期刊论文

中文

中国油脂

1003-7969

2011

36

6

32-35

本校为第一机构

以脱脂紫苏粕为原料，采用碱溶酸沉法制备紫苏分离蛋白。研究了紫苏分离蛋白制备工艺条件，同时测定了产品的功能性质。通过单因素实验和正交实验得出紫苏分离蛋白制备的最佳工艺条件为:碱溶温度55℃，料液比1:10，碱溶pH 10，碱溶时间60 min／次(2次)，酸沉pH 4．4。在此工艺条件下紫苏分离蛋白产品得率为24．5％，产品蛋白质含量为91．52％(N×6．25，干基)。该产品的氮溶解指数为54．7％，持水性为3．57 g／g，吸油性为1．67 mL／g，乳化性为42％，乳化稳定性为95．24％。

Perilla protein isolates was prepared from defatted perilla meal through alkali - extraction and acid - precipitation. The process conditions and functional properties of perilla protein isolates were studied, and the optimum process conditions were obtained by single factor and orthogonal experiments as follows ： alkali - extraction temperature 55 ℃, solid - liquid ratio 1 ： 10, alkali - extraction pH 10, times 2 and once for 60 min, acid - precipitation pH 4.4. Under these conditions, the product yield was 24.5 %, and the protein content w...