Decolorization of Corn Fiber Arabinoxylan Extract with (MN102) Resin: Adsorption Performance and Film-Forming...

Area of Science:

• * Biopolymer valorization and byproduct utilization.
• * Adsorption science and separation technologies.

Background:

• * Arabinoxylan from corn fiber is a low-value byproduct with film-forming potential.
• * Its dark color limits applications; decolorization is necessary.
• * Resin MN102 is investigated for colored compound adsorption.

Purpose of the Study:

• * To evaluate the efficacy of resin MN102 in decolorizing arabinoxylan extract.
• * To analyze adsorption kinetics and isotherm models.
• * To assess the impact of flow rate on decolorization in a fixed-bed column.
• * To determine if film-forming properties are retained post-decolorization.

Main Methods:

• * Adsorption experiments using resin MN102 to remove colored compounds.
• * Evaluation of adsorption/desorption cycles for resin reusability.
• * Fitting adsorption isotherm data to Langmuir and Freundlich models.
• * Fixed-bed column studies to determine breakthrough curves and model fitting (Yan, log-Gompertz).
• * Assessment of decolorized extract's film-forming properties (color, solubility, mechanical).

Main Results:

• * Resin MN102 effectively adsorbed colored compounds from arabinoxylan extract.
• * The Freundlich model best described the adsorption isotherm.
• * Resin efficiency remained significant after multiple adsorption/desorption cycles (initial 63.3% to 52.9% after four cycles).
• * Yan and log-Gompertz models accurately predicted breakthrough curves in the fixed-bed column.
• * Decolorized arabinoxylan retained its film-forming capabilities.

Conclusions:

• * Resin MN102 is a viable adsorbent for decolorizing corn fiber arabinoxylan extract.
• * The process is effective and the resin shows good reusability.
• * Decolorization does not compromise the valuable film-forming properties of arabinoxylan.
• * This research offers a pathway for valorizing corn fiber byproducts.