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Updated: Feb 9, 2026

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ε-Poly-l-lysine通过影响氧化应激,AsA-GSH循环和膜脂成分来延迟激情果腐烂的发展
Yuzhao Lin1, Hongbin Chen2, Qianyu Wang1
1College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, Fujian, 362000, China.
Plant physiology and biochemistry : PPB
|February 7, 2026
概括
抗真菌的e-PL有效地延迟了由Lasiodiplodia theobromae引起的激情果腐烂. 它通过减少氧化应激和保持细胞膜完整性来起作用.
科学领域:
- 植物病理学 植物病理学
- 菌类学 菌类学是指菌类学.
- 食品科学 食品科学 食品科学
背景情况:
- 拉西奥迪普洛迪亚 (Lasiodiplodia theobromae) 导致激情果的大量收获后果腐烂.
- ε-Polylysine (ε-PL) 是一种已知有效的抗真菌剂,具有水果保存潜力.
研究的目的:
- 研究e-PL对L. theobromae诱导的激情果腐烂的保护机制.
- 评估e-PL对氧化应激,甲酸盐-谷氨 (AsA-GSH) 循环和膜脂成分的影响.
主要方法:
- 评估用e-PL.治疗的激情果的病变直径和疾病指数.
- 测量反应性氧物种 (ROS),脂质过氧化 (MDA),抗氧化酶活性 (SOD,CAT,POD) 和/黄含量.
- 分析AsA-GSH循环酶活动和代谢物水平 (GSH,GSSG,AsA,DHA).
- 量化膜脂质成分 (USFAs,SFAs,PI,PC) 和相关的酶活动.
主要成果:
- ε-PL显著减少了病变直径和疾病指数,延迟了腐烂的开始.
- ε-PL降低了活性氧物种 (O2•−,H2O2) 和MDA水平,同时提高了抗氧化酶的活动.
- ε-PL增强了AsA-GSH循环活性,并增加了减少的谷氨 (GSH) 和酸 (AsA) 的水平.
- ε-PL增加了不和脂肪酸 (USFAs) 和脂 (PC),同时减少了和脂肪酸 (SFAs) 和修改了脂质修饰酶活动.
结论:
- ε-PL有效地减轻L. theobromae引起的激情果腐烂.
- 保护作用归因于通过AsA-GSH循环增强抗氧化防御和改善细胞膜完整性.
- ε-PL代表了一种有希望的策略,用于收获后保护激情果免受真菌腐烂.
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