RESEARCH ARTICLE

The feasibility of coating by cooling crystallization on ibuprofen naked tablets

  • Fatima Mameri , 1 ,
  • Ouahiba Koutchoukali , 1 ,
  • Mohamed Bouhelassa 1 ,
  • Anne Hartwig 2 ,
  • Leila Nemdili 1 ,
  • Joachim Ulrich 2
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  • 1. University Constantine 3, Engineering Faculty of Pharmaceutical Processes, 25000 Constantine, Algeria
  • 2. Martin Luther University Halle-Wittenberg, Center of Engineering Science, Thermal Process Engineering, D-06099 Halle, Germany

Received date: 01 Sep 2016

Accepted date: 25 Oct 2016

Published date: 12 May 2017

Copyright

2017 Higher Education Press and Springer-Verlag Berlin Heidelberg

Abstract

Sugar spray coating is a frequently used process in the pharmaceutical industry. However, this process presents the disadvantage to form an amorphous coating around the active ingredient. A crystalline coating formed on the surface of a tablet is highly desirable. Recently, a new process of coating by cooling crystallization has been developed and applied on bisacodyl pastilles obtained by melt crystallization. In this work, we investigated the feasibility of coating by cooling crystallization on ibuprofen “naked tablets” manufactured by compression. In the first part of this work, the solubility and the metastable zone width have been determined experimentally for the coating solution because they are essential factors for any crystallization process. In the second part, the coating process is investigated on the operating conditions that affect the surface morphology and the crystal growth rate. These experimental conditions include concentration of the coating solution, degree of sub-cooling, agitation speed, retention time, and surface properties of the naked ibuprofen tablets. The results show that naked tablet coating by cooling crystallization is feasible and can be applied in the pharmaceutical industry.

Cite this article

Fatima Mameri , Ouahiba Koutchoukali , Mohamed Bouhelassa , Anne Hartwig , Leila Nemdili , Joachim Ulrich . The feasibility of coating by cooling crystallization on ibuprofen naked tablets[J]. Frontiers of Chemical Science and Engineering, 2017 , 11(2) : 211 -219 . DOI: 10.1007/s11705-017-1619-1

Acknowledgements

The authors are grateful to Nadpharmadic production Laboratory, for providing the sample of ibuprofen naked tablets. One of the authors is grateful to Martin Luther University Halle-Wittenberg, Center for Engineering, Thermal Process Engineering to host her and for the experimental support. She would also like to acknowledge the financial support of University Constantine 3 scholarship.
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