摘要
左聚糖来源于单子叶植物和微生物,在细菌中分布最广泛。左聚糖是由β-2,6-糖苷键连接的D-果糖残基作为主链,以一些β-2,1-糖苷键连接作为支链组成的果聚糖。左聚糖降解酶分为3种类型:左聚糖酶(levanase)[EC3.2.1.65]、左聚糖生物水解酶(β-2,6-fructan 6-levanbiohydrolase,LF2ase)[EC3.2.1.64]和左聚糖果糖转移酶(levan fructotransferase,LFTase)[EC4.2.2.16]。左聚糖降解酶能将左聚糖催化生成低聚果糖、果二糖、双果糖酐IV等,是食品及医药领域的潜在资源。文章介绍了左聚糖降解酶的来源、酶学性质、结构,概述了左聚糖降解酶在食品领域的应用,对其发展趋势和研究方向进行了展望。
Levan is from monocotyledonous plants and microorganisms,and are most widely distributed in bacteria.Levan is a fructan with D-fructose residue linked byβ-2,6-glycosidic bonds as the main chain and someβ-2,1-glycosidic bonds as the branched chain.Levan-degrading enzyme is classified into three types:levanase[EC3.2.1.65],β-2,6-fructan 6-levanbiohydrolase(LF2ase)[EC3.2.1.64],and levan fructotransferase(LFTase)[EC4.2.2.16].Levan-degrading enzyme can catalyze levan to produce fructooligosaccharide,fructose disaccharide,difructose anhydride IV(DFA IV)and so on,making it a potential resource for food and medicine fields.In this paper,the sources,enzymatic properties and structure of levan-degrading enzyme are introduced,the application of levan-degrading enzyme in food field is summarized,and its development trend and research direction are prospected.
作者
陈倩倩
赵紫琰
徐海洋
徐淋香
CHEN Qian-qian;ZHAO Zi-yan;XU Hai-yang;XU Lin-xiang(Jiangsu Key Laboratory of Marine Biological Resources and Environment,Jiangsu Ocean University,Lianyungang 222005,China;College of Ocean Food and Biological Engineering,Jiangsu Ocean University,Lianyungang 222005,China;Collaborative Innovation Center of Marine Bioindustrial Technology in Jiangsu Province,Lianyungang 222005,China;Jiangsu Institute of Marine Resources Development,Lianyungang 222005,China)
出处
《中国调味品》
CAS
北大核心
2023年第10期204-207,213,共5页
China Condiment
基金
江苏省高校自然科学基金面上项目(22KJB180015)
江苏省博士后科研资助计划(2019K215)
江苏省海洋资源开发研究院开放课题(JSIMR202111)。
关键词
左聚糖
左聚糖降解酶
酶学性质
应用
levan
levan-degrading enzyme
enzymatic properties
application
