Novel Essential Oil-Based Thiosemicarbazone Compounds as Potential Fungicides in Controlling Postharvest Diseases of Citrus Fruit
文献类型： 外文期刊
作者： Zhang, Yonghua 1 ; Li, Lu 1 ; Li, Yafeng 1 ; Ouyang, Qiuli 1 ; Che, Jinxin 1 ; Chen, Xiumei 1 ; Ding, Shenghua 2 ; Wang, Rongrong 3 ; Tao, Nengguo 1 ;
作者机构： 1.Xiangtan Univ, Sch Chem Engn, Xiangtan 411105, Peoples R China
2.Hunan Acad Agr Sci, Dongting Lab, Hunan Agr Prod Proc Inst, Changsha 410125, Peoples R China
3.Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Peoples R China
关键词： (E)-2-((E)-oct-2-en-1-ylidene)-hydrazine-1-carbothioamide; antifungal activity; Penicillium digitatum; cell membrane; citrus fruit
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.2； 五年影响因子：6.4 ）
ISSN： 0021-8561
年卷期： 2024 年 72 卷 39 期
页码：
收录情况： SCI
摘要： To develop novel fungicides for controlling postharvest fungal diseases in citrus fruits, 12 essential oil (EO)-based thiosemicarbazones compounds, termed hydrazine-carbothioamide, were prepared according to the condensation method. In vitro assays showed that compound 13j exhibited the strongest antifungal activity (minimum inhibitory concentration [MIC] = minimum fungicidal concentration [MFC] = 0.0125 mg/mL) against Penicillium digitatum. An in vivo study revealed that 5 x MFC of compound 13j can effectively mitigate the green mold incidence of citrus fruit inoculated with P. digitatum, as well as fruit rot during natural storage, at a level comparable to that of the chemical fungicide prochloraz. Throughout this process, fruit quality was maintained. The hemolysis assay showed that these thiosemicarbazone compounds have good biocompatibility and that their safety is comparable to that of prochloraz. The antifungal activity of compound 13j was attributed to membrane damage, as confirmed using scanning electron microscopy (SEM), Calcofluor white (CFW) staining, propidium iodide (PI) staining, Fourier transform-infrared (FT-IR) spectroscopy, optical density (OD)260, and relative conductivity assays. Collectively, our results indicate that compound 13j can be used as an antifungal agent to control the postharvest decay of citrus fruits.
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