玉米蛋白粉的水解条件优化研究(英文)

Optimization of Hydrolysis Conditions for Corn Gluten Meal

[目的]探讨玉米蛋白粉水解的最适酶及酶的最佳水解条件,为利用其制备生物活性肽奠定基础。[方法]分别用9种酶对玉米蛋白粉进行水解,采用甲醛滴定法测定水解度,并利用正交试验确定玉米蛋白粉双酶水解的最佳水解条件。[结果]玉米蛋白粉最佳预处理条件为121℃热处理30min。对该预处理后的玉米蛋白粉进行2709碱性蛋白酶和风味蛋白酶双酶水解,在加酶量为4%、水解时间为4h、pH7.0、温度45℃条件下水解度能够达到32.4%。[结论]该结果为制备高F值寡肽、降压肽等生物活性肽的研究奠定了基础,进一步完善了玉米深加工产业链。

[Objective] To investigate the optimal enzyme for the hydrolysis of corn gluten meal and the optimal hydrolysis conditions for the enzyme. [Method] Nine kinds of enzymes were used to hydrolyze the corn gluten meal, using the formaldehyde titration method for the determination of hydrolysis degree, and orthogonal test was used to determine the optimal hydrolysis conditions for double enzymes hydrol- ysis of corn gluten meal. [Result] The optimal pretreatment condition for corn gluten meal is heating at 121 ~C for 30 min. The double enzyme hydrolysis for the pro- treated corn gluten meal using 2709 alkaline protease and flavourzyme showed that the degree of hydrolysis could reach 32.4% with enzyme addition amount of 4%, hy- drolysis time of 4 h at 45℃ and pH=7.0. [Conclusion] This study laid the foundation for the study on the preparation of bioactive peptides such as oligopeptide with high F value and antihypertensive peptides, further improving the corn intensive process- ing industrial chain.