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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/16089

    Title: Preparation and characterization of water-soluble chitosan produced by Maillard reaction.
    Authors: 蔡政芳;Tsai, Cheng-Fang
    Contributors: 生物科技學系
    Keywords: chitosan;Maillard reaction;rheological property;solubility.
    Date: 2006
    Issue Date: 2012-11-23 17:08:25 (UTC+8)
    Abstract: "The objective of this research was to improve the solubility of chitosan by Maillard
    reaction with 1% chitosan and 2% reducing sugar (glucose or glucosamine) dissolved in 0.2 M acetic
    acid, which was adjusted to pH 6.0, and incubated at either 50°C or 70°C for 1–7 days. The physicochemical and rheological properties of the chitosan–saccharide derivatives were also investigated.
    Results indicated that the solubility of modified chitosan derivatives was significantly greater than that
    of native chitosan. The solubility of chitosan–glucosamine was higher than that of chitosan–glucose,
    and the chitosan–glucosamine derivative remained soluble at pH 10. The degree of deacetylation of
    the derivatives decreased with increasing reaction time. Rheological investigation revealed that the
    apparent viscosity of the water-soluble chitosan derivatives in aqueous solution depended upon system conditions such as pH, ionic strength, and solution temperature. The measured apparent viscosity
    decreased as all system conditions increased. As calculated by the Arrhenius equation, the activation
    energy (Ea) of the derivatives in aqueous solution generally decreased with increasing the extent of
    Maillard reaction with respect to the reducing sugars used."
    Appears in Collections:[生物科技學系] 期刊論文

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