文献类型：期刊文献

英文题名：Structural and thermodynamic factors in the adsorption process of anthocyanins from eggplant peel onto a carbon adsorbent

作者：Yang, Qiongjie[1];Wang, Conghui[1];Zhao, Zhuo[1];Wei, Wei[1];Ma, Jing[2];Qin, Guotong[2]

第一作者：Yang, Qiongjie

通讯作者：Wei, W[1]

机构：[1]Beijing Union Univ, Coll Biochem Engn, Beijing, Peoples R China;[2]Beihang Univ, Sch Space & Environm, Beijing 100086, 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, 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：2021

卷号：75

期号：11

起止页码：5687-5694

外文期刊名：CHEMICAL PAPERS

收录：;Scopus(收录号：2-s2.0-85108648753);WOS:【SCI-EXPANDED(收录号:WOS:000664396700001)】；

基金：This work was supported by the Natural Science Foundation of China (No. 51772031).

语种：英文

外文关键词：Anthocyanins; Eggplant peel; Carbon; Adsorption; Desorption

摘要：A simple method for the recovery of anthocyanins from eggplant peel by adsorption has been developed. Anthocyanins were extracted from eggplant peel and adsorbed onto three carbon adsorbents with different structures (C1, C2 and C3). The effects of the carbon pore size on the adsorption capacity were investigated. It was found that the size exclusion influenced the adsorption process. C1 had the best adsorption capability for eggplant peel anthocyanins due to its large pore size and high mesoporous volume and was used to purify eggplant peel anthocyanins. An equilibrium experiment showed that the isotherms of anthocyanins on C1 can be fitted well by Langmuir adsorption models. The kinetic rate was modeled using a pseudo-second-order model. Packed column experiments showed that the breakthrough point occurs when the load of the extract reached 16 bed volumes. The desorption was completely achieved with 5 bed volumes of 60% ethanol. The content of eggplant peel anthocyanin in the pigment product was 4.1% after one treatment. The findings indicate that carbon adsorbent with appropriate pore size and high mesoporous volume can be applied in the separation of anthocyanins from an aqueous solution.