细菌α-淀粉酶活性提升研究进展  

Research progress on enhancement of bacterialα-amylase activity

作　　者：白静 王君[1] 李末 宋立立[1] BAI Jing;WANG Jun;LI Mo;SONG Li-li

机构地区：[1]沧州师范学院生命科学系,河北沧州061001 [2]沧州职业技术学院农牧工程系,河北沧州061001

出　　处：《饲料研究》2023年第15期158-162,共5页Feed Research

基　　金：沧州市重点研发计划指导项目(项目编号:192107006);沧州师范学院校内科研基金项目青年项目(项目编号:xnjj11912)。

摘　　要：α-淀粉酶是一种内切酶,作用于淀粉分子的α-1,4糖苷键,降低淀粉黏度。作为动物饲料中常用的添加剂,α-淀粉酶能够弥补动物淀粉酶的不足,加速饲料中淀粉糖化过程,提高淀粉糖化效率和麦芽糖得率,提升饲料饲用价值。从生物活性和可获得性来看,微生物来源的α-淀粉酶最具应用潜力,而细菌α-淀粉酶具有更突出的优势。深入研究细菌α-淀粉酶可提高淀粉利用率,进而改善动物生长。文章综述了α-淀粉酶的来源、细菌α-淀粉酶的结构与催化机制、细菌α-淀粉酶活性提升等方面的研究进展,为细菌α-淀粉酶的进一步开发应用提供参考。α-amylase is an endonuclease that acts on theα-1,4-glucoside bond of starch molecules to reduce starch viscosity.As a commonly used additive in animal feed,α-amylase can make up for the deficiency of animal amylase,accelerate the starch saccharification process in feed,improve the starch saccharification efficiency and maltose yield,and enhance the feed feeding value.In terms of biological activity and availability,microbial source ofα-amylase has the most potential application,while bacterialα-amylase has a more prominent advantage.Further study of bacterialα-amylase can improve the utilization of starch and improve animal growth.In the paper,the source ofα-amylase,the structure and catalytic mechanism of bacterialα-amylase,and the improvement of bacterialα-amylase activity were reviewed,so as to provide reference for further development and application of bacterialα-amylase.

关 键 词：Α-淀粉酶 细菌 催化机制 活性提升 

分 类 号：S816.7[农业科学—饲料科学]