Study on the antioxidative mechanism of tocopherol loaded ethyl cellulose particles in thermal-oxidized soybean oil
Study on the antioxidative mechanism of tocopherol loaded ethyl cellulose particles in thermal-oxidized soybean oil
复制标题
热氧化大豆油中负载生育酚的乙基纤维素颗粒的抗氧化机理研究
DOI：
10.1016/j.carbpol.2021.118734
复制
发表时间：
2021-10-16
影响因子：
11.2
通讯作者：
Huang, Shengquan
中科院分区：
文献类型：
--
作者：
Liu, Ying;Ma, Xin;Huang, Shengquan
由于生育酚在高温下不稳定，我们提出了制备负载生育酚的乙基纤维素颗粒作为抗氧化剂。本研究的目的是探讨负载颗粒的抗氧化机制。结果表明，不同粘度EC（EC 9、EC 70、EC 200）制备的负载微粒均具有抗氧化作用，且抗氧化活性随EC粘度的增加而增加。傅立叶红外光谱分析表明，维生素C与生育酚之间的相互作用主要是氢键。负载颗粒有效地保留了TOC的热降解，从而提高了抗氧化活性。进一步研究EC的热氧化行为，推测其可能的抗氧化机制包括两个方面.一种是将TOC固定在EC形成的负载颗粒的网络结构中，为避免降解提供屏障。EC和TOC作用于脂质氧化的不同阶段，共同发挥抗氧化作用。
Our previous study proposed preparation method of tocopherol (Toc) loaded ethyl cellulose (EC) particles as antioxidant due to instability of Toc under high temperature. The present study aimed to explore the antioxidant mechanism of loaded particles. Results showed that loaded particles prepared by EC of different viscosities (EC9, EC70, EC200) had antioxidative effect, and the antioxidant activity increased with EC viscosity. Fourier transform infrared analysis demonstrated that the interaction between EC and tocopherol was mainly hydrogen bond. Loaded particles retained effectively the thermal degradation of Toc and thus enhanced the antioxidant activity. Further investigation into thermal oxidation of EC inferred the possible antioxidative mechanism included two aspects. One was that Toc was fixed in the network structure of loaded particles formed by EC to provide a barrier for avoiding degradation. Another was that EC and Toc acted on different stages of lipid oxidation, playing the antioxidative effect together.