Characterization and drug delivery behaviour of starch-based hydrogels prepared via isostatic ultrahigh pressure

Szepes, A; Makai, Z; Blumer, C; Mader, K; Kasa, P; Szabo-Revesz, P ✉ [Révész, Piroska (Gyógyszerformák é...), szerző] Gyógyszertechnológiai Intézet (SZTE / GYTK)

Angol nyelvű Tudományos Szakcikk (Folyóiratcikk)
Megjelent: CARBOHYDRATE POLYMERS 0144-8617 1879-1344 72 (4) pp. 571-578 2008
  • SJR Scopus - Polymers and Plastics: D1
    The purpose of our study was to investigate the applicability of isostatic ultra high pressure (IUHP) for the aim of drug formulation. Aqueous suspensions of potato and maize starches containing theophylline as a model drug were subjected to IUHP. The changes in the structure and morphology of potato and maize starches were investigated. The release profile of theophylline from the pressurized samples was also studied. The aqueous suspensions subjected to WHIP turned into highly viscous gels. The crystalline structure of maize starch was changed, while PS pressurized in aqueous medium retained its original X-ray pattern. The sample containing potato starch as a gel-forming polymer exhibited faster drug dissolution compared to an aqueous theophylline suspension used as a reference, while the pressurization of maize starch resulted in a get exhibiting sustained drug release. The results of the dissolution study can be explained with the changes in structure and morphology of the starches caused by IUHP processing and with the different pressure sensitivities of PS and MS. (c) 2007 Elsevier Ltd. All rights reserved.
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    2021-05-13 17:33