核桃的化形式及其抗氧化作用的成熟诱导的变化:从内核和皮质的双重视图
Maokai Cui1, Runhong Mo1, Qingyang Li1
1Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, PR China.
Food chemistry: X
|September 17, 2024
概括
核桃的抗氧化活性和化合物在成熟过程中发生变化. 自由是最丰富的,随着核桃的成熟,它们的度会降低,影响其整体抗氧化能力.
科学领域:
- 农业科学 农业科学
- 食品科学 食品科学 食品科学
- 营养生物化学 营养生物化学
背景情况:
- 化合物对核桃的抗氧化特性有很大的贡献.
- 了解核桃在成熟过程中如何改变的概况对于优化收获和加工至关重要.
- 以前的研究还没有完全阐明在核桃发育过程中含量和抗氧化活性的动态.
研究的目的:
- 综合分析各个成熟阶段的核桃核和核桃中的 (自由,化,结合) 概况.
- 为了评估核桃成熟期间抗氧化活性的变化.
- 为了识别特定的化合物,敏感于成熟,并与抗氧化能力相关联.
主要方法:
- 超高性能液体色谱-并联质谱 (UPLC-MS/MS) 用于化合物的量化.
- 在体外抗氧化活性测定 (例如IC50测定).
- 坐标部分最小平方-区分分析 (OPLS-DA) 来识别成熟度敏感的化合物 (MSPs).
- 皮尔森相关性和生物信息学分析,将变化与抗氧化活性和代谢途径联系起来.
主要成果:
- 在核桃核 (44.57%) 和 (56.54%) 中,自由是主要的形式.
- 抗氧化能力随着成熟而显著下降,由增加的IC50值表明.
- 大多数单质和已识别的成熟度敏感 (MSPs) 的度随着核桃成熟而下降.
- 在MSP和抗氧化活性之间观察到强烈的正相关性 (r > 0.75,p < 0.05).
结论:
- 核桃的成分和抗氧化活性在成熟过程中经历了实质性的变化,随着水果的成熟,抗氧化能力总体下降.
- 特定的成熟度敏感 (MSPs) 是抗氧化活性观察到的变化的关键贡献者.
- 这些发现为优化核桃收获时间和加工提供了宝贵的见解,以最大限度地提高营养价值和抗氧化剂潜力.
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