食品科学 ›› 2020, Vol. 41 ›› Issue (15): 88-95.doi: 10.7506/spkx1002-6630-20190730-422

• 基础研究 • 上一篇    下一篇

反式肉桂醛对副溶血性弧菌毒力因子的抑制作用

王硕,邓海潮,郭都,庸琪瑶,赵鹏瑜,邓瑞莎,石超,夏效东   

  1. (西北农林科技大学食品科学与工程学院,陕西 杨凌 712100)
  • 出版日期:2020-08-15 发布日期:2020-08-19
  • 基金资助:
    中国博士后科学基金项目(2017M623256);国家自然科学基金青年科学基金项目(31801659); 中央高校基本科研业务费专项资金项目(2452017228)

Anti-virulence Effect of Trans-cinnamaldehyde against Vibrio parahaemolyticus

WANG Shuo, DENG Haichao, GUO Du, YONG Qiyao, ZHAO Pengyu, DENG Ruisha, SHI Chao, XIA Xiaodong   

  1. (College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China)
  • Online:2020-08-15 Published:2020-08-19

摘要: 为探究反式肉桂醛对副溶血性弧菌毒力因子的抑制作用,首先研究了反式肉桂醛对副溶血性弧菌的最小抑菌浓度(minimum inhibitory concentration,MIC)及亚抑制浓度,随后研究评价了反式肉桂醛对副溶血性弧菌的泳动运动性、生物被膜形成能力、黏附及侵入宿主细胞能力的影响。结果表明:反式肉桂醛对10 株副溶血性弧菌的MIC为50~200 μg/mL,对副溶血性弧菌ATCC 17802的亚抑制浓度为1/16 MIC、1/32 MIC、1/64 MIC。亚抑制浓度下,反式肉桂醛可降低副溶血性弧菌的泳动运动能力;通过结晶紫染色法和场发射扫描电子显微镜观察,发现反式肉桂醛可减弱副溶血性弧菌生物被膜形成能力;并且反式肉桂醛能使副溶血性弧菌黏附及侵入Caco-2细胞的能力降低。以上研究结果表明,反式肉桂醛具有降低副溶血性弧菌对人体感染能力的潜力,这为进一步开发反式肉桂醛应用于控制副溶血性弧菌引起的食源性疾病提供了理论依据。

关键词: 反式肉桂醛, 副溶血性弧菌, 毒力因子, 生物被膜

Abstract: The aim of the present study was to evaluate the anti-virulence effect of trans-cinnamaldehyde (TC) against Vibrio parahaemolyticus. The minimum inhibitory concentration (MIC) and sub-inhibitory concentration (SIC) were investigated. The inhibitory effects against motility, biofilm formation ability, and the ability to adhere to and invade host cells were also investigated. The results showed that the MICs of TC against 10 strains of V. parahaemolyticus were 50–200 μg/mL, and the SICs for V. parahaemolyticus ATCC 17802 were 1/16 MIC, 1/32 MIC, and 1/64 MIC. TC at SICs could repress the motility and biofilm formation ability, and reduce the ability of V. parahaemolyticus ATCC 17802 to adhere to and invade Caco-2 cells. Therefore, TC has the potential to reduce the ability of V. parahaemolyticus to infect humans, which provides a theoretical basis for further development of TC for the control of foodborne diseases caused by V. parahaemolyticus.

Key words: trans-cinnamaldehyde, Vibrio parahaemolyticus, virulence factors, biofilm

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