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壳聚糖对芒果炭疽病菌、蒂腐病菌的拮抗作用
引用本文:钟秋平,夏文水.壳聚糖对芒果炭疽病菌、蒂腐病菌的拮抗作用[J].食品与机械,2005,21(1):25-27.
作者姓名:钟秋平  夏文水
作者单位:江南大学食品学院,江苏,无锡,214036
基金项目:江苏省科技发展计划项目 (项目编号 :BG2 0 0 3 3 15 )资助
摘    要:以芒果炭疽病菌、蒂腐病菌为实验菌株,研究了不同pH、酸溶剂的种类对壳聚糖抗菌活性及其抗菌稳定性的影响。结果表明:壳聚糖的抑菌率随着壳聚糖浓度的提高而提高;在pH4.8和pH6.0的环境中,壳聚糖的抗菌能力较强;壳聚糖的乳酸溶液对芒果蒂腐病菌有很强的抑制力;壳聚糖连续刺激诱导40代后,芒果炭疽病菌、蒂腐病菌的EC50值均有所提高,其中以芒果球二孢霉蒂腐病菌和芒果褐色蒂腐病菌变化最显著,说明壳聚糖对其抗菌稳定性最差。

关 键 词:蒂腐病  芒果  炭疽病菌  拮抗作用  壳聚糖  EC50  抗菌能力  诱导  刺激  抗菌活性
修稿时间:2004年11月2日

Antifungal activity of chitosan for anthracnose and stem-rot pathogene in mango fruit
ZHONG Qiu-ping,XIA Wen-shui.Antifungal activity of chitosan for anthracnose and stem-rot pathogene in mango fruit[J].Food and Machinery,2005,21(1):25-27.
Authors:ZHONG Qiu-ping  XIA Wen-shui
Abstract:The effects of pH and acid solvent on the antifungal activities of chitosan by using anthracnose and stem-end rot pathogene in mango fruits were studied. The results showed that pH 4.8 and pH 6.0 was optimum to the antifungal activity of chitosan. The antifungal activity of chitosan was increased with its concentration. The activity of inhibition of chitosan in lactic acid was stronger for stem-rot pathogene. The EC50 value of the tested pathogene increased and had some resistance after the isolates were successively stimulated 40 times by application of chitosan and the Botryodiplodia theobromae Pat. had the strongest resistance .
Keywords:Chitosan  Mango fruit  Anthracnose isolate  Stem-rot isolate
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