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五味子水提物抑菌活性的研究

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摘要:采用水煎法制备五味子水提物(SCD),通过SCD的最小抑菌浓度、最小杀菌浓度检测和纸片扩散抑制试验评估SCD的体外抑菌活性,通过SCD对雏鸡感染大肠杆菌的治疗试验评估SCD的体内抑菌活性。结果显示,SCD对6株标准株和6株大肠杆菌分离株均具有显著的抑菌活性。SCD对雏鸡感染大肠杆菌的治疗试验结果显示,口服SCD可以显著降低感染大肠杆菌雏鸡的死亡率。这表明SCD具有良好的抑菌活性,且对环丙沙星耐药的大肠杆菌均有效,可以作为治疗细菌性疾病的备选药物。

关键词:五味子;水提物;抗菌活性;耐药大肠杆菌;SPF鸡

中图分类号:S476.8 文献标识号:A 文章编号:1001-4942(2019)08-0118-05

Abstract The aqueous extract of Schisandra chinensis (SCD) was prepared by water decoction, and the antimicrobial activity of SCD in vitro was assessed through minimal inhibitory concentration, minimal bactericidal concentration test and Kirby-Bauer zone of inhibition assay. In addition, the antimicrobial activity of SCD in vivo was tested through therapeutic effect of oral SCD on chickens infected Escherichia coli. The results showed that SCD exhibited excellent antimicrobial activity against all the six reference bacterial strains and six field E. coli strains. Therapeutic experiment found oral SCD could significantly reduce the mortality of chickens infected by E. coli. It suggested that SCD could serve as an excellent antibacterial agent for treating bacterial infections, including CIP-resistant E. coli strains.

Keywords Schisandra chinensis;Aqueous extract;Antimicrobial activity; Ciprofloxacin-resistant Escherichia coli; SPF chicken

细菌性疾病严重危害人类健康,是引起世界范围内死亡的主要原因之一。尽管在抗生素治疗方面取得进步,有效控制了传染病的流行和发生,但耐药菌的出现和增...

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