Influence of environmental conditions on the production of pectinesterase and polygalacturonase byAspergillus niger
β Scribed by M. C. Maldonado; D. A. S. Callieri
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 323 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1573-0972
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Biosynthesis of polygalacturonase (PG) by A . niger strain R 1/214 correlates with the morphology of mycelium in submerged culture. The mean specific PG-synthesis (PG-U . g-1 . h-') increases with the degree of compactness of mycelium. PG-production can be optimized by a precise adjustment of the cu
The type of sporulation medium and time of incubation had an effect on spore viability and citric acid production by mycelia grown from Aspergillus niger spores. Shu & Johnson agar (SJA) and potato dextrose agar gave higher citric acid titres than malt-extract agar. SJA also gave better germinabilit