脂质诱导的氧化修饰降低了鱼皮中的原化物生物活性:基于蛋白质组策略的潜在机制
Fengjie Gou1, Song Gao1, Bo Li1
1Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
Foods (Basel, Switzerland)
|February 24, 2024
概括
原蛋白酸是一种原蛋白酸.
科学领域:
- 生物化学 生物化学
- 食品科学 食品科学 食品科学
背景情况:
- 原蛋白具有宝贵的生物活性,如抗氧化和ACE抑制.
- 储存期间的氧化恶化会减少这些生物活性.
- 在氧化过程中生物活性的降解途径尚不清楚.
研究的目的:
- 在脂质加速氧化储存过程中研究原的氧化水平和生物活性.
- 阐明原氧化过程中的动态变化及其对生物活性的影响.
- 识别特定易氧化的氨基酸及其修改类型.
主要方法:
- 使用脂质诱导原蛋白中的氧化.
- 监测氧化标记物,如碳酸含量,希夫基和迪铁素.
- 评估生物活性,包括抗氧化和抑制 ангиотензин转化酶 (ACE).
- 进行氨基酸和蛋白质组分析以确定氧化残留物.
主要成果:
- 原蛋白氧化发生在三个不同的阶段.
- 早期的氧化 (碳酸含量增加) 与抗氧化和ACE抑制的减少有很强的相关性.
- 后期的氧化 (增加希夫基和dityrosine) 也与减少的生物活性相关.
- 甲氨酸,氨酸和氨酸被确定为氧化敏感的氨基酸.
结论:
- 氧化修饰动态改变原蛋白的生物活性.
- 了解这些氧化变化对于在储存期间保持的功能至关重要.
- 这项研究提供了对影响原蛋白生物活性的特定氧化变化的见解.
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