Preparation of the straw wood vinegar（SWV） and antibacterial activity of the SWV-cantharidin compound agent

doi:10.14088/j.cnki.issn0439-8114.2024.05.010

Abstract

Abstract: Corn and sesame stalks were used as raw materials to prepare the straw wood vinegar（SWV） at different pyrolysis temperatures 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 sesame straw within a set range of pyrolysis temperature, respectively. The antibacterial activity tests showed that the two kinds of composite 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 solution 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 Staphylococcus aureus was significantly superior to that of Escherichia coli. The SWV could obviously improve the antibacterial activity of cantharidin solution.

Key words: corn, sesame, straw wood vinegar（SWV）, cantharidin solution, compound agent, antibacterial activity

CLC Number:

CHAI Feng-lan, ZHANG Fan, WANG Wen-hui, XU Zhao-fei. Preparation of the straw wood vinegar（SWV） and antibacterial activity of the SWV-cantharidin compound agent[J]. HUBEI AGRICULTURAL SCIENCES, 2024, 63(5): 56-60.

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