| Polyethylene-starch extrudates as erodible carriers for bioactive materials: I. Erodibility and in vitro dye release studies. | |
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MedLine Citation:
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PMID: 8176638 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The objective of the present investigation is to develop and evaluate polyethylene-starch based carriers for sustaining the release of bioactive materials. Polyethylene-starch carriers were prepared by incorporating various amounts of corn starch 0, 40, 80, and 100% in polyethylene beads with and without dye. Acid orange dye was incorporated (1%) to study release patterns and the effect of starch (%) on release. The granulated mixtures were extruded to form uniform dispersions of starch and polyethylene throughout the extrudate. The extrudates obtained were studied for SEM surface characterization before, during, and after release studies to study the erosion process. In the case of 100% starch, 80% of the matrix was eroded in 5 weeks, while with 40% and 80% starch, erosion was less than 20%. The dye release studies showed that release could be sustained well over 12 weeks, depending on the starch (%) incorporated. The erosion process was studied using scanning electron microscopic techniques, which showed gradual erosion of starch particles, leaving a polyethylene skeleton. These materials show promising potential for use as carriers for bioactive materials. |
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Authors:
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P G Krishnan; J L Julson; D J Robison; Y V Pathak |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of biomaterials applications Volume: 8 ISSN: 0885-3282 ISO Abbreviation: J Biomater Appl Publication Date: 1994 Jan |
Date Detail:
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Created Date: 1994-06-07 Completed Date: 1994-06-07 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8813912 Medline TA: J Biomater Appl Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 285-97 Citation Subset: IM |
Affiliation:
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Department of Nutrition and Food Science, South Dakota State University, Brookings 57007. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Coloring Agents Drug Carriers / standards* Microscopy, Electron, Scanning Polyethylenes / administration & dosage* Starch / administration & dosage* |
| Chemical | |
Reg. No./Substance:
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0/Coloring Agents; 0/Drug Carriers; 0/Polyethylenes; 9005-25-8/Starch |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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