壳寡糖影响亚硒酸钠对微生物生长的作用  

Effect of Sodium Selenite on Microorganism Growth in the Presence of Chitooligosaccharide

作　　者：汪连生[1] 彭惠娥[1] 李伟[1] 覃彩芹[1] 

机构地区：[1]生物质资源化学与环境生物技术湖北省重点实验室,孝感学院,湖北孝感432000

出　　处：《食品科学》2010年第7期196-198,共3页Food Science

基　　金：湖北省教育厅科研项目(Z200626001);国家自然科学基金项目(20472066)

摘　　要：用α-淀粉酶降解壳聚糖制备得到壳寡糖样品。微量热法测试显示在壳寡糖存在下,亚硒酸钠对大肠杆菌和金黄色葡萄球菌生长的抑制作用被降低。采用浊度法进一步探讨在不同浓度壳寡糖存在下,亚硒酸钠对大肠杆菌、金黄色葡萄球菌和嗜酸乳酸菌生长的影响,结果表明:壳寡糖有降低亚硒酸钠对微生物毒性作用的效果,壳寡糖浓度增加有利于微生物生长。Chitooligosaccharides were prepared through the hydrolysis of chitosan with α-amylase.Escherichia coli,Staphylococcus aureus and Lactobacillus acidophilus were used as experimental microorganisms.The effect of sodium selenite on microorganism growth in the presence of various concentrations of chitooligosaccharides was investigated by microcalorimetric and turbidity methods.Results indicated that the inhibitory effect of sodium selenite on microorganism growth exhibited an obvious decrease with increasing chitooligosaccharides concentration.

关 键 词：壳寡糖 亚硒酸钠 微生物 

分 类 号：O636.1[理学—高分子化学]