Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/6145
Título: | Effect of PH on lhe control release o microencapsulated dye in lecithin liposomes |
Autor(es): | Gomes, Jaime Rocha |
Palavras-chave: | Liposomes Dye |
Data: | 2003 |
Editora: | Taylor & Francis |
Revista: | Journal of Liposome Research |
Citação: | "Journal of Liposome Research". ISSN 0898-2104. 13:2 (2003) 123-130. |
Resumo(s): | The objective of our work has been the microencapsulation of dyes with lecithin from soybean, with the formation of liposomes, as a substitute for synthetic auxiliaries so as to improve the quality of the effluent. Current scenarios promote the disintegration and leakage of the liposomes, such as, changes in temperature, pH and the use of surfactants. Since dyeing process is a mix of all these parameters, we pretended to study each one separately. Changes in pH at constant temperature induce a release of dye similar with changes in temperature. In acid conditions we found a very fast initial dye release which doesn’t occur in basic conditions. Using carboxyfluorescein, as a pH fluorescence probe, we concluded that the liposome membrane doesn’t protect the liposome interior from changes on the external pH. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/6145 |
ISSN: | 0898-2104 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DET/2C2T - Artigos em revistas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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artº lipossomas_pH_revisto.pdf | documento principal | 130,46 kB | Adobe PDF | Ver/Abrir |