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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/3908

Título: Evaluation of surfactants of thyme oil microcapsules by coacervation
Autor: Martins, I.M.
Rodrigues, S.N.
Barreiro, M.F.
Rodrigues, A.E.
Palavras-chave: Microencapsulation
Surfactants
PLA
Thyme oil
Issue Date: 2010
Citação: Martins, I.M.; Rodrigues, S.N.; Barreiro, M.F.; Rodrigues, A.E. (2010) - Evaluation of surfactants of thyme oil microcapsules by coacervation. In VIII International Conference on Bioencapsulation. Porto, Portugal.
Resumo: The formation of microcapsules (size, shape and stability) is greatly affected by the conditions used in the o/w emulsion preparation, being particularly relevant the used surfactant. The objective of this work is to study the effect of using different surfactants with hydrophilic-lipophilic balance (HLB) values from 11 to 16.5 in the encapsulation process of thyme oil by coacervation using polylactide (PLA) with polymer wall. Different emulsions of thyme oil were prepared and the surfactants investigated were Tween® 20, Tween® 80, Tergitol™ 15-S-9 and a combination of Tergitol™ 15-S-9 with Span® 85. Microcapsules size, morphology and encapsulation efficiency were studied as a function of the used surfactant.
URI: http://hdl.handle.net/10198/3908
Appears in Collections:DTQB - Resumos em Proceedings Não Indexados ao ISI

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