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- Title
Modeling of the Adsorption/Desorption Characteristics and Properties of Anthocyanins from Extruded Red Cabbage Juice by Macroporous Adsorbent Resin.
- Authors
Zhang, Pingjing; Wang, Liping; Fang, Sheng
- Abstract
The adsorption/desorption characteristics, modeling and properties of anthocyanins from extruded red cabbage juice by macroporous resins were investigated. The static adsorption and desorption capacities of red cabbage anthocyanins on five macroporous resins were measured and compared. The X-5 resin showed the best capacities and was selected for the adsorption kinetics, isotherms and elution studies. The pseudo-second-order kinetic model and Langmuir isotherm model were used to describe the adsorption process and mechanism. Dynamic adsorption and desorption tests were performed on a fixed-bed column, and the loading and eluent conditions were optimized. The purity of anthocyanins in freeze-dried purified powder by the resin adsorption process is 21.3 ± 0.9 wt % and shows better stability in the air than the unpurified one. Finally, the antioxidant activity and color properties including color density, color intensity, color tonality and degradation index of the purified powders were measured.
- Subjects
ANTHOCYANINS; GUMS &; resins; ADSORPTION (Biology); LANGMUIR isotherms; ANTIOXIDANTS
- Publication
International Journal of Food Engineering, 2019, Vol 15, Issue 1/2, pN.PAG
- ISSN
1556-3758
- Publication type
Article
- DOI
10.1515/ijfe-2018-0239