食品科学 ›› 2010, Vol. 31 ›› Issue (14): 47-52.doi: 10.7506/spkx1002-6630-201014011

• 工艺技术 • 上一篇    下一篇

微波法制备羧甲基魔芋葡甘聚糖的工艺及产物性能研究

夏玉红1,律 冉1,钟 耕1,2,*,赵亚楠1,何翠婵1   

  1. 1.西南大学食品科学学院 2.重庆市魔芋工程技术中心
  • 收稿日期:2009-11-18 出版日期:2010-07-15 发布日期:2010-12-29
  • 通讯作者: 钟耕 E-mail:zhongdg@126.com
  • 基金资助:

    重庆市自然科学基金项目(CSTC,2009BB1249);“十一五”国家科技支撑计划项目(2007BAD73B04);
    西南大学食品科学学院 2009 年度本科生创新实验项目

Microwave Heating for the Dry Preparation of Carboxymethyl Konjac Glucomannan and Its Properties

XIA Yu-hong1,LU Ran1,ZHONG Geng1,2,*,ZHAO Ya-nan1,HE Cui-chan1   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China ;
    2. Konjac Engineering Technology Center of Chongqing, Chongqing 400715, China
  • Received:2009-11-18 Online:2010-07-15 Published:2010-12-29
  • Contact: Zhong Geng E-mail:zhongdg@126.com

摘要:

为对微波法制备羧甲基葡甘聚糖工艺及其产品的理化性质进行研究,采用单因素试验研究魔芋葡甘聚糖/氯乙酸物质的量比、魔芋葡甘聚糖/ 氢氧化钠物质的量比、微波反应时间和温度对羧甲基魔芋葡甘聚糖取代度的影响,在此基础上通过正交试验确定最佳工艺参数并研究所得产物的基本性质及其应用性能。结果表明:微波法制备羧甲基魔芋葡甘聚糖的最佳工艺是:氯乙酸、魔芋葡甘聚糖和氢氧化钠物质的量比值为1.1:1:2.5,反应温度75℃,反应时间8min,在此条件下产品的取代度为0.48;产品极易溶于水形成透明溶液,溶液稳定性增强;此外,随着取代度的提高,产品的吸潮性能和保水性能也逐渐增强。

关键词: 微波, 羧甲基魔芋葡甘聚糖, 吸潮性, 保水性

Abstract:

In this study, microwave heating was used for the dry preparation of carboxymethyl konjac glucomannan (CMK) and its properties were also investigated. The effects of konjac glucomannan (KGM) -to-chloroacetic acid molar ratio, konjac glucomannan-to-sodium hydroxide molar ratio, microwave heating time and temperature on the degree of substitution (DS) were studied in the single factor experiments. Based on these studies, the optimal values of chloroacetic acid/KGM/sodium hydroxide molar ratio and reaction temperature and time determined by orthogonal array design to be 1.1: 1: 2.5, 75 ℃ and 8 min, respectively. Under these optimal reaction conditions, the maximum DS was up to 0.48. The final product obtained exhibited high solubility in water, excellent transparency and good stability. In addition, increasing DS resulted in higher water-absorbing and water-holding capacities.

Key words: microwave, carboxymethyl konjac glucomannan, water-absorbing capacity, water-holding capacity

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