ISSN:
1432-072X
Keywords:
Esterase Activity
;
Aspergillus
;
Continuous Culture
;
Electrophoretic and Cytoplasmic Detection
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract In citrate limiting medium the esterase activity of Aspergillus niger had a maximum value at the lowest dilution rate (D=0.013 h-1) and at all higher dilution rates progressively decreased in activity. In glucose limiting medium the esterase activity values were always lower than in citrate limiting medium and did not show much variation with varying dilution rate. Electrophoresis of cell free extracts from all dilution rates revealed a multimolecular esterase profile only at D=0.013 h-1 in citrate limiting medium, which was also the only dilution rate to support good conidiation. The increase in esterase activity at D=0.013 h-1 was observed cytochemically to occur in the phialides. No cytochemical esterase staining occurred in the vegetative cultures at all other dilution rates.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00403060
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