食品科学 ›› 2009, Vol. 30 ›› Issue (24): 197-201.doi: 10.7506/spkx1002-6630-200924042

• 工艺技术 • 上一篇    下一篇

不同分子量苹果果胶超滤法分离及其特性研究

田玉霞1,乔书涛2,仇农学1 ,* ,邓 红1,郭玉蓉1   

  1. 1.陕西师范大学食品工程与营养科学学院 2.西安理工大学机械与精密仪器工程学院
  • 收稿日期:2009-01-04 修回日期:2009-04-06 出版日期:2009-12-15 发布日期:2010-12-29
  • 通讯作者: 仇农学 E-mail:nongxueq@snnu.edu.cn
  • 基金资助:

    农业部现代苹果产业体系项目(nycytx-08);陕西师范大学优秀科技预研项目(200802020)

Characterization of Apple Pectin Fractionated by Ultrafiltration

TIAN Yu-xia1,QIAO Shu-tao2,QIU Nong-xue1,*,DENG Hong1,GUO Yu-rong1   

  1. 1. College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China;
    2. College of Mechanical Instrumental Engineering, Xi'an University of Technology, Xi'an 710062, China
  • Received:2009-01-04 Revised:2009-04-06 Online:2009-12-15 Published:2010-12-29
  • Contact: QIU Nong-xue1,*, E-mail:nongxueq@snnu.edu.cn

摘要:

对不同分子量的苹果果胶与其理化性质的关系进行研究,采用5 种不同截流分子量(MWCO)的超滤膜分离苹果果胶。结果表明:可分离出6 种不同分子量的苹果果胶,分子量大于30 万D 的果胶为其主要成分,分子量与其理化性质有着对应关系,各级果胶半乳糖醛酸含量和酯化度随分子量增大而增大,单糖组分也随分子量增大而增多;同时,超滤对果胶液的脱色有良好作用。

关键词: 苹果果胶, 超滤, 气相色谱

Abstract:

Five ultrafiltration membranes with different molecular weight cut-off (MWCO) were applied to fractionate apple pectin, and totally 6 fractions with different viscosity-average molecular weight were obtained, among which the viscosity average molecular weight of 68.04% apple pectin was above 300 kD. Meanwhile, molecular weight of pectin was related to its physico-chemical properties, and the galacturonic acid content and degree of esterification increased with the increase of the molecular weight.

Key words: apple pectin, ultrafiltration, GC

中图分类号: