Hydrolysis of butteroil by immobilized lipase using a hollow-fiber reactor: Part I. Lipase adsorption studies

• Tipo: Artigo em Revista Científica Internacional
• Data: 1992

Autores

F. Xavier Malcata (Autor) Outra; Garcia, HS (Autor) Outra; Hill, CG (Autor) Outra; Amundson, CH (Autor) Outra

Revista

Título: Biotechnology and Bioengineering

Vol. 39

Páginas: 647-657

ISSN: 0006-3592

Editora: Wiley-Blackwell

Indexação

Scopus - 49 Citações

Outras Informações

ID Authenticus: P-008-VHT

Abstract (EN): Adsorption of proteins from a crude preparation containing a lipase from Aspergillus niger on microporous polypropylene hollow fibers was studied at six different temperatures. Langmuir isotherms accurately describe the overall adsorption equilibria. Lipase is selectively adsorbed relative to the other proteins in the crude preparation. Hence, immobilization also provides further purification of the lipase. The predictions of the Langmuir model for the change in the specific activity of lipase upon adsorption are consistent with experimental results. The loading capacity of the hollow fibers decreases and the adsorption constant increases as temperature is increased. This effect is more significant in the case of lipolytic activity than it is for the total amount of adsorbed protein. Small, positive enthalpy changes are associated with the adsorption of lipase on these hydrophobic membranes.Adsorption of proteins from a crude preparation containing a lipase from Aspergilius niger on microporous polypropylene hollow fibers was studied at six different temperatures. Langmuir isotherms accurately describe the overall adsorption equilibria. Lipase is selectively adsorbed relative to the other proteins in the crude preparation. Hence, immobilization also provides further purification of the lipase. The predictions of the Langmuir model for the change in the specific activity of lipase upon adsorption are consistent with experimental results. The loading capacity of the hollow fibers decreases and the adsorption constant increases as temperature is increased. This effect is more significant in the case of lipolytic activity than it is for the total amount of adsorbed protein. Small, positive enthalpy changes are associated with the adsorption of lipase on these hydrophobic membranes.

Idioma: Inglês

Tipo (Avaliação Docente): Científica