文献类型：期刊文献

英文题名：Gelatin Improve Storage Stability of Alginate-Encapsuled Krill Oil Microcapsules

作者：Ma, Xuan[1];Heng, Jiangying[1];Zhang, Xian[2];Zhang, Zhihua[2];Sun, Hongshuai[3];Wei, Yiming[1];He, Yi[1];Liu, Bo[1];Zhang, Yu[1];Jin, Jing[1];Wei, Tao[1];Zhao, Zhuo[1];Yan, Wenjie[1,4];Wang, Feng[1]

第一作者：Ma, Xuan

通讯作者：Wang, F[1]

机构：[1]Beijing Union Univ, Coll Biochem Engn, Beijing 100101, Peoples R China;[2]Minist Agr, China Green Food Dev Ctr, Beijing 100101, Peoples R China;[3]Weifang Hairun Huachen Testing Technol Co Ltd, Weifang 261061, Peoples R China;[4]Beijing Union Univ, Beijing Key Lab Bioact Subst & Funct Food, Beijing 100101, Peoples R China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Coll Biochem Engn, Beijing 100101, Peoples R China.|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

年份：2026

卷号：15

期号：4

外文期刊名：FOODS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001702289400001)】；

基金：This research was funded by the National Key Research and Development Program of China (2023YFF1103804) and the Academic Research Projects of Beijing Union University (No. ZK20202516).

语种：英文

外文关键词：antarctic krill oil (AKO); encapsulation; sodium alginate (ALG); gelatin (GLN); storage stability

摘要：Antarctic krill oil (AKO) is a valuable nutraceutical; however, it is highly susceptible to oxidation. Encapsulation represents an effective strategy to enhance the storage stability of AKO. This study explored a novel approach for encapsulating AKO using sodium alginate (ALG) and gelatin (GLN) to improve its stability, and multiple parameters were systematically evaluated, including oil-loading efficiency, surface oil content, particle size, water activity, and thermal stability. Additionally, core-material retention efficiency, acid value, peroxide value, and anisidine value were measured after accelerated oxidation. The results demonstrated that the optimal encapsulation conditions consisted of an ALG:GLN ratio of 2:1, a 9% CaCl2 coagulation bath, 750 mu m nozzle size, followed by freeze-drying. Under these conditions, the microcapsules achieved an oil-loading efficiency of 62.63% and a surface oil content of 19.21%. The water activity of the microcapsules was 0.516. Thermogravimetric analysis indicated that AKO microcapsules encapsulated with ALG/GLN exhibited higher thermal stability (similar to 300 degrees C) compared to those encapsulated with ALG alone (similar to 280 degrees C). When AKO or its microcapsules were subjected to accelerated oxidation at 65 degrees C, compared to ALG-encapsulation alone, the ALG/GLN encapsulation system significantly reduced the oxidation indicators of the oil, such as acid value (24%), peroxide value (26%), and anisidine value (28%). In conclusion, incorporating GLN into ALG-based microcapsules significantly enhanced the antioxidant capacity of AKO and prolonged its shelf life.