ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Enzyme-assisted aqueous extraction process is a green oil extraction technology,which has advanced in recent years, may be a effective alternative technology to separate oil and protein from soybeans. It will be accompanied by cream, skim and residual fraction in the enzymeassisted aqueous extraction process．The main component in the skim is soy protein hydrolysates. Different types of proteases (Alcalase, Neutrase, Papain, Bromelain, Flavourzyme, Protamex and Trypsin) were used to hydrolyze the extruded soybean flour. Different kinds of protein hydrolysates were used as the research objects. The structure of soybean protein hydrolysates was characterized by degree of hydrolysis, SDS-polyacrylamide gel electrophoresis, amino acid composition analysis and Fourier transform infrared spectroscopy. Solubility, emulsion activity index and emulsion stability index characterized the functional of the soy protein hydrolysates. The bitterness value of the soy protein hydrolysates was obtained by sensory evaluation. The results indicated that when using Alcalase for enzymeassisted aqueous extraction, the highest oil extraction rate was 91.23% and the solubility of soybean protein hydrolyzate was 91.12%. However, the bitterness value of the hydrolyzate was increased greatly which was 4, the emulsion activity index and emulsion stability index were not good. When using Flavourzyme for enzymeassisted aqueous extraction treatment, the oil extraction was 87.73% and the solubility was 87.12%. However, the bitterness of the hydrolyzates was only 1.5, thus the sensory evaluation was the best. And the hydrolyzates had the best emulsion activity index and emulsion stability index.