Combination of gum Arabic-gelatin complex coacervation with gelatin-xanthan gum complex gelation for the preparation of algal oil powders

作者：Huaiyue Sun, Xiaoyu Du, Cuiping Shi, Zi Ye, Xichang Wang, Wei Cai, Jian Zhong · 发表于：LWT · 年份：2025 · DOI：10.1016/j.lwt.2025.118692 · 被引用次数：3 · 研究领域：Microencapsulation and Drying Processes、Proteins in Food Systems、Pickering emulsions and particle stabilization

Complex coacervation of oppositely charged polymers is an important method to encapsulate oils and to prepare oil powders. Complex gelation has been applied to prepare oppositely charged polymer hydrogels. Herein, a combination method of gum Arabic (GA)-gelatin complex coacervation with gelatin-xanthan gum (XG) complex gelation was developed to prepare four types of algal oil powders with two kinds of gelatins (Type A gelatin: AG; Type B gelatin: BG): Algal oil@GA-AG, algal oil@GA-BG, algal oil@GA-AG-XG, and algal oil@GA-BG-XG powders. XG addition increased the sizes of the complex coacervates and oil powders. AG induced larger sizes of the complex coacervates and oil powders than BG. XG addition increased the algal oil oxidation, and AG induced higher algal oil oxidation than BG. AG induced lower free fatty acid (FFA) released percentages (e.g., 120 min: 80.2% vs. 87.9% for algal oil@GA-gelatin powders; 78.9% vs. 81.7% for algal oil@GA-gelatin-XG powders) than BG. The results would be beneficial for the understanding of the relationship between the wall material interaction and the properties of oil powders. • Complex coacervation and complex gelation were combined to prepare algal oil powders • Xanthan gum (XG) increased the particle sizes in the suspension and of the oil powders • Type A gelatin induced larger particle sizes of the oil powders than type B gelatin • XG decreased the peroxide values at 72 h in the Schaal oven (63°C) condition • XG decreased the effect differ...