Trans-2-hexenal/beta-cyclodextrin effectively reduces green mold in citrus fruit

文献类型： 外文期刊

第一作者： Zhang, Yonghua

作者： Zhang, Yonghua;OuYang, Qiuli;Duan, Bin;Reymick, Okwong Oketch;Chen, Yue;Tan, Yuanzhen;Tao, Nengguo;Zhu, Xiangrong;Su, Donglin;Li, Gaoyang

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关键词： Citrus; Green mold; Inhibitory effect; Trans-2-hexenal-beta-cyclodextrin; Penicillium digitatum

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.751； 五年影响因子：7.001 ）

ISSN： 0925-5214

年卷期： 2022 年 187 卷

页码：

收录情况： SCI

摘要： Green mold, caused by Penicillium digitatum, is the primary postharvest disease in citrus fruit. Trans-2-hexenal was found to exert a considerable inhibitory effect on the mycelial growth of P. digitatum with a minimum fungicidal concentration (MFC) of 0.106 g L-1. To overcome its hydrophobic restriction, a trans-2-hexenal-beta-cyclodextrin inclusion complex (beta-CDIC) was prepared by the saturated aqueous solution method. In vitro assays revealed that the MFC of beta-CDIC for P. digitatum mycelial growth was 1.00 g L-1, and 10.0 g L-1 beta-CDIC apparently reduced the incidence of green mold in citrus fruit inoculated with P. digitatum while maintaining fruit quality. The structure of beta-CDIC was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), fourier transform-infrared spectroscopy (FT-IR), thermogravimetric (TG), and nuclear magnetic resonance (NMR) analyzes. The results showed that the H-1 proton of trans-2-hexenal correlated with the H-5' proton of beta-cyclodextrin (beta-CD), which was further confirmed by molecular docking analysis. The present study suggests that beta-CDIC is a promising candidate for controlling postharvest diseases in citrus fruit.

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