食品科学 ›› 2011, Vol. 32 ›› Issue (3 ): 33-35.doi: 10.7506/spkx1002-6630-201103009

• 基础研究 • 上一篇    下一篇

木糖醇介稳区宽度与晶体生长速率测定

翁贤芬   

  1. 四川理工学院材料与化学工程学院
  • 收稿日期:2010-03-19 修回日期:2010-12-29 出版日期:2011-02-15 发布日期:2011-01-13
  • 通讯作者: 翁贤芬 E-mail:wengxf@suse.edu.cn

Determination of Crystallization Metastable Zone Width and Crystal Growth Rate of Xylitol

WENG Xian-fen   

  1. College of Materials and Chemical Engineering, Sichuan University of Science and Engineering
  • Received:2010-03-19 Revised:2010-12-29 Online:2011-02-15 Published:2011-01-13
  • Contact: WENG Xian-fen E-mail:wengxf@suse.edu.cn

摘要: 用激光散射法测定纯木糖醇水溶液和含有山梨醇和葡萄糖杂质的木糖醇水溶液的结晶介稳区宽度;在介稳区内测得不同结晶温度下纯木糖醇溶液中过饱和度对晶体生长速率的影响,同时研究杂质的添加对木糖醇结晶生长速率的影响。结果表明:相同结晶温度下,生长速率随过饱和度的增大而增大;在相同结晶温度和过饱和度下,木糖醇水溶液中分别加入山梨醇和葡萄糖杂质导致生长速率下降,并随杂质含量的增大而下降,山梨醇对晶体生长的抑制作用比葡萄糖更明显。

关键词: 木糖醇, 结晶, 介稳区, 晶体生长速率

Abstract: The crystallization metastable zone width of pure xylitol solution and xylitol solution containing sorbitol or glucose was determined by laser light scattering method. The effects of super saturation and additives on crystal growth rate at different crystallization temperatures were studied. The results showed that crystal growth rate decreased with the increase of super saturation; the presence of sorbitol and glucose as undesired substances led to slower growth rate. Sorbitol had more obvious inhibitory effect on crystal growth as compared to glucose.

Key words: xrlitol, crystallization, metastable zone, crystal growth rate

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