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C. Wischke and H. Borchert, “Increased Sensitivity of Chitosan Determination by a Dye Binding Method,” Carbohydrate Research, Vol. 341, No. 18, 2006, pp. 2978-2979.

has been cited by the following article:

• TITLE: A Simple Colorimetric Method for the Evaluation of Chitosan

  AUTHORS: Mohamed Abou-Shoer

  KEYWORDS: Chitosan, Dye, Colorimetric, Bromocresol Purple

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.1 No.2, September 14, 2010

  ABSTRACT: A simple sensitive and rapid colorimetric method has been developed, and herein described, for the qualitative and quantitative chemical assessment of the commercially available chitosan products. The described method relies on the reactivity of the basic amino function of chitosan with the acid dye bromocresol purple. The applied technique allows assessment of variability and selectivity changes in the quality of the marketed chitosan products.