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040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_919208 _aKumaravelrajan, R.
245			_aApplication of factorial design in the premixing operation of diltiazem timed-release pellets
250			_aVol.84(2), Mar-Apr
260			_aMumbai _bIndian Journal of Pharmaceutical Science _c2022
300			_a390-399p.
520			_aThe purpose of this study was to prepare diltiazem timed-release pellets using non pareil seeds. An important step in the preparation of timed-release multiparticulate dosage forms was to mix a pilot mixture composed of various polymers or waxes with different concentration. By using the three-factor and two- level factorial design for the pilot mixing process, the mixing can be distinguished technically than the trial and error method. Core, non pareil seeds prepared by using a sugar solution. A fluidized bed processor was used to coat diltiazem on to the non pareil seeds. Hydroxypropyl methylcellulose E15 was used as coatings for non pareil seeds, with various percentage (10 %, 20 % and 30 %) in two levels (16.66 % and 33.33 %). According to the design matrix, pilot mixing was carried out for in vitro dissolution studies and optimized batches were prepared for masterblend and mixture based on the results. The Pareto chart supported the analysis of variance results for the model simplification and eliminating non-significant terms (p>0.05). The optimal process variable selected for optimizing the diltiazem timed-release pellets formulation was set to be pilot mix I=24.9 %, pilot mix II=16.6 % and pilot mix III=16.6 %. The optimized formula showed that half-life period was 2.361±0.243 h and shelf-life period was 6.875 h.
650		0	_94639 _aPHARMACEUTICS
700			_919209 _aMohan Raj, V.
773	0		_tIndian journal of pharmaceutical sciences _dNew Delhi
856			_uhttps://www.ijpsonline.com/articles/application-of-factorial-design-in-the-premixing-operation-of-diltiazem-timedrelease-pellets.pdf _yClick here
942			_2ddc _cAR