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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Frijlink, Henderik W.
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Combinations of arginine and pullulan reveal the selective effect of stabilization mechanisms on different lyophilized proteinscitations
- 2018The mechanism behind the biphasic pulsatile drug release from physically mixed poly(DL-lactic(-co-glycolic) acid)-based compactscitations
- 2018The mechanism behind the biphasic pulsatile drug release from physically mixed poly(DL-lactic(-co-glycolic) acid)-based compactscitations
- 2017Dry powder inhalationcitations
- 2017Increased drug load and polymer compatibility of bilayered orodispersible filmscitations
- 2016Compacted Solid Dosage Form
- 2016Single dose sublingual testosterone and oral sildenafil versus a dual-route/dual-release fixed-dose combination tabletcitations
- 2015Protein release from water-swellable poly(d,l-lactide-PEG)-b-poly(ϵ-caprolactone) implantscitations
- 2015Protein Stability during Hot Melt Extrusion
- 2015Size and molecular flexibility of sugars determine the storage stability of freeze-dried proteinscitations
- 2015Protein Stability during Hot Melt Extrusion: The Effect of Extrusion Temperature, Hydrophilicity of Polymers and Sugar Glass Pre-stabilization
- 2015Polymeric formulations for drug release prepared by hot melt extrusion:application and characterizationcitations
- 2015Polymeric formulations for drug release prepared by hot melt extrusioncitations
- 2014Pharmacokinetics of a Prototype Formulation of Sublingual Testosterone and a Buspirone Tablet, Versus an Advanced Combination Tablet of Testosterone and Buspirone in Healthy Premenopausal Womencitations
- 2013Unraveling protein stabilization mechanismscitations
- 2012Preparation and physicochemical evaluation of a new tacrolimus tablet formulation for sublingual administrationcitations
- 2010Effect of drug-carrier interaction on the dissolution behavior of solid dispersion tabletscitations
- 2008Pore shape in the sodium chloride matrix of tablets after the addition of starch as a second componentcitations
- 2008Pore shape in the sodium chloride matrix of tablets after the addition of starch as a second componentcitations
- 2008Using the internal stress concept to assess the importance of moisture sorption-induced swelling on the moisture transport through the glassy HPMC filmscitations
- 2006Characterization of the molecular distribution of drugs in glassy solid dispersions at the nano-meter scale, using differential scanning calorimetry and gravimetric water vapour sorption techniquescitations
- 2005Inulin is a promising cryo- and lyoprotectant for PEGylated lipoplexescitations
- 2005The effect of powder blend and tablet structure on drug release mechanisms of hydrophobic starch acetate matrix tabletscitations
- 2005Location-dependent analysis of porosity and pore direction in tabletscitations
- 2005Location-dependent analysis of porosity and pore direction in tabletscitations
- 2004Pulmonary delivery of therapeutic peptides via dry powder inhalationcitations
- 2004Incorporation of lipophilic drugs in sugar glasses by lyophilization using a mixture of water and tertiary butyl alcohol as solventcitations
- 2003Investigations into the stabilization of drugs by sugar glassescitations
- 2003Investigations into the stabilization of drugs by sugar glasses:III. The influence of various high-pH bufferscitations
- 2001Plasticisation of amylodextrin by moisture. Consequences for compaction behaviour and tablet propertiescitations
- 2001Inulin glasses for the stabilization of therapeutic proteinscitations
- 2001Effect of molecular weight and glass transition on relaxation and release behaviour of poly(DL-lactic acid) tabletscitations
Places of action
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article
Plasticisation of amylodextrin by moisture. Consequences for compaction behaviour and tablet properties
Abstract
Purpose: Amylodextrin, a starch-based controlled release excipient, spontaneously absorbs moisture during storage. The aim of this study was to investigate plasticisation of amylodextrin by moisture and its effect on compaction and tablet characteristics. Methods: The glass transition temperature (T-g) of amylodextrin powders with moisture fractions (T-g) 0.070 <x(w) <0.40 was studied by conventional and modulated DSC. Elastic modulus and yield stress were determined from compressive stress-strain experiments. Compaction behaviour was studied at 3 and 300 mm/s using a compaction simulator. Results: The T-g of amylodextrin-water blends showed a smooth reduction with increasing x(w) equalling room temperature at x(w) = 0.19. Experimentally obtained T-g values were close to temperatures as predicted by the Gordon-Taylor/Kelley-Bueche model and the modified Couchman-Karasz model. The elastic modulus decreased steeply between x(w) = 0.17 and 0.23. Compaction experiments showed that moisture facilitated consolidation due to increasing powder compressibility and reduced compact relaxation. However. at x(w) = 0.23, compressibility was reduced and relaxation significantly higher due to the rubbery character of this powder. Consequently, the lowest tablet porosities were obtained around x(w) = 0.15. Although decreasing porosities enhanced tablet strengths, the maximum obtainable tablet strengths decreased with moisture due to reduced particle bonding and lowering of the elastic modulus. Conclusion: Moisture largely affects the visco-elastic and compaction characteristics of amylodextrin. Hence, control over moisture content is essential to produce tablets with reproducible porosity, strength and dissolution characteristics. (C) 2001 Elsevier Science B.V. All rights reserved.