高取代度羧甲基玉米淀粉制备工艺的研究

李为民; 张本山; 汪建平; 屈哲辉

doi:10.13386/j.issn1002-0306.2016.08.046

高取代度羧甲基玉米淀粉制备工艺的研究

1. 华南理工大学轻工与食品学院
2. 广州市高士实业有限公司

基金项目:

广州市对外科技合作项目(201508030020)；

详细信息

作者简介:
李为民(1989-),男,硕士研究生,研究方向:功能碳水化合物化学材料理论与技术,E-mail:ncuskliweimin@163.com。;

张本山(1964-),男,博士,副教授,研究方向:功能碳水化合物化学材料理论与技术,E-mail:lczhang@scut.edu.cn。;

中图分类号: TS234
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出版历程
- 收稿日期: 2015-07-05

Study on preparation of highly substituted carboxymethyl corn starch

College of Light Industry and Food Science,South China University of Technology
Guangzhou Glorystar Chemical Co.,Ltd.

摘要

摘要: 以玉米淀粉为原料,乙醇为溶剂,氯乙酸为醚化剂,研究高取代度羧甲基淀粉的制备工艺。还比较了不同淀粉、醚化剂的种类以及Na OH状态对取代度的影响。结果表明,最佳工艺为:二次加碱法,95%（质量分数）的乙醇作溶剂,淀粉乳浓度为25%,氯乙酸用量为115 g,Na OH用量为2.25（摩尔比,碱∶酸）,碱化温度为40℃,碱化时间为10 h,碱化Na OH用量为1（摩尔比,碱∶酸）,醚化温度为40℃,醚化时间为10 h,醚化阶段用14 g Na₂CO₃代替部分Na OH。一步法制备了取代度（DS）=1.21,反应效率（RE）=61.38%的羧甲基淀粉（CMS）,非晶颗粒态淀粉的取代度比原淀粉略高,四种淀粉制备CMS取代度从高到低依次为马铃薯淀粉、木薯淀粉、蜡质玉米淀粉、玉米淀粉,氯乙酸作醚化剂时取代度远高于氯乙酸钠,固体碱制备CMS的取代度比液体碱高。
- 玉米淀粉 /
- 高取代度 /
- 羧甲基淀粉 /
- 制备
Abstract: This paper mainly used corn starch as raw material,ethanol as solvent,chloroacetic acid as etherification agent,to study the influence of various factors on the degree of substitution(DS) respectively. The processing conditions of preparing carboxymethyl starch(CMS) with high degree of substitution was as follows :sodium hydroxide was added for two times,95%(mass fraction) ethanol as solvent,starch slurry concentration was25 %, 115 g chloroacetic acid, dosage of sodium hydroxide was 2. 25( molar ratio, alkali : acid), 40 ℃ was adopted to alkalify starch,alkalization for 10 h,sodium hydroxide for alkalization was 1(molar ratio,alkali∶acid),40 ℃ was used to etherify starch,kept the etherification for 10 h,14 g sodium carbonate was used to replace part of sodium hydroxide during etherification phase. In addition,comparison of effects on DS of different types of starches,etherifying agents and sodium hydroxide states were also had been discussed. Results showed that the carboxymethyl starch,which DS was 1.21 and reaction efficiency(RE) was 61.38%,was attained by one step method. DS of non-crystal granular starch was slightly improved compared with native starch.According to DS from high to low,it was potato starch,cassava starch,waxy corn starch,corn starch successively that were used to prepare CMS. DS of CMS based on chloroacetic acid as etherification agent was much higher than sodium chloroacetate,and DS of CMS prepared by solid alkali increased dramatically compared with liquid alkali.
- corn starch /
- high degree of substitution /
- carboxymethyl starch /
- preparation

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参考文献(12)

[1]	Thomas H,Andreas K.Carboxymethyl ether of cellulose and starch a review[J].Macr Omolecular Symposia,2005,223:13-39.
[2]	B Volkert F,Loth W Lazik J,Engelhardt.Highly substituted carboxymethyl starch[J].Starch,2004,56(7):307-314.
[3]	蔡秋芳.高取代度羧甲基淀粉的制备及在印花糊料上的应用[D].无锡:江南大学,2012:1-2.
[4]	Pratik N Bhandari,Milford A Hanna.Preparation of highly substituted carboxymethyl starch using a twin-screw extruder[J].Starch/Sta¨rke,2011,63:771-779.
[5]	Fan L,Wang L,Gao S,et al.Synthesis,characterization and properties of carboxymethyl kappa carrageenan[J].Carbohydrate Polymers,2011,86(3):1167-1174.
[6]	C J Tijsen,R M Voncken,A A C M Beenackers.Design of a continuous process for the production of highly substituted granular carboxymethyl starch[J].Chemical Engineer in Science,2001,56(3):411-418.
[7]	张向阳.溶剂法制备非晶颗粒态羧甲基玉米淀粉及性质研究[D].广州:华南理工大学,2009:35-36.
[8]	黄静,潘丽军,郑志,等.一种快速准确测定羧甲基淀粉取代度的方法[J].食品工业科技,2003,24(3):82-83.
[9]	Vittoria Balsamo,Francisco Lopez-Carrasquero,Estrella Laredo,et al.Preparation and thermal stabilityof carboxymethyl starch/quaternary ammonium salts complexes[J].Carbohydrate Polymers,2011,83(1):1680-1689.
[10]	钟丁通,王仁章,吴亦华,等.羧甲基木薯淀粉的合成研究[J].三明学院学报,2008,25(4):417-419.
[11]	张友松.变性淀粉生产与应用手册[M].北京:中国轻工业出版社,1999:137.
[12]	范庆松,具本植,张淑芬,等.干法制备高取代度高粘度羧甲基淀粉[J].精细化工,2005,22(1):112-114.