Adsorption and desorption properties of macroporous resins for anthocyanins from the calyx extract of roselle (Hibiscus sabdariffa L.)

Journal of Agricultural and Food Chemistry
Xiu-Lian ChangPeng-Yuan Zhan

Abstract

Adsorption of roselle anthocynins, a natural pigment, onto various macroporous resins was optimized to develop a simple and efficient process for industrial separation and purification of roselle anthocyanins. Nine different macroporous resins (AB-8, X-5, HPD-100, SP-207, XAD-4, LS-305A, DM-21, LS-610B, and LS-305) were evaluated for the adsorption properties of the anthocyanins extracted from the calyx extract of Hibiscus sabdariffa L. The influences of phase contact time, solution pH, initial anthocyanin concentration, and ethanol concentration with different citric acid amounts were studied by the static adsorption/desorption method. The adsorption isotherm data were fitted well to the Langmuir isotherm, and according to this model, LS-610B and LS-305 exhibited the highest monolayer sorption capacities of 31.95 and 38.16 mg/g, respectively. The kinetic data were modeled using pseudo-first-order, pseudo-second-order, and intraparticle diffusion equations. The experimental data were well described by the pseudo-second-order kinetic model. Continuous column adsorption-regeneration cycles indicated negligible capacity loss of LS-305 during operation. The overall yield of pigment product was 49.6 mg/g dried calyces. The content o...Continue Reading

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Citations

Sep 12, 2013·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Boyan LiuBing Zhao
Jul 28, 2015·Food Chemistry·Mingzhu ZhuangGuowan Su
Apr 17, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xiaoyuan WangWei Zong
Aug 6, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jianfei LiuChang Chen
Jan 29, 2021·Analytical Methods : Advancing Methods and Applications·Li WangHongxin Wang
Sep 29, 2021·Journal of Agricultural and Food Chemistry·Yu WangXingbin Yang

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