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壳聚糖对金黄色葡萄球菌抑菌活性的研究

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研究了壳聚糖对金黄色葡萄球菌抑菌活性,考察了不同壳聚糖浓度、pH值、金属离子、醋酸浓度对壳聚糖抑制金黄色葡萄球菌活性的影响,并以壳聚糖浓度、pH值、醋酸浓度为因素进行正交试验,确定了壳聚糖对金黄色葡萄球菌抑菌活性的最优条件.实验结果表明,壳聚糖对金黄色葡萄球菌的抑制能力随其浓度的升高而增强;壳聚糖溶于浓度为2%的醋酸溶液时,培养基pH控制在6.0时壳聚糖的抑菌活性最强;金属离子在一定程度上降低了壳聚糖的抑菌活性;这3个因素对壳聚糖的抑菌活性的影响程度为壳聚糖浓度>pH值>醋酸浓度.
Study on Antimicrobial Activity of Chitosan Against Staphylococcus aureus
The antibacterial activity of chitosan against Staphylococcus aureus was studied and the effect of different chitosan concentrations, pH values, metal ions, the acetic concentrations on the antimicrobial activity of chitosan were investigated. The optimal conditions were determinated by orthogonal test. Results showed that the inhibition of chitosan on Staphylococcus aureus increased with the chitosan concentration, the antibacterial activity of chitosan was the best when it was dissolved in 2% acetic, the pH value of culture medium was 6.0, and the influence of chitosan concentration, pH value of culture medium and acetic concentration on the antibacterial activity were chitosan concentration,pH value,acetic concentration as follows. Antibacterial activity of chitosan decreased when metal ions existed.

chitosanStaphylococcus aureusantibacterial activity

廖爱琳、吴晓萍、易蜀婷、邓楚津

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广东海洋大学食品科技学院,广东湛江524088

壳聚糖 金黄色葡萄球菌 抑菌活性

2011

中国食物与营养
中国农业科学院 国家食物与营养咨询委员会

中国食物与营养

CSTPCD
影响因子:0.754
ISSN:1006-9577
年,卷(期):2011.17(4)
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