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酶法有限水解对大豆分离蛋白乳化性能的影响
Effect of Enzymatic Limited Hydrolysis on Emulsifying Properties of Soy Protein Isolate
【摘要】 以蛋白酶Alcalase作用于大豆分离蛋白 ,分析了有限水解作用对产物乳化性能的影响。在实验条件下 ,当水解度 <6.0时 ,水解产物的乳化性能随其溶解性的增加而改善。在广泛pH范围内 ,乳化能力、乳化活性及等电点附近的酸凝性均比未处理前有明显提高。在pH >5.5时 ,乳化稳定性比对比样品降低幅度约高 2 .5~ 5.0倍 ;而在pH≤ 5.5时 ,则无明显改变。
【Abstract】 The hydrolysate produced with proteinase Alcalase gave improved emulsifying properties along with its solubility increased,provided that the degree of hydrolysis,x,was below 6.0.The emulsification stability of the hydrolysate decreased by 2.5~5.0 times than the control at pH>5.5.This implied that the transformed hydrolysate was more suitable for emulsifying use than unmodified ones.
【关键词】 大豆分离蛋白(SPI);
蛋白酶;
有限水解;
乳化性能;
酸凝性;
【Key words】 soy protein isolate (SPI); alcalase; limited hydrolysis; emulsifying properties; acid coagulation;
【Key words】 soy protein isolate (SPI); alcalase; limited hydrolysis; emulsifying properties; acid coagulation;
- 【文献出处】 中国粮油学报 ,JOURNAL OF THE CHINESE CEREALS AND OILS ASSOCIATION , 编辑部邮箱 ,2000年01期
- 【分类号】TS210.1
- 【被引频次】68
- 【下载频次】298