食品科学 ›› 2012, Vol. 33 ›› Issue (11): 35-38.doi: 10.7506/spkx1002-6630-201211008

• 基础研究 • 上一篇    下一篇

不同因素对茶多糖凝胶特性的影响

陈旭平,谢 怡,邓刘蒙子,黄雪松*   

  1. 暨南大学理工学院食品科学与工程系
  • 出版日期:2012-06-15 发布日期:2012-07-27
  • 基金资助:
    暨南大学食品系日康大学生创新基金项目(RK:201001)

Effects of Different Factors on Gel Characteristics of Tea Polysaccharides

CHEN Xu-ping,XIE Yi,DENG Liu-meng-zi,HUANG Xue-song*   

  1. (Department of Food Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou 510632, China)
  • Online:2012-06-15 Published:2012-07-27

摘要: 采用质构仪测定不同质量浓度、加热温度、保温及放置时间、pH值、钙离子浓度等对茶多糖的凝胶强度、胶黏性、咀嚼性、弹性、内聚性等的影响。结果表明:能形成茶多糖凝胶的条件是茶多糖质量浓度不低于5mg/mL、保温温度不低于50℃;茶多糖凝胶强度与质量浓度、加热温度成正比,放置时间过长、酸性或碱性过强都会降低其凝胶强度,钙离子对茶多糖凝胶的形成没有促进作用。

关键词: 茶多糖, 凝胶特性, 质构分析, 凝胶强度

Abstract: A texture analyzer was used to test the gel strength, gumminess, chewiness, adhesiveness, springiness and cohesiveness of tea polysaccharides (TPs) under varying conditions of concentration, heating temperature, time, pH and calcium ion concentration. The results showed that the TPs concentration and heating temperature required for gelation were at least 5 mg/mL and 50 ℃, respectively. TPs gel strength was directly proportional to TPs concentration and temperature. Long storage time and strong acidity or alkaline could reduce the gel strength of TPs while calcium ion did not reveal stimulation effect on it.

Key words: tea polysaccharide, gel characteristics, texture analyzer, gel strength

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