文献类型：期刊文献

英文题名：Structure and physicochemical properties of amphiphilic agar modified with octenyl succinic anhydride

作者：Chen, Huijing[1,3,4];Chen, Fuquan[1,3,4];Xiao, Qiong[1,3,4];Cai, Menghao[2];Yang, Qiuming[1,3,4];Weng, Huifen[1,3,4];Xiao, Anfeng[1,3,4]

机构：[1]Jimei Univ, Coll Food & Biol Engn, Xiamen 361021, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Natl R&D Ctr Red Alga Proc Technol, Xiamen 361021, Fujian, Peoples R China;[4]Fujian Prov Engn Technol Res Ctr Marine Funct Foo, Xiamen 361021, Fujian, Peoples R China

年份：2021

卷号：251

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20203809189257);WOS:【SCI-EXPANDED(收录号:WOS:000582801500045)】；

基金：This work was supported by Projects of National Natural Science Foundation of China (31501434), Science and Technology Program of Xiamen City (3502Z20183030), University-enterprise Cooperation of Fujian Province (2016N5008) and National Marine Economic Innovation and Development Demonstration Project (PD-HY-008). Moreover, thanks Yuan Zhou, Siying Ye and Yumeng Li for assisting in completing some experiments in the revision process.

语种：英文

外文关键词：Agar; Octenyl succinic anhydride; Characterization; Rheology

摘要：A novel amphiphilic agar with high transparency and freeze-thaw stability was prepared using octenyl succinic anhydride (OSA). Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy confirmed that the hydrophobic OS groups were successfully introduced in OSA-modified agar (OSAR) backbone. The OSAR showed higher emulsion stability and oil loading capacity than the native agar (NA). Compared with gel transparency (47.1 %), syneresis (42.1 %) of NA, OSAR exhibited high gel transparency (80 %) and low syneresis (3.3 %) when the degree of substitution (DS) was 0.06 and 0.12, respectively. Meanwhile, the OSAR showed a decreased interface tension and average molecular weight after modification. Thermogravimetric analysis indicated the thermal stability of OSAR was decreased, while texture profile analysis showed the springiness of the OSAR gel was enhanced. Dynamic rheology measurements revealed the OSAR with low gel strength displayed more liquid-like properties. Moreover, the OSAR exhibited lower turbidity and melting temperatures than the NA.