亚麻油中含有托芬的LO的稳定性及其对γ-托科菲罗尔的反应
Wan-Zhen Li1, Zi-Liang Song1, Jun-le Li1
1Guangdong Saskatchewan Oilseed Joint Laboratory, Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China.
Food chemistry
|March 26, 2024
概括
松 (LOs) 和-托科菲罗尔 (γ-T) 影响亚麻油的质量. γ-T最初抑制,然后促进LO氧化,影响油的稳定性和感觉性质.
科学领域:
- 食品化学 食品化学
- 氧化研究 氧化研究
- 亚麻油分析 亚麻油分析
背景情况:
- 线性吸收物 (LOs) 是影响亚麻油质量和感官属性的关键成分.
- 含有Trp的LO表现出独特的氧化行为,特别是在存在玛-托科菲罗尔 (γ-T) 的情况下.
研究的目的:
- 调查在亚麻油储存期间LOs和γ-T之间的相互作用.
- 阐明LOs和γ-T在亚麻油内源性抗氧化系统中的作用.
主要方法:
- 使用吸收来隔离和重新引入极分数 (LO 和 γ-T) 进入油基质.
- 通过测量p-anisidine值来评估氧化稳定性.
- 用LC-MS/MS分析和模拟来研究氧化产品和分子相互作用.
主要成果:
- LOs将p-anisidine值降低了18.49%,表明了抗氧化活性.
- 与γ-T相结合的LOs提供了最显著的内源性抗氧化作用.
- γ-T调节的含有Trp的LO氧化,最初抑制它,但在后期阶段 (MetO形式) 促进它.
- 氧化导致CLD分裂成片,Meto和Trp残留物之间的接近促进了反应.
结论:
- LOs和γ-T在亚麻油的氧化稳定性和感官特性中发挥着关键作用.
- LOs和γ-T之间的相互作用是复杂的,涉及阶段依赖的氧化调制.
- 甲胺硫氧化物和托残留物之间的分子邻近性和反应有助于LO降解,这是一个由γ-T增强的过程.
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