The effect of ergothioneine (EGT) on postharvest quality and possible browning mechanisms in button mushroom (Agaricus bisporus) was investigated. Mushrooms were sprayed with 0.12 mmol L ^− 1 EGT solution, and then stored at 4 °C for 17 d Results demonstrated that EGT treatment effectively delayed the decline of lightness (L*) value and firmness, maintained higher levels of total phenolics and ascorbic acid, and reduced browning degree, malondialdehyde (MDA) content and electrolyte leakage rate. However, EGT treatment had no significant effect on weight loss. Further investigations showed that EGT inhibited the activities of polyphenol oxidase (PPO), peroxidase (POD), phenylalanine ammonia lyase (PAL), catalase (CAT), and browning-related gene expression level, including AbPPO1, AbPPO3, AbPPO5, AbPAL1 and AbPAL2. The results from this research indicated that EGT treatment had potential effect on maintaining the postharvest quality and controlling browning in button mushroom.

研究了麦角硫因 (EGT) 对双孢蘑菇 ( Agaricus bisporus )采后品质的影响和可能的褐变机制。蘑菇喷洒 0.12 mmol L  ^{-  1}EGT 溶液，然后在 4°C 下储存 17 d 结果表明，EGT 处理有效地延缓了亮度 (L*) 值和硬度的下降，保持了较高的总酚类和抗坏血酸水平，并降低了褐变度、丙二醛 (MDA) ) 含量和电解液泄漏率。然而，EGT治疗对体重减轻没有显着影响。进一步研究表明，EGT抑制多酚氧化酶（PPO）、过氧化物酶（POD）、苯丙氨酸解氨酶（PAL）、过氧化氢酶（CAT）的活性，以及褐变相关基因表达水平，包括AbPPO1、AbPPO3、AbPPO5、AbPAL1和AbPAL2. 该研究的结果表明，EGT 处理对保持蘑菇采后质量和控制褐变具有潜在影响。