Brazilian Journal of Microbiology | |
EFFECTS OF IMMOBILIZATION IN Ba-ALGINATE ON NITRILE-DEPENDENT OXYGEN UPTAKE RATES OF CANDIDA GUILLIERMONDII | |
João Carlos Teixeira Dias1  Rachel Passos Rezende1  Valter Roberto Linardi1  | |
[1] ,Universidade Federal de Minas Gerais Instituto de Ciências Biológicas Departamento de MicrobiologiaBelo Horizonte MG ,Brasil | |
关键词: Nitriles; Candida guilliermondii; Ba-alginate; respiration; Nitrilas; Candida guilliermondii; Ba-alginato; respiração; | |
DOI : 10.1590/S1517-83822001000300011 | |
来源: SciELO | |
【 摘 要 】
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% alginate were 5.2 and 23% lower than the OUR of 2% 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.
【 授权许可】
CC BY-NC
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