Extraction of anti-tomato late blight from Galla chinensis and study on the extracting technology

This paper studied the antifungal activity components extracted from Galla chinensis agnist tomato late blight, with the minimum inhibitory concentration (MIC) and minimal fungicidal concentration (MFC) were measured . The optimal exraction parame-ters for Galla chinensis were obtained as followed : extraction temperature 80℃, extraction time 3h, extraction times 2 and the ratio of herb to water was 1∶25. The minimum inhibitory concentration (MIC) was 15.7mg/mL, MFC was 31.3mg/mL. The inhibition zone for tomato late blight reached 33.2mm under circvmstances mentioned above.