Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 165, Issue -, Pages 506-516Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.09.141
Keywords
Chitosan; Gallic acid; Adsorption
Funding
- Science and Technology Major Project of Guangxi, China [AA17204034]
- Scientific Research and Technology Development Program of Guangxi, China [14122004-2]
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The presence of phenolic substances in sugarcane juice seriously affects the color value of sugar products. Magnetic chitosan (MCS) was prepared using an ionic cross-linking technique, and then was modified with arginine to prepare arginine-modified magnetic chitosan (AMCS) for use as a new sucrose clarifying adsorbent. Gallic acid (GA) is a representative phenolic substance andwas used to test the adsorption properties of the prepared AMCS. The adsorption kinetics indicated that the adsorption of GA on AMCS conformed to the pseudo-second-order model, the main adsorption mechanism was chemisorption. The Langmuir equation fit well and with good linearity, and indicated amaximumadsorption capacity of 48.38mg g(-1). The adsorption processwas consistent with monolayer adsorption and spontaneous endothermic process. The prepared AMCS exhibited excellent regenerability, and can effectively remove GA in sugarcane juice to improve product safety. (C) 2020 Elsevier B.V. All rights reserved.
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