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Surface properties of Yarrowia lipolytica and their relevance to γ-decalactone formation from methyl ricinoleate

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Resumo:The surface of the lipid-degrading yeast, Yarrowia lipolytica, was characterized by contact angle and zeta potential (ζ) measurements. The cells were mainly hydrophilic with a negative charge that was only affected from pH 2 to 4. To study the effects of the surface charges on the biotransformation of methyl ricinoleate into the aroma compound, γ-decalactone, the ζ values of the substrate droplets were modified by adding a cationic surfactant into the medium at concentrations that did not diminish cell viability: the adhesion of the lipid substrate to the cells was increased but not the overall performance of the process, therefore the adhesion is not the rate limiting here. Our methodology offers interesting perspectives for further applications.
Autores principais:Aguedo, Mário
Outros Autores:Waché, Yves; Belin, Jean-Marc; Teixeira, J. A.
Assunto:Biotransformation Contact angles Surface properties Yarrowia lipolytica Zeta potential
Ano:2005
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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