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本文对药用植物的抑菌作用进行了研究,测试了不同药用植物对细菌的抑菌圈大小、最低抑菌浓度及最低杀菌浓度,试验了提取成分对热的稳定性。结果发现:小檗色素对大肠杆菌抑菌作用最强,酸浆花萼色素对变形杆菌抑菌作用最强,红景天浓缩液对枯草芽孢杆菌抑菌作用最强,小茴香浓缩液对四种待试菌无抑菌作用;小檗色素对四种待试菌的最低抑菌浓度和最低杀菌浓度分别为:枯草芽孢杆菌MIC2.5%、MBC5.0%,大肠杆菌MIC5.0%、MBC5.0%,金黄色葡萄球菌MIC2.5%、MBC5.0%,变形杆菌MIC1.25%、MBC1.25%;酸浆花萼色素的最低抑菌浓度和最低杀菌浓度分别为:枯草芽孢杆菌MIC4.18%、MBC4.18%,大肠杆菌MIC8.35%、MBC8.35%,金黄色葡萄球菌MIC4.18%、MBC4.18%,变形杆菌MIC4.18%、MBC8.35%;红景天浓缩液的最低抑菌浓度和最低杀菌浓度分别为:枯草芽孢杆菌MIC2.09%、MBC4.18%,大肠杆菌MIC2.09%、MBC2.09%,金黄色葡萄球菌MIC8.35%、MBC8.35%,变形杆菌MIC4.18%、MBC8.35%。小檗色素、酸浆花萼色素和红景天浓缩液抑菌成分对高温稳定,抑菌机理尚待研究。
In this paper, the antibacterial effects of medicinal plants were studied. The size, minimum inhibitory concentration and minimum bactericidal concentration of different medicinal plants against bacteria were tested. The stability of extracted components against heat was tested. The results showed that the antibacterial activity of the antimony pigment was the strongest in the E. coli, and the antibacterial effect of the proanthocyanidin on the propolis was the strongest. The antibacterial effect of the concentrate of Rhodiola rosea on the Bacillus subtilis was the strongest, and that of the cumin concentrate was four. The test bacteria had no antibacterial effect; the minimum inhibitory concentration and the minimum bactericidal concentration of the antimony pigments for the four test bacteria were: MIC 2.5% for Bacillus subtilis, 5.0% for MBC, 5.0% for E. coli, and MBC5. .0%, Staphylococcus aureus MIC 2.5%, MBC 5.0%, Proteus MIC 1.25%, MBC 1.25%; The minimum inhibitory concentration and the minimum bactericidal concentration of Physalospora fuliginea were: Bacillus subtilis MIC4 .18%, MBC4.18%, E. coli MIC8.35%, MBC8.35%, Staphylococcus aureus MIC4.18%, MBC4.18%, Proteus MIC4.18%, MBC8.35%; Rhodiola The minimum inhibitory concentration and the minimum bactericidal concentration of the concentrate were: Bacillus subtilis MIC 2.09%, MBC 4.18%, E. coli MIC 2.09%, MBC 2.09%, Staphylococcus aureus MIC 8.35%, MBC8. 35%, Proteus MIC 4.18%, MBC 8.35%. The antibacterial components of the small bismuth pigments, phytoferric pigments and rhodiola concentrates are stable to high temperature, and the mechanism of bacteriostasis has yet to be studied.