Volume 43, Issue 6 pp. 1186-1193
Research Article

Micronization of Three Active Pharmaceutical Ingredients Using the Rapid Expansion of Supercritical Solution Technology

Chun-Hao Fang

Chun-Hao Fang

National Taiwan University, Department of Chemical Engineering, Taipei, Taiwan

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Pei-Hua Chen

Pei-Hua Chen

Taipei Medical University, Department of Orthopedics, Shuang Ho Hospital, Taipei, Taiwan

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Yan-Ping Chen

Yan-Ping Chen

National Taiwan University, Department of Chemical Engineering, Taipei, Taiwan

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Muoi Tang

Corresponding Author

Muoi Tang

Chinese Culture University, Department of Chemical and Materials Engineering, Taipei, Taiwan

Correspondence: Muoi Tang ([email protected]), Department of Chemical and Materials Engineering, Chinese Culture University, Taipei, Taiwan.Search for more papers by this author
First published: 08 January 2020
Citations: 12

Abstract

The rapid expansion of supercritical solution (RESS) technology was applied to recrystallize and micronize three active pharmaceutical ingredients (APIs) of monobenzone, ethylparaben, and kojic acid. All unprocessed (original) APIs had a large mean particle size over 200 μm with wide particle size distribution. Supercritical carbon dioxide served as the solvent to extract each API in a high-pressure vessel. The nearly saturated supercritical solution was then expanded through a capillary spray nozzle to ambient pressure state. The APIs were recrystallized in a very short time period. The final API particles with submicron sizes were obtained with much less intensity of crystallinity. The optimal RESS process parameters and the improved result of the in vitro dissolution test for the API of ethylparaben are reported.

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