China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (8): 3087-3096.doi: 10.16431/j.cnki.1671-7236.2021.08.042

• Basic Veterinary Medicine • Previous Articles     Next Articles

Study on Antibacterial and Antiviral Activity of Different Components of Shuanghuanglian Soluble Powder

YANG Yanwen, LI Zimi, LIU Qun   

  1. School of Animal Husbandry and Veterinary Medicine, Southwest University for Nationalities, Chengdu 610041, China
  • Received:2020-12-08 Online:2021-08-20 Published:2021-08-19

Abstract: In order to provide scientific basis for the in-depth development of Shuanghuanglian soluble powder(honeysuckle, forsythia, Scutellaria baicalensis, 1:1:2) and the rational selection of medicine for poultry and livestock.In this study, Shuanghuanglian soluble powder produced by production technology of Shuanghuanglian oral liquid and its alcohol precipitates (polysaccharide components) and filtrate (flavonoids components) were used as research materials.The mammals Yak source rotavirus, Newcastle disease virus, yak source pathogenic Escherichia coli, Salmonella, Staphylococcus aureus as the research object, Oxford cup combined with two-fold dilution method was used to investigate the antibacterial activity in vitro.Using yak MA-104 cell line and chicken embryo fibroblast cell line UMNSAH/DF-1 as host cells, Thiazolium blue colorimetry (MTT) and cytopathic detection (CPE) were used to investigate the antiviral activity in vitro.The results showed that the antibacterial effect of the Shuanghuanglian soluble powder on Gram-negative bacteria(Yak Escherichia coli, Yak Salmonella, Escherichia coli quality control strain) was better than that on Gram-positive bacteria (Staphylococcus aureus, Staphylococcus aureus quality control strain from yaks).The flavonoids isolated from the Shuanghuanglian soluble powder might be the main antibacterial component of the Shuanghuanglian soluble powder, while the polysaccharide component had no antibacterial activity.The antibacterial effect of soluble powder flavone components of Shuanghuanglian on Gram-positive bacteria was better than that on Gram-negative bacteria.The minimum nontoxic concentration (TC0) of Shuanghuanglian soluble powder and its flavonoids and polysaccharides on UMNSAH/DF-1 cells were 2.58, 1.17 and 1.56 μg/mL, respectively.The TC0 of MA-104 cells were 1.290, 0.585 and 0.780 μg/mL, respectively.They all had good antiviral effect for the Yak rotavirus.The antiviral effect of Shuanghuanglian soluble powder against Newcastle disease virus was better than that of flavonoids and polysaccharides components.The results provided scientific basis for the in-depth development for the Shuanghuanglian soluble powder and rational selection of medicine for livestock and poultry.

Key words: Shuanghuanglian soluble powder; flavonoid components; polysaccharide components; antibacterial activity; antiviral activity

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