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Queiroz ALP, Wood B, Faisal W, Farag F, Garvie-Cook H, Glennon B, Vucen S, Crean AM. Application of percolation threshold to disintegration and dissolution of ibuprofen tablets with different microcrystalline cellulose grades. Int J Pharm 2020; 589:119838. [PMID: 32890656 DOI: 10.1016/j.ijpharm.2020.119838] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 11/28/2022]
Abstract
The study presented was conducted to determine whether a percolation threshold value, previously determined for ibuprofen/microcrystalline cellulose (MCC) blends using percolation theory and compression data (Queiroz et al., 2019), could translate to tablet disintegration and dissolution data. The influence of MCC grade (air stream dried versus spray dried) on tablet disintegration and dissolution was also investigated. Complementary to conventional disintegration and dissolution testing, Raman imaging determined drug distribution within tablets, and in-line particle video microscopy (PVM) and focused-beam reflectance measurement (FBRM) monitored tablet disintegration. Tablets were prepared containing 0-30% w/w ibuprofen. Raman imaging confirmed the percolation threshold by quantifying the number and equivalent circular diameters of ibuprofen domains on tablet surfaces. Across the percolation threshold, a step change in dissolution behaviour occurred, and tablets containing air stream dried MCC showed slower disintegration rates compared to tablets containing spray dried MCC. Dissolution measurements confirmed experimentally a percolation threshold in agreement with that determined using percolation theory and compression data. An increase in drug domains, due to cluster formation, and less efficient tablet disintegration contributed to slower ibuprofen dissolution above the percolation threshold. Slower dissolution was measured for tablets containing air stream dried compared to spray dried MCC.
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Affiliation(s)
- Ana Luiza P Queiroz
- SSPC Pharmaceutical Research Centre, School of Pharmacy, University College Cork, Cork, Ireland
| | - Barbara Wood
- SSPC Pharmaceutical Research Centre, School of Chemical and Bioprocess Engineering, University College Dublin, Dublin 4, Ireland; APC Ltd, Cherrywood Business Park, Loughlinstown, Co Dublin, Ireland
| | - Waleed Faisal
- SSPC Pharmaceutical Research Centre, School of Pharmacy, University College Cork, Cork, Ireland; School of Pharmacy, Minia University, Al Minyā, Egypt
| | - Fatma Farag
- SSPC Pharmaceutical Research Centre, School of Pharmacy, University College Cork, Cork, Ireland; School of Pharmacy, Minia University, Al Minyā, Egypt
| | - Hazel Garvie-Cook
- Renishaw plc, New Mills, Wotton-under-Edge, Gloucestershire GL12 8JR, UK
| | - Brian Glennon
- SSPC Pharmaceutical Research Centre, School of Chemical and Bioprocess Engineering, University College Dublin, Dublin 4, Ireland; APC Ltd, Cherrywood Business Park, Loughlinstown, Co Dublin, Ireland
| | - Sonja Vucen
- SSPC Pharmaceutical Research Centre, School of Pharmacy, University College Cork, Cork, Ireland
| | - Abina M Crean
- SSPC Pharmaceutical Research Centre, School of Pharmacy, University College Cork, Cork, Ireland.
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