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Studies on Inhibitory Effects of Herbal Extracts Against Postharvest Pathogen from Citrus Fruits

REN Yan-fang,LIU Chang,XU Ling-ling,HE Jun-yu(College of Agriculture,Guizhou University,Guiyang,Guizhou 550025)  
In order to find out a new natural antisepic agent for citrus fruit fresh-keeping,ten kinds of Chinese herbal medicines were taken as materials to investigate the inhibitory effects on blue mould,green mold and alternaria from citrus by crossing method and growth rate method in vitro.The results showed that the inhibitory rate of Coptis chinensis Franch.and Lonicera japonica Thunb.reached above 90% on blue mould and green mold.Compared with control,there was no significant difference.Moreover,Coptis chinensis Franch.has best inhibitory effect on alternaria citr among other Chinese herbal medicines.However,Lonicera japonica Thunb.could promote the growth of alternaria citr.Synthetical inhibitory effects showed that Rhizoma Coptidis has best inhibitory effect on blue mould,green mold and alternaria citr.
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