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林产化学与工业 ›› 2002, Vol. 22 ›› Issue (2): 70-74.

• 研究报告 • 上一篇    下一篇

羧甲基魔芋葡甘聚糖/壳聚糖凝胶化性能研究

何东保, 石晓明, 石毅, 詹东风   

  1. 武汉大学, 资源与环境科学学院, 湖北, 武汉, 430072
  • 收稿日期:2001-09-15 修回日期:1900-01-01 出版日期:2002-06-30 发布日期:2002-06-30

STUDY ON GELATION PROPERTIES OF MIXED GEL OF CHITOSAN AND CARBOXYL METHYL KONJAC GLUCOMANNAN GUM

HE Dong-bao, SHI Xiao-ming, SHI Yi, ZHAN Dong-feng   

  1. College of Resource and Environmental Science, Wuhan University, Wuhan 430072, China
  • Received:2001-09-15 Revised:1900-01-01 Online:2002-06-30 Published:2002-06-30

摘要: 羧甲基魔芋葡甘聚糖/壳聚糖通过改变共混比例制备了混合凝胶,当多糖总质量分数为4%、盐离子浓度为1.6 mol·L-1时,羧甲基魔芋葡甘聚糖对壳聚糖的共混质量比为20/80,在70℃共混并恒温30 min,可达凝胶强度最大值;研究了制备温度、恒温时间、体系中盐离子浓度及壳聚糖粘均分子质量与脱乙酰度对凝胶化影响.同时从FT-IR谱图上分析了这两种多糖凝胶化作用机理.

关键词: 壳聚糖, 羧甲基魔芋葡甘聚糖, 凝胶化

Abstract: Mixed gels of chitosan and carboxyl methyl konjac glucomannan gum were prepared by varying the ratio of constituents.Mixed gel at 4% of total polysaccharide concentration showed a synergistic maximum when the ratio of carboxyl methyl konjac glucomannan gum to chitosan was 20/80.Effects of preparation temperature(Tp),incubation time,salt ion concentration,Mη and DD of chitosan on gelation have been studied.It has been observed that there was a gel strength maximum when incubation time was 30 min,salt ionic concentration was 1.6 mol·L-1.Mη and DD of chitosan was 8.0×105 and 85%,respectively.Mechanism of gelation was investigated by FT-IR spectrometry.

Key words: chitosan, carboxyl methyl konjac glucomannan, gelation

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