摘要
分别以玉米和芝麻秸秆为原料,采用低温分段热解技术制备了不同热解温度下的秸秆木醋液(SWV),测定了秸秆木醋液的基本性质,将秸秆木醋液与斑蝥原液复配制备了木醋液-斑蝥原液复合剂,并分别进行了抗菌活性试验。结果表明,在设定的热解温度范围内,玉米秸秆和芝麻秸秆木醋液总收率分别为20.92%和18.75%,最佳热解温度分别为180℃和220℃。抗菌活性试验表明,2种秸秆木醋液-斑蝥原液复合剂具有较好的广谱抗菌活性。就大肠杆菌而言,玉米秸秆木醋液-斑蝥原液复合剂、芝麻秸秆木醋液-斑蝥原液复合剂体积比均为1∶2(220℃木醋液)的抗菌活性最佳;就金黄色葡萄球菌而言,玉米秸秆木醋液-斑蝥原液复合剂体积比为1∶8(180℃木醋液),芝麻秸秆木醋液-斑蝥原液复合剂体积比为1∶4(240℃木醋液)的抗菌活性最佳。复合剂对金黄色葡萄球菌的抗菌活性明显优于大肠杆菌,秸秆木醋液对斑蝥原液的抗菌活性有明显的增强作用。
Corn and sesame stalks were used as raw materials to prepare the straw wood vinegar(SWV)at different pyrolysis tempera-tures by low temperature stage pyrolysis technology.The basic properties of SWV were determined.The antibacterial activity of SWV and the compound agents of the SWV and cantharidin solution were determined,respectively.The results showed that the total yield of SWV was respectively 20.92%and 18.75%and the optimum pyrolysis temperature was 180℃and 220℃for corn straw and for sesa-me straw within a set range of pyrolysis temperature,respectively.The antibacterial activity tests showed that the two kinds of compos-ite agents of straw wood vinegar and cantharidin had good broad-spectrum antibacterial activity.For Escherichia coli,the antibacterial activity was optimal when the volume ratio of corn SWV to cantharidin solution and the volume ratio of sesame SWV to cantharidin solu-tion were both 1∶2(220℃SWV).For Staphylococcus aureus,the best antibacterial activity was found when the volume ratio of corn SWV to cantharidin solution was 1∶8(180℃SWV)and when the volume ratio of sesame SWV to cantharidin solution was 1∶4(240℃SWV),respectively.The antibacterial activity of the compound agent of the SWV and cantharidin solution against Staphylo-coccus aureus was significantly superior to that of Escherichia coli.The SWV could obviously improve the antibacterial activity of can-tharidin solution.
作者
柴凤兰
张帆
王文辉
许兆斐
CHAI Feng-an;ZHANG Fan;WANG Wen-hui;XU Zhao-fei(Henan Technical Institute/Key Laboratory of Green Comprehensive Utilization of Straw Biomass of Kaifeng,Kaifeng 475001,Henan,China;School of Chemistry and Chemical Engineering,Henan University of Technology,Zhengzhou 450001,China)
出处
《湖北农业科学》
2024年第5期56-60,共5页
Hubei Agricultural Sciences
基金
河南省高等学校重点科研项目(21B150007)
开封市科技计划农业类科技攻关项目(220203)
河南应用技术职业学院创新人才支持计划项目(2021-RC-01)。
关键词
玉米
芝麻
秸秆木醋液
斑蝥原液
复合剂
抗菌活性
corn
sesame
straw wood vinegar(SWV)
cantharidin solution
compound agent
antibacterial activity
