Effects of immobilization in Ba-alginate on nitrile-dependent oxygen uptake rates of Candida guilliermondi
Braz. j. microbiol
;
32(3): 221-224, July-Sept., 2001.
Artigo
em Inglês
| LILACS
| ID: lil-316973
ABSTRACT
Yeast cells immobilized by entrapment in Ba-alginate gel were investigated for growth pattern and respiratory activity. The oxygen uptake rates (OUR) of cells entrapped in gels with 4 per cent alginate were 5.2 and 23 per cent lower than the OUR of 2 per cent alginate and free cells, respectively. The mass-transfer resistance offered by the matrix and growth of the entrapped cells determine a gradient of nutrients throughout the gel which is responsible for both a lower specific growth rate of immobilized cells with respect to that of free ones, and a heterogeneous biomass distribution, with progressively increasing cellular density from the inside to the outside of the matrix. Gel-matrix polymer concentration affected the maximum oxygen uptake of immobilized growing yeast cells.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Oxigênio
/
Respiração
/
Técnicas In Vitro
/
Candida
/
Reação em Cadeia da Polimerase
/
Nitrilas
Idioma:
Inglês
Revista:
Braz. j. microbiol
Assunto da revista:
Microbiologia
Ano de publicação:
2001
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Federal de Minas Gerais/BR
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