Optimized preparation of tea tree oil complexation and their antifungal activity against Botrytis cinerea

文献类型： 外文期刊

第一作者： Yue, Qiang

作者： Yue, Qiang;Shao, Xingfeng;Wei, Yingying;Jiang, Shu;Xu, Feng;Wang, Hongfei;Gao, Haiyan

作者机构：

关键词： Melaleuca alternifolia; beta-Cyclodextrin; Complexation; Antifungal activity

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：5.537； 五年影响因子：5.821 ）

ISSN： 0925-5214

年卷期： 2020 年 162 卷

页码：

收录情况： SCI

摘要： Tea tree oil (TTO) inclusion complexes were prepared by co-precipitation with beta-cyclodextrin (beta-CD). After the complexation protocol was optimized using response surface methodology, the physicochemical and anti-fungal properties of the TTO-beta-CD inclusion complex were investigated. The optimal complexation time (4 h), temperature (62 degrees C), and beta-CD/TTO mass ratio (7), provided a TTO complexation efficiency of 87.47 %. Fourier transform infrared spectroscopy showed that the spectra of TTO complexations and beta-CD are quite similar, suggesting that TTO molecules enter beta-CD cavities during the formation of inclusion complexes. Scanning electron micrographs revealed that particles of TTO-beta-CD complexes are smoother and smaller than the amorphous structures of beta-CD. Thermogravimetric analysis demonstrated that the thermal stability of TTO is enhanced after complexation with beta-CD, which reduces TTO volatility and oxidation. Complexed TTO inhibit mycelial growth of B. cinerea in a dose-dependent manner in vitro. In cherry tomato fruit, complexed TTO can control artificially-induced B. cinerea infection and extend shelf life. It was concluded that TTO complexation might be benefit for the commercial application of TTO to control the postharvest grey mold of fruits.

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