Nano-emulsification essential oil of Monarda didyma L. to improve its preservation effect on postharvest blueberry.

Yanxin Zhang, Jinlong Dai, Xiaoyun Ma, Chengguo Jia, Junyou Han, Chenggang Song, Yuqing Liu, Dongsheng Wei, Hongfei Xu, Jianchun Qin, Shengxiang Yang

Food chemistry 2023 Aug 15

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The reduction in blueberry harvest due to pathogen infection was reported to reach 80%. Essential oil (EO) can provide a new way to preserve blueberry. Here, in search for plants volatiles with preservation ability, a novel device was designed for the screening of aromatic plants led to the discovery of hit plant Monarda didyma L. Consequently, antifungi activity of M. didyma EO (MEO) and its nano-emulsion (MNE) were tested. 2 species of pathogenic fungi were isolated from blueberries, namely Alternaria sp. and Colletotrichum sp. were used as the target strains. In the in vitro activity test, the pathogenic were completely inhibited when the EO was 4 µL or 1.0 µL/mL. Compared with EO, MNE exhibited superior antimicrobial activity. Moreover, MNE can cause serious morphological changes and result in a decrease in the rot and weightlessness rate of blueberry. Hence, NME represents a promising agent for the preservation of postharvest blueberry. Copyright © 2023. Published by Elsevier Ltd.

Citation

Yanxin Zhang, Jinlong Dai, Xiaoyun Ma, Chengguo Jia, Junyou Han, Chenggang Song, Yuqing Liu, Dongsheng Wei, Hongfei Xu, Jianchun Qin, Shengxiang Yang. Nano-emulsification essential oil of Monarda didyma L. to improve its preservation effect on postharvest blueberry. Food chemistry. 2023 Aug 15;417:135880