Li Yanbin, Zhao Weixue, Wang Yongchao, Xie Yumeng, Li Jiadong, He Jian, Wang Caiyun, De Souza Cristabelle, Zhang Lanwei, Lin Kai
State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
Meitek Technology (Qingdao) Co., Ltd, Qingdao 266400, China.
Int J Biol Macromol. 2025 Apr;303:140540. doi: 10.1016/j.ijbiomac.2025.140540. Epub 2025 Jan 31.
Algal oil is rich in docosahexaenoic acid, which is beneficial for infant development, but its susceptibility to oxidation necessitates microencapsulation. This study investigated the effects of incorporating varying ratios of octenyl succinic anhydride-modified starch (OSA-MS) into a base wall system comprising extensively hydrolyzed whey protein (eWPH) and maltodextrin (MD) to produce algal oil microcapsules with reduced allergenicity and high nutritional value, replacing whey protein isolate (WPI). The residual antigenicity of α-lactalbumin and β-lactoglobulin in eWPH was 3.60 % and 3.88 %, respectively. The addition of OSA-MS significantly enhanced emulsion stability in the eWPH/MD system for algal oil encapsulation. The highest microencapsulation efficiency (98.35 %) was achieved with 21 % OSA-MS, showing no significant difference from that of WPI/MD-based microcapsules. Furthermore, microcapsules prepared with eWPH/MD/OSA-MS (21 %) exhibited smooth surfaces, good dispersibility, and high solubility (91.79 %). These microcapsules also demonstrated superior oxidative stability after 18 days of storage at 60 °C compared to those with other OSA-MS ratios. Overall, incorporating OSA-MS into the eWPH/MD wall system achieved encapsulation performance comparable to WPI/MD, thereby broadening the application potential of eWPH in microencapsulation.
藻油富含二十二碳六烯酸，对婴儿发育有益，但其易氧化的特性使其有必要进行微胶囊化处理。本研究考察了将不同比例的辛烯基琥珀酸酐改性淀粉（OSA-MS）添加到由深度水解乳清蛋白（eWPH）和麦芽糊精（MD）组成的基础壁材体系中，以制备具有降低致敏性和高营养价值的藻油微胶囊，替代乳清蛋白分离物（WPI）的效果。eWPH中α-乳白蛋白和β-乳球蛋白的残留抗原性分别为3.60%和3.88%。添加OSA-MS显著提高了eWPH/MD体系中藻油包封的乳液稳定性。当OSA-MS含量为21%时，微胶囊化效率最高（98.35%），与基于WPI/MD的微胶囊相比无显著差异。此外，用eWPH/MD/OSA-MS（21%）制备的微胶囊表面光滑，分散性好，溶解度高（91.79%）。与其他OSA-MS比例的微胶囊相比，这些微胶囊在60℃储存18天后还表现出优异的氧化稳定性。总体而言，将OSA-MS引入eWPH/MD壁材体系实现了与WPI/MD相当的包封性能，从而拓宽了eWPH在微胶囊化中的应用潜力。
