茶多酚、柠檬醛和肉桂醛对食源菌生物被膜的影响研究Effect of Tea Polyphenols,Citral and Cinnamaldehyde on Biofilm Formation of Food-borne Pathogenic Bacteria
张文艳,张宏梅,周文渊,谢丽斯
摘要(Abstract):
研究茶多酚、柠檬醛、肉桂醛在亚抑菌浓度下对食源性金黄色葡萄球菌和肠炎沙门氏菌生物被膜形成能力的影响。采用二倍稀释法确定三种物质的最小抑菌浓度,在亚抑菌浓度下作用于10株金黄色葡萄球菌和10株肠炎沙门氏菌,用微孔板法检测两种细菌生物被膜形成情况。结果表明茶多酚、柠檬醛、肉桂醛在亚抑菌浓度下对金黄色葡萄球菌和肠炎沙门氏菌均有不同程度的抑制作用,差异有统计学意义(P<0.05),且随着各物质浓度的加大抑制作用也增强,茶多酚对革兰氏阳性菌金黄色葡萄球菌成膜抑制能力比对革兰氏阴性菌肠炎沙门氏菌的成膜抑制能力要强,差异有统计学意义(P<0.05)。柠檬醛和肉桂醛对两种不同细菌的成膜抑制能力没有差异。
关键词(KeyWords): 茶多酚;柠檬醛;肉桂醛;生物膜;抑制
基金项目(Foundation): 国家自然科学基金(20707003);; 广东省211重点学科广东工业大学轻工化工学院创新人才项目;; 广东省大学生创新实验项目(2010044)
作者(Author): 张文艳,张宏梅,周文渊,谢丽斯
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