Decoloration of chitosan by UV irradiation
Document Type
Article
Publication Date
8-1-2008
Abstract
Decoloration of chitosan by UV irradiation, which was used to replace a bleaching step during chitosan preparation, was evaluated under four separate treatments (effect of irradiation time, chitosan/water ratio, stirring speed, and UV light source). The optimal decoloration condition was defined as that producing white chitosan with higher viscosity. Decoloration of chitosan could be achieved effectively using a UV-C light by stirring unbleached chitosan in water (1:8, w/v) for 5 min at 120 rpm. UV irradiation applied under the optimal conditions could be used to produce chitosan with desirable white color (L* = 76.95, a* = -0.37, and b* = 14.04) and high viscosity (1301.7 mPa s at 0.5% w/v in 1.0% v/v acetic acid). © 2007 Elsevier Ltd. All rights reserved.
Publication Source (Journal or Book title)
Carbohydrate Polymers
First Page
384
Last Page
389
Recommended Citation
Youn, D., No, H., Kim, D., & Prinyawiwatkul, W. (2008). Decoloration of chitosan by UV irradiation. Carbohydrate Polymers, 73 (3), 384-389. https://doi.org/10.1016/j.carbpol.2007.12.003
