商业酒中的叶酸含量和稳定性:与烯酸化合物的相关性
Jinxian Zheng1, Weiming Huang1, Yuting Li1
1Engineering Research Center of Health Food Design & Nutrition Regulation, Dongguan Key Laboratory of Typical Food Precision Design, China National Light Industry Key Laboratory of Healthy Food Development and Nutrition Regulation, School of Life and Health Technology, Dongguan University of Technology, Dongguan 523808, China.
酒含有大量的叶酸,主要是以5-甲基四基叶酸 (5-MTHF) 的形式. 酒中较高的醇含量在消化过程中增强了叶酸的稳定性,但储存会导致降解,影响营养价值.
科学领域:
- 食品科学 食品科学 食品科学
- 营养生物化学 营养生物化学
- 分析化学 分析化学
背景情况:
- 叶酸是各种生理过程中至关重要的必需营养素.
- 酒是一种流行的饮料,其复杂的基质含有各种微量营养素和植物化学物质.
- 了解酒中的叶酸含量和稳定性对于评估其营养贡献至关重要.
研究的目的:
- 量化叶酸水平,并确定商业酒中占主导地位的形式.
- 调查化合物在体外消化和储存期间对叶酸稳定性的影响.
- 探索酒类型,醇含量和叶酸稳定性之间的关系.
主要方法:
- 使用UHPLC-Q-TOF-MS/MS进行精确的叶酸量化.
- 分析了来自当地市场的16个商业酒样本.
- 采用主要成分分析来将酒的特征与叶酸水平相关联.
- 进行了体外消化和加速储存研究 (60°C,10天),以评估叶酸的稳定性.
主要成果:
- 叶酸总含量在35.0至199.6μg/L之间,其中5-甲基四基叶酸 (5-MTHF) 是主导形式 (21-70%).
- 较高的含量与叶酸水平呈正相关性,并在体外消化过程中增强叶酸稳定性,特别是在酒中.
- 在加速储存期间,无论含量如何,都发生了显著的叶酸降解,而抗氧化能力下降.
结论:
- 酒叶酸的含量各不相同,主要形式是5-MTHF.
- 化合物在消化过程中起到保护叶酸的作用,但在长期储存期间没有显著作用.
- 酒中的叶酸稳定性受到矩阵组成和储存条件的影响,影响其营养价值.
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