壳聚糖对番茄叶霉病菌的抑制作用  

Anti-Fungal Activity of Chitosan against Fulvia fulva(Cooke) Cifferri

作　　者：李美芹[1] 肖慧[1] 孟祥红[1] 段方猛[2] 陈西广[1] 唐学玺[1] 

机构地区：[1]中国海洋大学海洋生命学院 [2]莱阳农学院植物保护系,山东青岛266109

出　　处：《武汉大学学报（理学版）》2007年第2期244-248,共5页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金资助项目(30270258);教育部新世纪优秀人才计划项目(NCET-05-0597)

摘　　要：以番茄叶霉病菌为实验菌种,用含毒介质法系统研究了壳聚糖的脱乙酰度、分子量、浓度、环境pH值及溶剂等因素对壳聚糖抑菌活性的影响.结果表明,壳聚糖对番茄叶霉病菌具有明显抑制作用;在研究范围内,随浓度的增加和环境pH值降低,抑菌活性增强;较理想的溶剂是乳酸和醋酸;脱乙酰度为86%、分子量为213×103的壳聚糖抑菌效果较好;0.2%的壳聚糖与三唑酮等农药抑菌效果相同.The effects of concentration, deacetylation degree, molecular weight（MW）, solvent, and pH of medium on the antifungal activity of chitosan against Fulvia fulva （Cooke） Cifferri in vitro have been investigated. The results indicated that the chitosans have strong anti-fungal activities, and the activity increased with the increase of concentration, decrease of pH of medium, lactic acid and acetic acid were the better solvent, the 86% of deacetylation degree and the middle molecular weight of CS have better effect than others.

关 键 词：壳聚糖 番茄叶霉病菌 抑菌活性 

分 类 号：O636.1[理学—高分子化学]