不同振动模式对副溶血性弧菌生物被膜形成的影响
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TS201.3

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国家自然科学基金(31571917,31671779);上海市科技兴农项目(沪农科攻字2016第1-1号,沪农科推字2017第4-4号);上海市教委曙光计划(15SG48)


Effects of different vibration modes on Vibrio parahaemolyticus biofilm
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the National Natural Science Foundation of China (31571917 and 31671779), Shanghai Agriculture Applied Technology Development Program (Grant No.G20150408, G20160101) , the “Dawn” Program of Shanghai Education Commission (15SG48).

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    摘要:

    为了探究食品工厂环境下更为真实的生物被膜形成过程,有效地预防和控制食品加工过程中副溶血性弧菌生物被膜的污染情况,通过模拟不同的食品加工器械振动模式(水平旋转式振动、翘板式振动、垂直翻转式振动),研究不同振动模式下副溶血性弧菌在玻璃和不锈钢表面培养72 h生物被膜的形成过程,分析不同振动模式对被膜生物量、被膜结构以及被膜胞外基质中胞外多糖和胞外蛋白的影响。结果发现:振动条件下副溶血性弧菌被膜形成量明显减少;3种振动模式下垂直翻转式振动条件下被膜生成量最少;同种振动方式下副溶血性弧菌在不锈钢表面形成量大于玻璃表面;增加水平旋转转速,被膜生成量减少;振动导致被膜总生物量减少,多孔性和均一性增加,生物被膜结构趋于简单,被膜比较分散。振动导致生物被膜胞外多糖和胞外蛋白含量减少。结果表明:不同的器械振动对被膜的影响不同,本研究模拟的3种振动模式中选择垂直翻转式振动模式可以有效地减少与抑制生物被膜的生长;振动会导致细菌生物被膜胞外多糖和蛋白的减少,影响被膜的孔径、均一性等结构特性,被膜结构变得松散,被膜生成量减少。

    Abstract:

    Vibrio parahaemolyticus biofilm formation in the food factory environment was studied, in order to prevent and control the biofilm pollution effectively. The different vibration modes of food processing equipment (such as horizontal rotary vibration, bevel vibration and vertical rotary vibration) were simulated to investigate Vibrio parahaemolyticus formation process on the surfaces of glass and stainless steel for 72 h, and the effect of vibration on the biomass, architecture and extracellular polymeric substances of biofilm was analyzed. The results showed that:the biofilm formation under shaking cultivation decreased significantly; the biomass of biofilm was the least under vertical rotary vibration; the biomass of biofilm on the stainless steel surface is greater than that on glass surface under same shaking cultivation; the biofilm formation was reduced with the increasing of horizontal rotation speed; the vibration caused the biovolume decreased, and the porosity and homogeneity increased, the architecture of biofilm dispersed; and the amount of extracellular polysaccharides and extracellular proteins of the biofilm decreased. All results show that different vibration modes have different effects on the biofilm; the selection of the vertical rotary vibration mode out of the three vibration modes can reduce and inhibit the growth of the biofilm effectively; the vibration cause the reduction of exopolysaccharide and protein, affecting the structural characteristics such as porosity and homogeneity; and the structure and formation of biofilm becomes simple and decrease.

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齐家伟,董旭日,柴旭锋,韩乔,张昭寰,檀玲,刘海泉,潘迎捷,赵勇.不同振动模式对副溶血性弧菌生物被膜形成的影响[J].上海海洋大学学报,2020,29(6):950-960.
QI Jiawei, DONG Xuri, CHAI Xufeng, HAN Qiao, ZHANG Zhaohuan, TAN Ling, LIU Haiquan, PAN Yingjie, ZHAO Yong. Effects of different vibration modes on Vibrio parahaemolyticus biofilm[J]. Journal of Shanghai Ocean University,2020,29(6):950-960.

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  • 收稿日期:2019-04-25
  • 最后修改日期:2020-04-16
  • 录用日期:2020-05-09
  • 在线发布日期: 2020-12-01
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