湘西北武陵山区黑石耳提取物抑菌作用的研究

Bacteriostasis of Extract of Umbilicaria Growing in Northwestern Hunan,Wuling Mountains

黑石耳为石耳属地衣,是真菌和蓝藻高度结合的共生复合体,具有食用、药用等多重研究价值.用旋转蒸发仪以水提法制备黑石耳粗提取物和石耳多糖,经平板抑制法和试管抑制法抑菌试验显示,黑石耳粗提取物具有一定的抑菌作用,对大肠杆菌和金黄色葡萄球菌的最小抑菌浓度为0.057 mg/mL,对枯草芽孢杆菌的最小抑菌浓度为0.115 mg/mL,黑石耳多糖对上述三种细菌没有抑菌作用.湘西北武陵山区张家界生长的黑石耳应具有一定的药品和保健品开发价值.

Umbilicariabelongs toUmbilicariahoffm. Lichens, a highly integrated composite body of fungus andalgae. Umbilicaria have edible, medicinaland other muhipleresearch value. Using a rotary evaporatortoprepareumbilicariacrude extract andumbilicariapolysaccharide by water extraction. Through flatinhibition bacterialtest and tubeinhibition bacteriahestshowumbilicariacrude extracthave a certaininhibitory effect. MinimumInhibitory Concentration of umbilicaria crude extract to Escherichia coli and Staphyloccocusaureus is 0.057 mg/mL, toBacillus subtilis is 0. 115 mg/mL. Umbilicariapolysaccharidehaven＇t inhibitory effect toEscherichia coli, Bacillus subtilis and Staphyloccocusaureus. Umbilicaria growing innorthwesternHunanZhangjiajieWuling Mountainsshould havesome development value indrugs and health products.