文献类型：期刊文献

英文题名：Adsorption differences and mechanism of chitooligosaccharides with specific degree of polymerization on macroporous resins with different functional groups

作者：Hou, Yanying[1,2,3];Liu, Lujie[1,2];Zhang, Xingxing[1,2];Zhu, Yuechao[1,2];Qiu, Yongjun[1,2];Zhao, Liming[1,2,3,4]

机构：[1]East China Univ Sci & Technol, Sch Biotechnol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]Shanghai Collaborat Innovat Ctr Biomfg Technol SCI, Shanghai 200237, Peoples R China;[3]Shanghai Frontiers Sci Ctr Optogenet Tech Cell Met, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, R&D Ctr Separat & Extract Technol Fermentat Ind, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：115

起止页码：416

外文期刊名：JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY

收录：;EI(收录号：20223812778868);WOS:【SCI-EXPANDED(收录号:WOS:000893049500010)】；

基金：This work was supported by the National Key R & D Program of China (2019YFD0901805) , the 111 Project (B18022) , the Fundamental Research Funds for the Central Universities, the Open Project Funding of the State Key Laboratory of Bioreactor Engineering, ECUST (ZDXM2019) , and Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism (Shanghai Municipal Education Commission) .

语种：英文

外文关键词：Chitooligosaccharides; Ion-exchange resin; Functional group; Adsorption

摘要：Ion exchange resins are promising materials for separating chitooligosaccharides (COSs) with different degrees of polymerization (DP). The adsorbent functional groups significantly determine the interactions with COSs and affect their adsorption and separation efficiency. This study investigated the adsorption behaviors of COSs on macroporous cation exchange resins with different functional groups to clarify the functional group effect on the adsorption of COSs with different DP, which can also help to provide a theoretical basis for the selection of separation medium and optimization of the separation technics of COSs. The results showed that the adsorption of COSs on sulfonic-acid type resin DX-10 and carboxylic-acid type resin DC-10 were favorable, and the adsorption isotherms were in accord with the Sips model. Adsorption thermodynamics showed that temperature had opposite effects on the two resins' equilibrium adsorption capacity of COSs. The diffusion coefficient of COSs on DX-10 resin was greater, and the affinity gap between COSs on DX-10 resin was larger than that of DC-10 resin, which is beneficial for improving the separation resolution of COSs. In contrast, the interaction energy between COSs with high DP and DC-10 resin was weaker compared with DX-10, which made the elution of COSs with high DP easier.(c) 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.