Antibacterial activity and mechanism of action of chitosan solutions against apricot fruit rot pathogen Burkholderia seminalis

文献类型： 外文期刊

第一作者： Lou, Miao-Miao

作者： Lou, Miao-Miao;Zhu, Bo;Muhammad, Ibrahim;Li, Bin;Xie, Guan-Lin;Li, Hong-Ye;Lou, Miao-Miao;Zhu, Bo;Muhammad, Ibrahim;Li, Bin;Xie, Guan-Lin;Li, Hong-Ye;Wang, Yan-Li;Sun, Guo-Chang

作者机构：

关键词： Antibacterial mechanism;Apricot;Biofilm;Burkholderia seminalis;Chitosan

期刊名称：CARBOHYDRATE RESEARCH （ 影响因子：2.104； 五年影响因子：2.192 ）

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年卷期：

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收录情况： SCI

摘要： The in vitro antibacterial activity and mechanism of action of two kinds of acid-soluble chitosan and one water-soluble chitosan against apricot fruit rot pathogen Burkholderia seminalis was examined in this study. Results showed that water-soluble chitosan displayed limited antibacterial activity at four tested concentrations. However, two kinds of acid-soluble chitosan solution at 2.0 mg/mL had strong antibacterial activity against B. seminalis although weak antibacterial activity was observed at a concentration lower than 1 mg/mL. The antibacterial activity of acid-soluble chitosan may be due to membrane disruption, cell lysis, abnormal osmotic pressure, and additional chitosan coating around the bacteria based on integrity of cell membranes test, out membrane permeability assays and transmission electron microscopy observation. In addition, biofilm biomass were markedly reduced after treating with two kinds of acid-soluble chitosan at concentrations of 2.0 and 1.0 mg/mL for 3 and 12 h, indicating the importance of biofilm formation in the antibacterial mechanism of chitosan. Overall, the results clearly indicated that two kinds of acid-soluble chitosan had a potential to control the contamination of apricot fruits caused by B. seminalis.

分类号： O62

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