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Study on antibiotic activities of citral on Penicillium funiculosum

CHENG Chanjuan,WEI Wei,HU Shangqin(College of Life Sciences,Chongqing Normal University,Chongqing 400047,China)  
Effect of different concentrations of citral on growth inhibition of Penicillium funiculosum were studied by filter paper and volatile activity test method.And the effect of different treated time of citral on percent inhibition of spore germination were studied.Result showed that the minimum inhibitory concentration(MIC) of citral for P.funiculosum was 6.0 mg.mL-1(Filter Paper Method) and 3.0 mg.mL-1(Volatile Active Substances Method),respectively.Significantly inhibition of spore germination was found after it was pretreated by MIC for 10 min.The germination time delayed for 6 h and germination rate reduced by 21.7% than the control.Moreover,when the pretreated time extended to 120 min,sproes germination time delayed for 10 h than the control and the germination rate reduced by 83.8% than the control.Citral exhibited good inhibition for growth and spore germination of P.funiculosum by the fumiga-tion method.Therefore,this paper provided theoretical basis for the use of citral in preventing industrial agricultural products from moulds.
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