Guo Weiping, Xu Yunfeng, Yang Yangyang, Xiang Jinle, Chen Junliang, Luo Denglin, Xie Qinggang
College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China.
Heilongjiang Feihe Dairy Co., Ltd., Beijing 100015, China.
Foods. 2023 Nov 28;12(23):4301. doi: 10.3390/foods12234301.
has posed a huge threat to human health and the economy. Oleuropein has antibacterial activities against various microorganisms but research on its effect on the biofilm is limited. This research aimed to estimate the antibiofilm activities of oleuropein against . The results suggest that the minimum inhibitory concentration of oleuropein against ATCC 25923 was 3 mg/mL. The biomass of biofilms formed on the microplates and coverslips and the viability of bacteria were significantly reduced after the treatment with oleuropein. The scanning electron microscopy observation results indicated that the stacking thickness and density of the biofilm decreased when was exposed to oleuropein. It had a bactericidal effect on biofilm bacteria and removed polysaccharides and proteins from mature biofilms. The effects of oleuropein on the biofilm could be explained by a reduction in bacterial secretion of extracellular polymeric substances and a change in bacterial surface hydrophobicity. Based on the above findings, oleuropein has the potential to be used against food pollution caused by biofilms.
已对人类健康和经济构成巨大威胁。橄榄苦苷对多种微生物具有抗菌活性，但关于其对生物膜影响的研究有限。本研究旨在评估橄榄苦苷对……的抗生物膜活性。结果表明，橄榄苦苷对ATCC 25923的最低抑菌浓度为3毫克/毫升。用橄榄苦苷处理后，微孔板和盖玻片上形成的生物膜生物量以及细菌活力显著降低。扫描电子显微镜观察结果表明，当……暴露于橄榄苦苷时，生物膜的堆积厚度和密度降低。它对生物膜细菌具有杀菌作用，并从成熟生物膜中去除多糖和蛋白质。橄榄苦苷对生物膜的影响可以通过细菌细胞外聚合物分泌的减少和细菌表面疏水性的变化来解释。基于上述发现，橄榄苦苷有潜力用于对抗由……生物膜引起的食品污染。
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