食品科学 ›› 2005, Vol. 26 ›› Issue (10): 116-120.

• 工艺技术 • 上一篇    下一篇

羧甲基玉米多孔淀粉的制备及性能研究

 徐忠, 缪铭, 王鹏, 张海华   

  1. 哈尔滨工业大学市政环境工程学院,绿色化学与技术研究中心
  • 出版日期:2005-10-15 发布日期:2011-09-25

Study on Preparation and Properties of Carboxymethyl Corn Porous Starch

 XU  Zhong, MIAO  Ming, WANG  Peng, ZHANG  Hai-Hua   

  1. 1.College of Food Engineering, Harbin University of Commerce;2.Research Center of Green Chemistry and Technology, School of Municipal and Environmental Engineering, Harbin Institute of Technology
  • Online:2005-10-15 Published:2011-09-25

摘要: 以多孔淀粉为原料,采用一氯乙酸和乙醇溶剂来制取羧甲基多孔复合变性淀粉,并探讨了反应温度、反应时间、氢氧化钠用量、一氯乙酸用量、乙醇浓度等对羧甲基多孔淀粉的取代度的影响。以取代度为指标,通过单因素和正交实验方法确定最佳工艺条件为:反应温度45℃、反应时间6h、氢氧化钠4.0g、一氯乙酸4.5g、乙醇浓度95%。同时对羧甲基多孔淀粉、原玉米淀粉和多孔淀粉的理化性质和糊的流变学性质进行了分析比较,结果表明羧甲基多孔淀粉的理化性质和糊的流变学性质均有所改善。

关键词: 多孔淀粉, 羧甲基化, 复合变性, 理化性质, 糊的流变学性质

Abstract: In this paper, carboxymethyl corn porous starch was prepared by adding chlorine acetic acid and ethanol. The effects of the degree of substitution to temperature, time, sodium hydroxide amount, chlorine acetic acid amount and ethanol concentra- tion were also discussed. With the degree of substitution, the optimal conditions for carboxymethyl porous starch were obtained through single factor and orthogonal experiments: reaction temperature 45℃, reaction time 6h, sodium hydroxide amount 4.0g, chlorine acetic acid amount was 4.5g and ethanol concentration 95%. When compared with raw corn starch and porous starch in the physicochemical and paste rheological properties, there were more finer improvements in carboxymethyl porous starch.

Key words: porous starch, carboxymethyl, complex modified starch, physicochemical property, paste rheological property