[ Objective ] The paper was to explore the antimicmbial activities of extracts from Xylaria striata via submerged culture. [ Methods ] The antibacterial activities of X. striata extracts against 10 kinds of bacteria were determined using Oxford cup method and mJcroplate assay, and the antifungal activities against nine kinds of pathogenic fungi were determined using mycelial growth rate method. [ Results ] The inhibition zone diameters of the mycelium extract against tested bacte- ria ranged from 13.0 to 17.5 mm, and that of the fermentation broth extract ranged from 10.5 to 12.7 ram. Enterobacter cloacae was the most sensitive to both my- celium extract and fermentation broth extract, with the inhibition zone diameters of 17.1 and 12.7 mm and the minimum inhibitory concentrations of 2.5 and 5 mg/mL, respectively. The inhibitory effects of the mycelium extract and the fermentation broth extract against Fusarium graminearum were the greatest, and the in- hibition rates were 89.88% and 69.53%, respectively. [ Conclusion] X. striata has potential antimicrobial activity and deserves to be further studied.
Liu XiaJiang XiaolanMa ChaoYuan XiaohongHe XinshengMa Lin
