基于强制渗透法制备天然水溶性壳聚糖的研究
Food and Fermentation Industries(2010)
Abstract
制备非衍生化高相对分子质量水溶性壳聚糖对材料创新及应用具有重要的意义。采用真空强制渗透法,使浓碱强制渗透入甲壳素颗粒的微孔中,加速甲壳素的溶胀以及NaOH的传质,形成近似均相的脱乙酰环境。通过控制脱乙酰度在50%左右,即可获得水溶性壳聚糖。表观黏度、红外光谱、X-射线衍射、差示扫描量热分析表明:制备的水溶性壳聚糖与传统壳聚糖无本质差异;所不同的是,强制渗透法制备的产品呈非晶态,分子间氢键作用较弱,因而具有良好的水溶性。
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Key words
homogeneous deacetylation,forced penetration,water-soluble chitosan,nonderived
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