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Pulsed light reduces postharvest losses of Chinese bayberries by affecting fungal microbiota during cold storage

文献类型： 外文期刊

作者： Wang, Yan 1 ; Zheng, Yong 1 ; Shang, Jie 1 ; Wu, Di 2 ; Zhou, Aiyun 1 ; Cai, Ming 1 ; Gao, Haiyan 3 ; Yang, Kai 1 ;

作者机构： 1.Zhejiang Univ Technol, Coll Food Sci & Technol, Hangzhou 310014, Peoples R China

2.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310058, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Food Sci, Hangzhou 310021, Peoples R China

关键词： Postharvest losses; Pulsed light; Chinese bayberries; Fungal microbiota; Polyphenol oxidase; Phenylalanine ammonia-lyase

期刊名称：FOOD CONTROL （ 影响因子：6.0； 五年影响因子：5.8 ）

ISSN： 0956-7135

年卷期： 2023 年 146 卷

页码：

收录情况： SCI

摘要： Non-thermal sterilization technology is considered a safe and effective approach in controlling postharvest losses of fruit. In this study, the effects of pulsed light (PL) on qualities of Chinese bayberries during storage at 10 degrees C, 95% RH for 12 d were investigated. At the same time, high-throughput sequencing was operated to identify fungal microbiota on Chinese bayberries. The results showed that PL treatment could inhibit the decay incidence and polyphenol oxidase (PPO) activity, maintain fruit firmness and enhance phenylalanine ammonia-lyase (PAL) activity, with no effect on titratable acid (TA), total soluble solids (TSS), malondialdehyde (MDA) content and superoxide dismutase (SOD) activity. Additionally, the PL treatment maintained alpha diversity and altered beta diversity. At the species level, the abundance of Monographella nivalis and Colletotrichum cordylinicota were reduced in PL samples, while Hanseniaspora uvarum and Diaporthe spp were enriched. M. nivalis and C. cordylinicota were positively correlated with weight loss and decay index according to canonical correspon-dence analysis (CCA). The data of microbial correlation network indicated that PL treatment reduced pathogenic fungal microbiotas and made fungal community more complex and steadier. This study demonstrated that PL affects fungal community by inhibiting plant pathogens, increasing the amounts of endophytes and consolidating microbial networks. It provides new insights into the dynamics of the microbiome of Chinese bayberries after PL treatment.

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