21. July 2018
The Andrographis herba extract (AHE), a traditional Chinese medicine (TCM), was developed to directly compactible powders by fluid bed coating with 6% to 12% hydroxypropyl methylcellulose (HPMC). The process-, instrument-, and formulation-related variables of the coating process were simultaneously optimized with the Hunter L18 screening design. Yield (Y1), compactibility (Y2), and angle of repose (Y3) were measured as the responses. The optimized variables were 50 °C for inlet air...
22. January 2016
At a novel pH value of the polymeric solution (6.2), variable chitosan (Cs) and sodium tripolyphosphate (TPP) concentrations and mass ratios were optimized to improve the process yield without undesirable particle flocculation. Prepared formulations were characterized in terms of particle size (PS), zeta potential (ZP) and percentage yield (% yield). Artificial neural networks (ANN) were built up and used to identify the parameters that control nanoparticle (NP) size and yield, in addition to...
05. December 2015
During the development of a wet granulated 850 mg metformin hydrochloride tablet formulation, the tablets exhibited high friability (>3% w/w) irrespective of the source of extra-granular magnesium stearate (MgSt). High friability values indicated that an anti-bonding effect of MgSt was too high to be overcome by 3.3% w/w povidone as a binder in the formulation with 1.5% w/w residual granule moisture. More
19. September 2015
Textured mannitol powder is widely used as a pharmaceutical excipient for tablet compaction. In order to choose the right tableting parameters, it is necessary to understand its mechanical behavior during deformation under industrial tableting conditions. More