Successful removal of p-quinone with chitosan in an aqueous phase in relation to degree of deacetylation

Issue title: The Proceedings of the 3rd International Conference on Food Factors (ICoFF 03)

Article type: Research Article

Authors: Takahashi, Tomoki | Imai, Masanao | Suzuki, Isao

Affiliations: Laboratory of Food Chemical Engineering, Course in Bioresource Utilization Sciences, Graduate School of Bioresource Sciences, Nihon University 1866 Kameino, Fujisawa, Kanagawa-pref., 252-8510 Japan

Note: [] Corresponding author. Tel./Fax: +81 466 84 3978; E-mail: XLT05104@nifty.ne.jp

Abstract: Phenol oxidant is successfully removed by using chitosan particles in the aqueous phase. Removal of p-quinone by chitosan from crab shells was investigated kinetically from molecular weight (MW) of chitosan, deacetylation degree (DD) and reaction temperature. The rate constant assuming first-ordered reaction on removal of p-quinone in aqueous phase primarily depended on the MW of chitosan, not on the DD. Quantities of chitosan exceeding 5 × 10^{5} MW are able to obtain a sufficiently high rate constant (10^{-3} s^{-1}). At higher temperatures, higher rate constants were obtained in the entire experimental MW and DD. The activation energy obtained was 43.8 kJ·mol^{-1}.

Keywords: chitin and chitosan, deacetylation degree, phenol, p-quinone

Journal: BioFactors, vol. 21, no. 1-4, pp. 339-342, 2004