银杏外种皮系统溶剂提取物抑菌活性的研究

银杏外种皮系统溶剂提取物,是指用各种有机溶剂系统对银杏外种皮甲醇提取物进行分离而制出不同溶剂的提取物。用这些提取物分别对多种食品污染菌和致病菌进行抑菌性研究。实验研究表明,银杏外种皮提取物对枯草芽孢杆菌、大肠杆菌、酵母菌、金黄色葡萄球菌、痢疾杆菌和绿脓杆菌等25种菌类均有明显的抑制作用。这种作用不仅对浅部的真菌,而且对深部的真菌也有明显的抑制作用。体积分数为0.1%的白果酸抑制真菌的有效率达90%,而体积分数为0.5%的克霉唑抑制真菌的有效率仅为68%,同时该提取物对各种革兰氏阴性和阳性细菌也均有抑制作用。

Study on Antibacterial Activity of Solvent Extraction in Ginkgo Biloba Exocarp System

The outer seed capsule system solvent extracts of ginkgo refers to separating methanol extracts with various organic solvent system, and obtaining different solvent extract. These extracts then are used for a wide range of pathogenic bacteria and food contamination for antibacterial research. Experiment showed that the kind of ginkgo extracts from outer seed capsule have significantly inhibition to 25 species of fungi, such as bacillus subtilis, E. coli, yeast, staphylococcus aureus, shigella bacteria, pseudomonas aeruginosa and so on. This distinctive action is not only to the shallow epiphyte but also to the deep epiphyte. The inhibited fungi efficiency of 0.1% acid reaches 90% and the 0.5% clotrimazole is 68%. And they also have inhibition action to gram-negative and gram-positive bacteria.