食品科学 ›› 2012, Vol. 33 ›› Issue (9): 47-49.doi: 10.7506/spkx1002-6630-201209010

• 基础研究 • 上一篇    下一篇

κ-卡拉胶与魔芋胶复配凝胶结构探讨

魏 玉1,王元兰2,*   

  1. 1.河南中医学院药学院 2.中南林业科技大学理学院
  • 出版日期:2012-05-15 发布日期:2012-05-07
  • 基金资助:
    中南林业科技大学高层次人才引进项目(104-0135)

Preliminary Study on Structure of κ-Carrageenan-Konjac Gum Blend Gels

WEI Yu1,WANG Yuan-lan2,*   

  1. (1. College of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450008, China; 2. College of Science, Central South University of Forestry and Technology, Changsha 410004, China)
  • Online:2012-05-15 Published:2012-05-07

摘要: 采用示差扫描量热仪(DSC)、红外光谱(FT-IR)及扫描电镜(SEM)对κ-卡拉胶与魔芋胶复配前后的结构进行初步探讨。结果表明:κ-卡拉胶与魔芋胶复配凝胶的-OH振动峰向低波数方向偏移;复配体系的DSC曲线吸热峰较单体胶所成峰峰形宽;SEM图像可清晰看到复配凝胶结构较单独κ-卡拉胶的致密。推测复配体系中形成了以κ-卡拉胶网络结构为主,魔芋胶分散其中的结构。

关键词: κ-卡拉胶, 魔芋胶, 复配凝胶, 结构探讨

Abstract: Structural analysis of κ-carrageenan, konjac gum, and their mixture at a mass ratio of 5.5:4.5 was carried out using DSC, FT-IR and SEM. The FT-IR results showed that hydroxyl group peak of κ-carrageenan and konjac gum shifted to lower wave number direction compared with their mixture. The DSC endothermic peak of κ-carrageenan-konjac gum mixture was wider than κ-carrageenan alone. SEM image showed that the morphology of the mixture gel was more compact than κ-carrageenan. Therefore, it was speculated that κ-carrageenan acted as the backbone of the mixed gel network system while konjac gum played a scattering role.

Key words: κ-carrageenan, konjac gum, gel blend, structure

中图分类号: