministry of Education of Brazil CAPES
- CAPES
- CNPq (National Council for Scientific and Technological Development - Brazil)
- CNPq [305397/2015-0]
Ultrasound may convert conjugated isoflavones into their corresponding aglycones, the best form for absorption in the human body. However, ultrasound may also influence the activity of endogenous beta-glucosidase. Therefore, the present work evaluated the effects of soybean ultrasound pre-treatment by applying the Box-Behnken design prior to soaking, a step that is important for industries to prepare certain soy products. Furthermore, a multi-response optimisation is provided. The best conditions for soybean ultrasound pre-treatment were established as temperature, X-1=55 degrees C; exposure time, X-2=5 min and ultrasound intensity, X-3=19.5 W cm(-2). Under these conditions, soybeans with higher contents of aglycones were obtained and beta-glucosidase activity was kept as high as possible. A second experiment was conducted and confirmed that ultrasound pre-treatment results in a lower soaking time (2 h) to achieve the highest moisture content, lower hardness as well as increased content of aglycones.
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