Effect of different concentrations of sodium chloride on the growth and the biochemical activities of aspergillus flavus link
Egyptian Journal of Microbiology. 1991; 26 (1): 133-146
in English
| IMEMR
| ID: emr-95344
ABSTRACT
The effect of different sodium chloride concentrations on the growth and aflatoxin B 1 production, as well as protein, total nitrogen, nucleic acids, free amino acids and elemental composition of Aspergillus flavus link isolate was studied. The following is a brief summary of the results:
Aflatoxin B 1, protein and nucleic acids production decreased with increasing sodium chloride medium concentration. The free amino acids proline, valine, phenylalanine and arginine showed a notable increase at the concentration of 5% compared with control values, while the amounts of all detectable amino acids at 25% showed very marked increases compared with the values of control or 5%. Methionine, histidine and lycine appeared only at 25%. Sodium chloride induced proline synthesis, its amount increased as sodium chloride increased until it reached maximum at 20%. The amount of total nitrogen showed remarkable decrease at 5%, it reached 19. 05% less than its respective control value, while its value very markedly increased at 25% and reached 43. 68% more than its control value. Also, the amount of total amino acids decreased at 5%, it reached 10. 75% less than its control value, while its value showed remarkable increase at 25% and reached 1270.05% more than its control value. Sodium ion concentration increased at all sodium chloride concentrations, while potassium, iron and magnesium concentration decreased at all sodium chloride concentrations
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Sodium Chloride
/
Growth
/
Metabolism
Language:
English
Journal:
Egypt. J. Microbiol.
Year:
1991
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