[Objectives]The research was to explore the antifungal effects of citronellal,wintergreen oil and their composite essence on Penicillium citrinum.[Methods]The inhibition zones of citronellal,wintergreen oil and their ...[Objectives]The research was to explore the antifungal effects of citronellal,wintergreen oil and their composite essence on Penicillium citrinum.[Methods]The inhibition zones of citronellal,wintergreen oil and their composite essence against P.citrinum were determined by disk diffusion method,and the growth of inhibition zone plate was observed.The fumigation fungicidal rate of fungi-bearing rice paper within 7 d was determined by plate counting method.[Results]Citronellal had strong antifungal effect,and wintergreen oil could slow down the growth rate of P.citrinum.The combination of citronellal and wintergreen oil had a synergistic effect.As fumigants,both citronellal and composite essence had fungicidal rates up to 100%within 7 d.Combined with anaerobic treatments,all the three essential oils could improve the fungicidal efficiency.The adsorbent in deoxidizing agent would adsorb the essential oils,so that their fumigation had a certain slow release effect.[Conclusions]This study can provide a more friendly and efficient method for the prevention and control of cultural relics mold.展开更多
本文研究浓硫酸催化水杨酸与甲醇酯化反应制备冬青油的生产工艺,并利用折光仪和紫外光谱仪测试对产品进行了表征。通过考察催化剂种类、物料配比、反应时间、催化剂用量和反应温度对产率的影响,确定了制备冬青油的最佳工艺条件。结果表...本文研究浓硫酸催化水杨酸与甲醇酯化反应制备冬青油的生产工艺,并利用折光仪和紫外光谱仪测试对产品进行了表征。通过考察催化剂种类、物料配比、反应时间、催化剂用量和反应温度对产率的影响,确定了制备冬青油的最佳工艺条件。结果表明,以浓硫酸为催化剂时催化活性最佳;当取水杨酸为6.9 g时,水杨酸与甲醇配比为1:20,浓硫酸用量为4 m L,在78℃下反应12 h,冬青油的产率最高,可达到82.9%。展开更多
基金National Key Research and Development Program of China(2020YFC1522500)Special Project of Technical Innovation and Application Development of Chongqing City(cstc2020jscx-msxmX0097)。
文摘[Objectives]The research was to explore the antifungal effects of citronellal,wintergreen oil and their composite essence on Penicillium citrinum.[Methods]The inhibition zones of citronellal,wintergreen oil and their composite essence against P.citrinum were determined by disk diffusion method,and the growth of inhibition zone plate was observed.The fumigation fungicidal rate of fungi-bearing rice paper within 7 d was determined by plate counting method.[Results]Citronellal had strong antifungal effect,and wintergreen oil could slow down the growth rate of P.citrinum.The combination of citronellal and wintergreen oil had a synergistic effect.As fumigants,both citronellal and composite essence had fungicidal rates up to 100%within 7 d.Combined with anaerobic treatments,all the three essential oils could improve the fungicidal efficiency.The adsorbent in deoxidizing agent would adsorb the essential oils,so that their fumigation had a certain slow release effect.[Conclusions]This study can provide a more friendly and efficient method for the prevention and control of cultural relics mold.
文摘本文研究浓硫酸催化水杨酸与甲醇酯化反应制备冬青油的生产工艺,并利用折光仪和紫外光谱仪测试对产品进行了表征。通过考察催化剂种类、物料配比、反应时间、催化剂用量和反应温度对产率的影响,确定了制备冬青油的最佳工艺条件。结果表明,以浓硫酸为催化剂时催化活性最佳;当取水杨酸为6.9 g时,水杨酸与甲醇配比为1:20,浓硫酸用量为4 m L,在78℃下反应12 h,冬青油的产率最高,可达到82.9%。
