Cheng Kaixing, Pan Yanmo, Han Zongyuan, Wang Zefu, Sun Qinxiu, Wei Shuai, Xia Qiuyu, Liu Yang, Liu Shucheng, Shao Jun-Hua
College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang 524088, China.
College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang 524088, China.
Food Chem. 2024 Feb 1;433:137323. doi: 10.1016/j.foodchem.2023.137323. Epub 2023 Sep 1.
Fish oils contain ω-3 polyunsaturated fatty acids (PUFAs), but easily cause quality deterioration due to the oxidation. Beeswax-based oleogels could wrap fish oils by beeswax self-assembly. The phase transition, crystal structure and non-covalent interaction were investigated to reveal the self-assembly mechanism from the perspective of beeswax and oil phase characteristics. The results indicated that high unsaturation degree, PUFAs and beeswax additions promoted phase transition, SFC and stable crystal networks. The changes of crystal structures were ascribed to the polymorphism and polymorphic transition. β-Polymorphs could form crystal networks, and β'-polymorphs could influence the size of crystal chains or clusters as well as crystalline domains. Crystalline domain sizes affected crystal morphologies and network structures, including plate-like structures and multi-layer porous structures. UFAs could involve the beeswax self-assembly to change structure characteristics by van der Waals forces and π-π stacking. The OBC remained 100%, when beeswax additions reached more than 6%. Hence, beeswax additions, PUFA contents and unsaturation degree all influenced the self-assembly mechanism and adjusted the macroscopic properties of oleogels.
鱼油含有ω-3多不饱和脂肪酸（PUFAs），但由于氧化作用容易导致质量劣化。基于蜂蜡的油凝胶可以通过蜂蜡自组装包裹鱼油。研究了相变、晶体结构和非共价相互作用，从蜂蜡和油相特性的角度揭示自组装机制。结果表明，高不饱和度、PUFAs和蜂蜡添加促进了相变、固体脂肪含量（SFC）和稳定的晶体网络。晶体结构的变化归因于多晶型和多晶型转变。β-多晶型物可以形成晶体网络，而β'-多晶型物可以影响晶体链或簇以及晶域的大小。晶域大小影响晶体形态和网络结构，包括板状结构和多层多孔结构。不饱和脂肪酸（UFAs）可以通过范德华力和π-π堆积参与蜂蜡自组装以改变结构特性。当蜂蜡添加量达到6%以上时，氧化诱导期（OBC）保持100%。因此，蜂蜡添加量、PUFA含量和不饱和度均影响自组装机制并调节油凝胶的宏观性质。
