The mechanism of preharvest treatment of polysaccharide from Lentinus edodes residue on inhibiting browning of postharvest Agaricus bisporus

文献类型： 外文期刊

第一作者： Liu, Huiqin

作者： Liu, Huiqin;Li, Wen;Liu, Peng;Chen, Wanchao;Zhang, Zhong;Yang, Yan;Liu, Huiqin;Li, Wen;Liu, Peng;Chen, Wanchao;Zhang, Zhong;Yang, Yan;Liu, Huiqin;Li, Jingjun

作者机构：

关键词： Polysaccharide; Preharvest treatment; Browning; Agaricus bisporus; Lentinula edodes residue

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.8； 五年影响因子：7.5 ）

ISSN： 0925-5214

年卷期： 2025 年 227 卷

页码：

收录情况： SCI

摘要： This study aims to elucidate the effect and mechanism of preharvest treatment of polysaccharide from Lentinus edodes residue (LE-UE) on delaying browning of postharvestAgaricus bisporus. The physiological and biochemical indexes related to cell membrane damage and enzymatic reactions of A. bisporus were investigated, as well as its transcriptomic sequencing and real-time quantitative reverse transcription. Results indicated that A. bisporus treated with 1.0 mg & sdot;mL-1 LE-UE before harvest exhibited decreased weight loss, increased firmness, a higher whiteness value and a lower degree of browning compared with untreated mushrooms. LE-UE preharvest treatment also decreased levels of MDA and ROS, increased total phenolics and flavonoids content, and improved activities of superoxide dismutase, peroxidase, catalase, and phenylalanine ammonia lyase, thereby maintaining integrity of cell membrane and retarding browning of A. bisporus. Meanwhile, LE-UE preharvest treatment inhibited activities of polyphenol oxidase and tyrosinase in enzymatic reactions to reduce synthesis of melanin, thus delaying browning of A. bisporus. At the molecular level, LE-UE preharvest treatment reduced ROS production and enhanced cell membrane integrity by upregulating the expression of gene FAH12 in fatty acid metabolism and gene CNBF2260 in glycerophospholipid metabolism pathway. Moreover, LE-UE preharvest treatment restrained the synthesis of melanin and brown pigment by suppressing gene PPO1 involved in biosynthesis of secondary metabolites. This study provides ideas for high-value utilization of L. edodes residue and scientific basis for the application of postharvest preservation technology for A. bisporus.

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