2010全国生物材料大会论文集之 (987).pdf

SO2-Release Performances of Sulphite Microparticles
Under Different Relative Humidity
SO2-Release Performance
Yage Xing,Xihong Li*, Qinglian Xu, Juan Yun, Yaqing Lu, Jing Wang
Key Laboratory of Food Nutrition & Safety, Ministry of Education
Tianjin University of Science and Technology
Tianjin, China
*Correspondence author: xingyage1@

Abstract—In this investigation, the water-soluble sulphite parison with a wide variety of microencapsulation
encapsulated using ethylcellulose phase separation and then techniques. Phase separation method has been used essfully
ethylcellulose microcapsules were used as core material to prepare in the preparation of drug delivery systems which were always
dual coated microparticles using melting scattered condensation made from natural and biodegradable polymers such as
method. Morphology of microencapsulation was observed by ethylcellulose [3]. In addition to protecting the core, the
scanning electron microscopy (SEM). Release profiles of SO2 from encapsulation provides controlled release. Therefore, the release
sulphite microparticles were also studied. The results showed that performances of core from encapsulated powder are quite
the rates of SO2 released from microparticles were not only affected important for its application [4,5].
by varying the type, but also by the relative humidity in the Only few s