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Optimization of formulations of metoprolol succinate tablets containing ofada rice starch acetate as tablet matrix for sustained release using response surface methodology
Background: Release-retarding polymers in matrix tablets play a vital role in controlling drug release from tablets. Objectives: To prepare metoprolol succinate tablets by direct compression using Ofada rice (Oryza glaberrima Steud) starch acetate, degree of substitution (DS) 2.22, as a matrix for...
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2016
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| LEADER | 00000njm a2000000a 4500 | ||
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| 001 | oai:repository.ui.edu.ng:123456789/3458 | ||
| 042 | |a dc | ||
| 720 | |a Okunlola, A. |e author | ||
| 260 | |c 2016 | ||
| 520 | |a Background: Release-retarding polymers in matrix tablets play a vital role in controlling drug release from tablets. Objectives: To prepare metoprolol succinate tablets by direct compression using Ofada rice (Oryza glaberrima Steud) starch acetate, degree of substitution (DS) 2.22, as a matrix for sustained release. Materials and methods: The central composite design and response surface methodology were applied to evaluate the interactive effects of three variables: percent content of starch acetate (X1), compression pressure (X2) and compression time (X3), on tablet crushing strength, friability and dissolution time (t80). Results: Crushing strength was 90.0 to 140.50 N; Friability 0.05 to 0.90% and t80 5.75 to 11.50 h. X1 and X2 had significant effects on crushing strength and dissolution time (p < 0.0001). The interactions between X1 and X2 and those between X1 and X3 were significant on crushing strength and dissolution time, and on friability respectively (p < 0.0001). The correlation coefficients indicated that the regression model represented the experimental data well (R2 = 0.9971 and R2 (Adj) = 0.9944 for crushing strength; R2 = 0.9976 and R2 (Adj) = 0.9954 for friability; R2 = 0.9979 and R2 (Adj) = 0.9961 for t80). Optimized conditions for formulation of metoprolol succinate tablets were 60 %w/w Ofada starch acetate; 150 MNm-2 compression pressure and 60s compression time. Conclusion: Optimized formulations of metoprolol tablets containing Ofada starch acetate with good mechanical strength and prolonged dissolution can be obtained when process conditions are adjusted within the reported values. | ||
| 024 | 8 | |a 0189-8434 | |
| 024 | 8 | |a ui_art_okunlola_optimization_2016 | |
| 024 | 8 | |a Nigerian Journal of Pharmaceutical Research 12(1), pp. 49-58 | |
| 024 | 8 | |a http://ir.library.ui.edu.ng/handle/123456789/3458 | |
| 653 | |a Central composite design | ||
| 653 | |a Metoprolol succinate tablets | ||
| 653 | |a Ofada rice starch acetate | ||
| 653 | |a Response surface methodology | ||
| 245 | 0 | 0 | |a Optimization of formulations of metoprolol succinate tablets containing ofada rice starch acetate as tablet matrix for sustained release using response surface methodology |