食品科学 ›› 2004, Vol. 25 ›› Issue (2): 96-99.

• 工艺技术 • 上一篇    下一篇

工艺参数对超临界CO2抗溶剂法制备乙基纤维素微囊的影响

 张岩, 陈岚, 李保国, 华泽钊, 伍贻文, 刘哲鹏, 陆伟跃   

  1. 上海理工大学食品与低温研究所,复旦大学
  • 出版日期:2004-02-15 发布日期:2011-10-24

Effects of Processing Parameters on Ethyl Cellulose Microencapsulation Using Supercritical CO2 Antisolvent Precipitation

 ZHANG  Yan, CHEN  Lan, LI  Bao-Guo, HUA  Ze-Zhao, WU  Yi-Wen, LIU  Zhe-Peng, LU  Wei-Yue   

  1. 1.Food and Low-temperature Research Institute, University of Shanghai for Science and Technology;2.Fudan University
  • Online:2004-02-15 Published:2011-10-24

摘要: 利用超临界CO2抗溶剂法从乙基纤维素和丙酮溶液中制得了乙基纤维素微囊,考察了温度、压力、溶液浓度和搅拌速度等工艺参数对物性的影响,试验结果表明:超临界CO2抗溶剂法可用于食品材料的微囊制粒,所得乙基纤维素微囊的粒径在2.66~9.49μm之间;随着温度和溶液浓度的增加,颗粒粒径及其粒径分布增加;随着压力和搅拌速度的增加,颗粒粒径及其粒径分布减小。

关键词: 超临界CO2抗溶剂法, 乙基纤维素, 微囊

Abstract: Microencapsulation of ethyl cellulose was obtained from a solution of ethyl cellulose in acetone using the supercriticalCO2 antisolvent precipitation (SAS). The effects of temperature, pressure, liquid solution concentration, and stirring rate on thephysical characteristics of ethyl cellulose microencapsulations were studied. The mean diameters of the microencapsulationranging between 2.66 and 9.49μm could be obtained. The particle size increase and the particle size distributions enlargementwith the increasing of temperature and solution concentration were found. The particle size decrease and the particle sizedistributions reduction with increasing of pressure and stirring rate were also observed.

Key words: supercritical CO2 antisolvent precipitation, ethyl cellulose, microencapsulation