华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (11): 91-94,119.

• 化学化工 • 上一篇    下一篇

交联和羟丙基改性对王米淀粉糊稳定性的影响

扶雄 黄强 罗发兴 李琳   

  1. 华南理工大学 淀粉与植物蛋白深加工教育部工程研究中心,广东 广州 510640
  • 收稿日期:2006-12-26 出版日期:2007-11-25 发布日期:2007-11-25
  • 通信作者: 扶雄(1971-) ,男,博士,副教授,主要从事淀粉科学与技术研究. E-mail:lfxfu@scut. edu.cn
  • 作者简介:扶雄(1971-) ,男,博士,副教授,主要从事淀粉科学与技术研究.
  • 基金资助:

    2005 年粤港关键领域重点突破招标项目(2005A20302003)

EfTects of Crosslinking and Hyroxypropylation Modificatioo on Stability of Cornstarch Paste

Fu Xiong  Huang Qiang  Luo Fa-xing  Li Lin   

  1. Research Institute of Light Industry and Chemical Engineering, South China Univ. of Tech. ,Guangzhou 510640 , Guangdong, China
  • Received:2006-12-26 Online:2007-11-25 Published:2007-11-25
  • Contact: 扶雄(1971-) ,男,博士,副教授,主要从事淀粉科学与技术研究. E-mail:lfxfu@scut. edu.cn
  • About author:扶雄(1971-) ,男,博士,副教授,主要从事淀粉科学与技术研究.
  • Supported by:

    2005 年粤港关键领域重点突破招标项目(2005A20302003)

摘要: 采用Brabender 连续和度测定仪,系统研究了三偏磷酸钠交联、环氧丙烷羟丙基化以及羟丙基、交联复合改性对玉米淀粉糊稳定性的影响.结果表明:玉米淀粉经支联改性后,起糊温度下降,糊的黏度稳定性得到改善,但冻融稳定性变化不明显;羟丙基改性降低了玉米淀粉的起糊温度,改善了淀粉的冻融稳定性,但崭度稳定性变化不大;采用在丙基和交联复合改性能显著提高淀粉糊的黏度稳定性和冻融稳定性,其中,先交联后羟丙基改性对淀粉糊的稳定性改善更为明显.

关键词: 淀粉, 改性, 交联, 羟丙基, 淀粉糊, 稳定性

Abstract:

In this paper , comstarch was modified respectively by sodium trimetaphosphate andl or propylene oxide, and the pastes stabilities of the modified starch were then investigated by Brabender viscographer. It is found that , after the modification , the setout gelatinization temperature of crosslinked comstarches (CL) decreases and the viscous stability improves , while the freeze-thaw stability hardly changes, that the hydroxypropylated comstarches( HP) have lower setout gelatinization temperature and good freeze-thaw stability , while the viscous stability hardly changes , and that the combined modification by both sodium trimetaphosphate and propylene oxide results in great improvement of both the viscous and the freeze-thaw stabilities , especially the modification by crosslinking followed hydroxypropylation.

Key words: starch, modification, crosslinking, hyroxypropylation, starch paste, stability