<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><bold>Objective</bold>: Maize plants have been genetically engineered to produce genotypes with agriculturally desirable traits such as high starch content, pest resistance and increased nutritional value. Maize starch has been widely used as an excipient in pharmaceutical formulations. This study aims to produce sustained release ibuprofen tablets using starch obtained from different maize genotypes as polymers. <bold>Methods</bold>: Ibuprofen matrix tablets were prepared with the starches isolated from the maize genotypes and the unmodified plant. The mechanical properties of the tablets were evaluated using the crushing strength (CS), friability (FR) and CSFR. A 32 factorial design was applied using the time taken for 50 % (T50) and 90 % (T90) drug release as dependent variables while the polymer-drug ratio and polymer types were the independent variables. <bold>Results</bold>: The CSFR was significantly higher (p&lt;0.05) in tablets formulated with the starches obtained from the modified cultivars. Drug release for all the formulations fitted the Higuchi model while the mechanism of release was generally by super case transport. The polymer-drug ratio and polymer type strongly interacted to increase the dissolution times (T50 and T90) and CSFR. Starches isolated from the genetically modified cultivars provided a more sustained release of ibuprofen from the tablet matrix through erosion and polymer relaxation. <bold>Conclusion</bold>: The results indicate that the genetic modification of maize can quantitatively affect the drug release modifying effects of maize starch in drug formulation.</p>
</abstract>

Objective: Maize plants have been genetically engineered to produce genotypes with agriculturally desirable traits such as high starch content, pest resistance and increased nutritional value. Maize starch has been widely used as an excipient in pharmaceutical formulations. This study aims to produce sustained release ibuprofen tablets using starch obtained from different maize genotypes as polymers. Methods: Ibuprofen matrix tablets were prepared with the starches isolated from the maize genotypes and the unmodified plant. The mechanical properties of the tablets were evaluated using the crushing strength (CS), friability (FR) and CSFR. A 32 factorial design was applied using the time taken for 50 % (T50) and 90 % (T90) drug release as dependent variables while the polymer-drug ratio and polymer types were the independent variables. Results: The CSFR was significantly higher (p<0.05) in tablets formulated with the starches obtained from the modified cultivars. Drug release for all the formulations fitted the Higuchi model while the mechanism of release was generally by super case transport. The polymer-drug ratio and polymer type strongly interacted to increase the dissolution times (T50 and T90) and CSFR. Starches isolated from the genetically modified cultivars provided a more sustained release of ibuprofen from the tablet matrix through erosion and polymer relaxation. Conclusion: The results indicate that the genetic modification of maize can quantitatively affect the drug release modifying effects of maize starch in drug formulation.

Formulation and Evaluation of Sustained Release Ibuprofen Matrix Tablets Using Starch from Maize Genotypes as Polymer

Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy

Department of Pharmaceutical Technology and Raw Materials Development

Acta Marisiensis - Seria Medica

This work is licensed under the Creative Commons Attribution 4.0 International License.

Objective: Maize plants have been genetically engineered to produce genotypes with agriculturally desirable traits such as high starch content, pest resistance...

Formulation and Evaluation of Sustained Release Ibuprofen Matrix Tablets Using Starch from Maize Genotypes as Polymer

Publicado en línea: 12 jul 2021

Páginas: 122 - 126

Recibido: 10 feb 2021

Aceptado: 29 may 2021

DOI: https://doi.org/10.2478/amma-2021-0018

Palabras clave
maize genotypes, starch, ibuprofen matrix tablets, sustained release

© 2021 Lateef Gbenga Bakre et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Formulation and Evaluation of Sustained Release Ibuprofen Matrix Tablets Using Starch from Maize Genotypes as Polymer

Publicado en línea: 12 jul 2021

Páginas: 122 - 126

Recibido: 10 feb 2021

Aceptado: 29 may 2021

DOI: https://doi.org/10.2478/amma-2021-0018

Palabras clavemaize genotypes, starch, ibuprofen matrix tablets, sustained release

© 2021 Lateef Gbenga Bakre et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Palabras clave
maize genotypes, starch, ibuprofen matrix tablets, sustained release