Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior de Tecnologia e Gestão >
Tecnologia Química e Biológica >
DTQB - Posters em Encontros Científicos Internacionais >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/6108

Título: Release studies of essential oil of Thymus vulgaris L. from PLA microcapsules.
Autor: Martins, I.M.
Rodrigues, S.N.
Barreiro, M.F.
Rodrigues, A.E.
Palavras-chave: Microencapsulation
Thymus vulgaris L.
PLA
Release studies
Issue Date: 2011
Editora: Chempor
Citação: Martins, I.M.; Rodrigues, S.N. ; Barreiro, M.F. ; Rodrigues, A.E. (2011) - Release studies of essential oil of Thymus vulgaris L. from PLA microcapsules. In 11th International Chemical and Biological Engineering Conference - CEMPOR2011. Lisboa, Portugal
Resumo: The incorporation of essential oils, perfumes, deodorants and other active agents in microcapsules with the purpose of controlled release over a certain period of time is being a topic of considerable research in recent years. The controlled release systems are used to deliver compounds such us drugs, pesticides, fragrances or flavors at prescribed rates, together with improved efficacy, safety and convenience. Nowadays, core-shell microcapsules have been investigated extensively for utilization in controlled release systems, especially in drug delivery, where the polymeric wall is a permeable element with porosity that can determine the release behavior of core materials. The aim of this work is to study the release of essential oil of Thymus vulgaris L. (thyme oil) during the first days of release and develop a general diffusion model for predicting mass transport phenomena in biodegradable polymer microcapsules prepared by a coacervation technique. The release of this essential oil was investigated for microcapsules in solution by comparing calculated and experimental diffusion profiles of oil across de polymer membrane. Control of size and wall thickness of microcapsules and encapsulation efficiency were also studied.
URI: http://hdl.handle.net/10198/6108
Appears in Collections:DTQB - Posters em Encontros Científicos Internacionais

Files in This Item:

File Description SizeFormat
Martins et al. Chempor2011 - Poster.pdf1,81 MBAdobe PDFView/Open
Restrict Access. You can request a copy!
Statistics
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 


  © Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
  Estamos no RCAAP Governo Português separator Ministério da Educação e Ciência   Fundação para a Ciência e a Tecnologia

Financiado por:

POS_C UE