Paper Title:
Chitosan Pyruvic Acid Derivatives: Preparation, Moisture Absorption-Retention Ability and Antioxidative Activity
  Abstract

Chitosan pyruvic acid derivatives was successfully prepared from chitosan and pyruvic acid under reducing conditions, via aldimine formation. The chemical structure of the derivatives was proved by 13C NMR and IR. It was found ratio between glucose residues and pyruvic acid, reaction time, pH, and molecular weight of original chitosan had great influence on the degree of substitution (DS). N-(1-carboxyethyl) chitosan (N-CE-CTS) showed similar moisture absorption-retention curve and ability with HA, and much better ability than the original chitosan. Hydroxyl radical scavenging ratio of 4g/L chitosan and N-CE-CTS was 35.0% and 41.7%, respectively.

  Info
Periodical
Key Engineering Materials (Volumes 361-363)
Main Theme
Edited by
Guy Daculsi and Pierre Layrolle
Pages
963-966
DOI
10.4028/www.scientific.net/KEM.361-363.963
Citation
W. Yuan, X. Q. Yin, W.P. Tu, Q. Lin, Y. Cao, "Chitosan Pyruvic Acid Derivatives: Preparation, Moisture Absorption-Retention Ability and Antioxidative Activity", Key Engineering Materials, Vols. 361-363, pp. 963-966, 2008
Online since
November 2007
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$32.00
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