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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (24): 135-142.doi: 10.11924/j.issn.1000-6850.casb2022-0712

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Four Food-derived Polysaccharides: Monosaccharide Composition and Their Inhibitory Effects on Methicillin-resistant Staphylococcus aureus

YIN Hong1(), ZHAO Shijing2, XIAO Jiu3, GAO Qifang2, RAN Ganqiao1, XU Dan3()   

  1. 1 Bio-Agriculture Institute of Shaanxi, Xi'an 710043
    2 Zhashui Bojinmi Fungus Industry Development Co., Shangluo, Shaanxi 711400
    3 School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049
  • Received:2022-08-25 Revised:2022-10-15 Online:2023-08-25 Published:2023-08-23

Abstract:

The research aims to provide a possible alternative to the problem of drug resistance in pathogenic bacteria. With fungus, yam, lily and wolfberry as raw materials, water extraction and alcohol precipitation method, ion chromatography, crystal violet staining and other techniques were used to compare and analyze the monosaccharide composition of four kinds of foodborne polysaccharides and their inhibitory effect on methicillin-resistant Staphylococcus aureus (MRSA). The results showed that glucose was the main monosaccharide of the four polysaccharides. Auricularia polysaccharides had significant inhibitory effects on the growth, biofilm formation, cell adhesion and toxicity of MRSA. Lilium polysaccharide and yam polysaccharide only had significant inhibitory effect on the cell adhesion and toxicity of MRSA, but had no significant inhibitory effect on the growth of MRSA and the formation of biofilm. Lycium barbarum polysaccharide had little inhibitory effect on MRSA. Auricularia auricularia polysaccharide has better inhibition ability against pathogenic bacteria MRSA than the other three foodborne polysaccharides. As a natural product with potential antibacterial applications against MRSA, it has the value of further characterization and optimization.

Key words: food-derived polysaccharide, monosaccharide composition, Methicillin-resistant Staphylococcus aureus, antibacterial activity