Chen Lijia, Zhang Wenjie, Bian Qiqi, Wang Xichang, Zhong Jian
Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Department of Clinical Nutrition, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
NPJ Sci Food. 2025 May 19;9(1):80. doi: 10.1038/s41538-025-00448-1.
The application of fish oil is limited by its unpleasant fishy flavour, sensitivity to environments (e.g., oxygen, light, and heat), and poor water solubility. The complex coacervation-based encapsulation of fish oil in powders is a promising method to improve the behavior of fish oil in food science and engineering. Controlled preparation of fish oil powders has become an important topic in improving their properties. Herein, the fish oil-encapsulated powders were controlled prepared by combining a fish gelatin (FG)-alginate complex coacervation method with an intra-particulate genipin-crosslinking method. The genipin crosslinking did not affect the particle morphologies, moisture contents, and fish oil encapsulation ability. However, it did affect other physicochemical properties, fish oil oxidation ability, and in vitro digestion behaviors. Especially, the genipin-to-FG mass ratio of 1.0% induced the lowest water activity (0.45 ± 0.01), highest tapped density (0.107 ± 0.007 g/cm), highest Carr indexes (58% ± 2%), highest Hausner ratios (2.43 ± 0.13), lowest peak value (636.0 ± 10.0 μm) of the powder sizes, and lowest peroxide peak value (442 ± 3 mmol/kg oil). This work provided useful information to understand the relationship between genipin modification and the properties of the fish oil-encapsulated powders.
鱼油的应用受到其难闻的鱼腥味、对环境（如氧气、光线和热量）的敏感性以及较差的水溶性的限制。基于复凝聚法将鱼油包封在粉末中是一种在食品科学与工程领域改善鱼油性能的有前景的方法。控制制备鱼油粉末已成为改善其性能的一个重要课题。在此，通过将鱼明胶（FG）-海藻酸盐复凝聚法与颗粒内京尼平交联法相结合，控制制备了鱼油包封粉末。京尼平交联不影响颗粒形态、水分含量和鱼油包封能力。然而，它确实影响了其他物理化学性质、鱼油氧化能力和体外消化行为。特别是，京尼平与FG的质量比为1.0%时，诱导出最低的水分活度（0.45±0.01）、最高的振实密度（0.107±0.007 g/cm）、最高的卡尔指数（58%±2%）、最高的豪斯纳比（2.43±0.13）、粉末尺寸的最低峰值（636.0±10.0μm）和最低的过氧化物峰值（442±3 mmol/kg油）。这项工作为理解京尼平改性与鱼油包封粉末性能之间的关系提供了有用信息。
