The optimized conditions of solubility:hydrolyzing time was 30minutes,addition of neutral proteinase was 0.005%,addition of MTG was 0.3%,reaction time was 1.0 hour.

• 获得最佳溶解性的反应条件为:添加中性蛋白酶0.；005%25；水解30min; 添加MTG0