文献类型：期刊文献

英文题名：Effective adsorption and concentration of carnosine by nickel species within mesoporous silica

作者：Zhu, Junying[1,2];Zhu, Xiangyang[3];Gu, Jinlou[3];Zhao, Liming[1,2];Jiang, Lihua[1,2];Qiu, Yongjun[1,2]

机构：[1]East China Univ Sci & Technol, R&D Ctr Separat & Extract Technol Fermentat Ind, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]Shanghai Collaborat Innovat Ctr Biomfg Technol, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2016

卷号：74

起止页码：211

外文期刊名：LWT-FOOD SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20163102650408);WOS:【SCI-EXPANDED(收录号:WOS:000383524300029)】；

基金：The authors would like to thank the National High Technology Research and Development Program of China (863 Program) (No. 2014AA021005 and 2014AA021202) for their financial support. And this work was also financial supported by Shandong Province Independent Innovation and Achievement Transformation Project (No. 2014ZZCX07205).

语种：英文

外文关键词：Histidine-containing dipeptides; Carnosine; Mesoporous silica; Adsorption; Separation

摘要：Carnosine (Car) abundantly exists in meat-derived wastes and has various functions with attractive application as food supplement. Therefore, it is of vital importance to recover Car from the low-value food stuff. Herein, carboxyl group functionalized mesoporous silica of SBA-15 was synthesized to facilely incorporating NiO, ZnO and CoO for Car extraction. Among these, Ni/SBA- 15 has the highest adsorption capability. The correlation between the most significant parameters was optimized, and the effects of these parameters on the adsorption efficiency of Car were investigated. Due to the adequate pore size and high Ni loading, the adsorption capacity of Car approached as high as 0.839 mmol/g. The excellent adsorption characteristics of the current adsorbents toward Car were preserved in a commonly used pH window and could be hardly infected by the background salts. The pseudo-second-order rate equation effectively described the uptake kinetics. The Langmuir model exhibited a better fit to adsorption isotherm than the Freundlich model. Therefore, nickel species within functionalized SBA-15 is a kind of efficient materials for recovering histidine-containing peptides from egg-laying hens and makes it a favorable candidate as chromatographic column materials for histidine-containing dipeptides analysis. (C) 2016 Elsevier Ltd. All rights reserved.