摘要
壳聚糖(Cs)与甲基丙烯酸(MAA)在6γ0Co辐射源辐射下进行接枝共聚反应,制备了不同接枝率的共聚物,并用红外光谱(IR)和X射线衍射仪(XRD)进行了结构表征。以透明质酸(HA)、羧甲基壳聚糖(CM-Cs)为参照物,在一定相对湿度下考察了Cs、接枝共聚物(Cs-g-MAA)的保湿吸湿性能。实验结果表明:接枝共聚物钠盐(Cs-g-MAA1)的吸湿保湿性能最优,且接枝率越高吸湿保湿性能越好,完全可以替代透明质酸,作为食品的保湿剂。
Graft copolymers with different graft ratio were prepared by reaction of chitosan and methl acrylic acid under 60^Co radiation, and their structure was investigated by IR and XRD. By comparison with hyaluronic acid, carboxymethylchitosan, the moisture-adsorption and moisture-retention capacity of Cs and Cs-g-MAA were studied. The results indicate that Cs-g-MAA1 has the best capacity of moisture- adsorption and moisture-retention. Its capacity increases with the increase of graft ratio and can be used in food as a moisture-retention agent to substitute hyaluronic acid.
出处
《食品科技》
CAS
北大核心
2007年第5期53-56,共4页
Food Science and Technology
基金
国家自然科学基金项目(20366002-2)
广西区教育厅资助项目(2003-22)
广西大学科研基金项目(X051009)
关键词
壳聚糖
接枝共聚物
辐照
吸湿性
保湿性
chitosan
graft copolymer
radiation
moisture-absorption capacity
moisture-retention capacity