Isolation and Identification of Antifungal Components from Juniperus chinensis cv.Kaizuca with Ethyl Acetate

Antifungal components,which isolated from ethanol extract of Juniperus chinensis cv.Kaizuca with ethyl acetate,were tested against Valsa mali,Coniothyrium diplodiella,and so on,based on bioassay-guided method.The results showed that ethyl acetate extracts of J.chinensis had certain inhibition effects to all tested fungi,and the best inhibition rates against V.mali and C.diplodiella were 83.06% and 78.87% at 2 mg/mL,respectively.The EC50 of the active component Savinin against V.mali,C.diplodiella,Gibberella zeae,Elsinoe ampelina,Physalospora piricola and Fusarium oxysporum were 0.38,0.18,0.47,0.59,0.70 mg/mL,and 1.94 mg/mL,respectively.