陈琦,梁星迪,高伟,马倩云,王浩,田洪

• 1:河北农业大学食品科技学院
• 2:晨光生物科技集团股份有限公司
• 3:河北省植物资源综合利用重点实验室

摘要(Abstract)：

为解决国内猪油抗氧化体系单一成分效能不足的问题，该研究构建迷迭香提取物(RE)-维生素E(V_E)-茶多酚棕榈酸酯(TPP)(3∶4∶3)三元优化体系，探究其对猪油各氧化阶段的理化性质(酸价、过氧化值、丙二醛含量、茴香胺值)、脂肪酸含量、挥发性物质含量的影响。采用电子自旋共振(ESR)、差示扫描量热仪(DSC)分析猪油加热过程中的自由基含量变化和热氧化稳定性，并采用高效液相色谱(HPLC)检测3种抗氧化剂含量随加热时间增加的变化，探究复配抗氧化剂在氧化前、中、后各阶段的抗氧化机理。结果表明，该复配体系在抑制猪油氧化方面的效果与TBHQ相当，优于单一RE;该复配体系通过RE优先清除烷基自由基，V_E阻断过氧自由基链传递，TPP形成界面阻氧膜并螯合金属离子，三者协同实现“阻氧-淬灭自由基-再生循环”的多阶段、多靶点抑制，显著延缓猪油初级与次级氧化，提升氧化活化能约70.8%。该研究为天然复配抗氧化剂在高温油脂体系中的应用提供了理论依据与技术支撑。

关键词(KeyWords)： 迷迭香提取物;维生素E;茶多酚棕榈酸酯;复配抗氧化剂;协同机制;热氧化

Abstract:

Keywords:

基金项目(Foundation): 河北省植物资源综合利用重点实验室补助项目(22313014014)

作者(Author): 陈琦,梁星迪,高伟,马倩云,王浩,田洪

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