Open AccessSIMULTANEOUS ESTIMATION OF DRUGS PRESENT IN MICROBEADS FOR COLON-TARGETED DRUG DELIVERY SYSTEM
Author(s) -
Abhishek Kumar,
Meenakshi Bharkatiya
Publication year - 2019
Publication title -
asian journal of pharmaceutical and clinical research
Language(s) - English
Resource type - Journals
eISSN - 2455-3891
pISSN - 0974-2441
DOI - 10.22159/ajpcr.2019.v12i11.34236
Subject(s) - pectin , particle size , chromatography , differential scanning calorimetry , drug , chemistry , drug delivery , polymer , sodium alginate , fourier transform infrared spectroscopy , coating , biomedical engineering , materials science , pharmacology , chemical engineering , sodium , food science , organic chemistry , medicine , physics , engineering , thermodynamics
Objectives: The present study was aimed to develop Eudragit S100 coated colon-targeted sustained-release formulations of alginate-pectin and alginate-hydroxypropyl methylcellulose microbeads containing norfloxacin (NF) and tinidazole (TZ) for the treatment of amebiasis which was simultaneous estimated.
Methods: Taguchi L9 orthogonal array design has been used to optimize the composition and operating conditions for the preparation of formulations. Nine batches (P1-H5) were prepared by taking three independent variables (X1 – drug:polymer ratio, X2 – concentration of sodium alginate, and X3 – curing time) at three levels (1, 2, and 3). Response variables studied for batches (P1-H5) were mean particle size (μm) (Y1), drug entrapment efficiency (% w/w) (Y2), and drug loading (% w/w) (Y3). NF and TZ were simultaneous estimated by ultraviolet spectrophotometric method. Drug-polymer compatibility study was carried out by differential scanning calorimetry and Fourier-transform infrared spectroscopy and indicates no physicochemical interaction.
Results: Microbeads were analyzed for morphological characteristics, mean particle size, drug entrapment efficiency, drug loading, and in vitro drug release. The average size of optimized alginate-pectin microbeads was found to be 881±0.05 μm with an entrapment efficiency of 78.50±0.28% (NF) and 86.50±0.32% (TZ) which was simultaneous estimated.
Conclusion: The studies concluded that formulated enteric-coated alginate-pectin microbeads after enteric coating can be used effectively for the delivery of NF and TZ to colon.