A pullulan‐degrading enzyme activity of Aureobasidium pullulans

  title={A pullulan‐degrading enzyme activity of Aureobasidium pullulans},
  author={Thomas P. West and B. Strohfus},
  journal={Journal of Basic Microbiology},
A pullulan‐degrading enzyme activity was detected in the culture medium after growth of the fungus Aureobasidium pullulans on corn syrup as a carbon source. The product of pullulan catabolism by this activity was determined to be glucose. The highest specific activity of this enzyme was found after 7 days of fungal growth. Although α‐amylase activity was not detectable, the presence of a glucoamylase activity was indicated. It appeared that the enzyme responsible for pullulan degradation was… 
Ability of the fungus Aureobasidium pullulans to produce polysaccharide (pullulan) with presence of different Carbon and Nitrogen sources
The effect of incubation period, different carbon and nitrogen sources on the production of the extracellular polysaccharide pullulan by Aureobasidium pullulansNRRL58560 was examined. The results
Pullulan production from Aureobsidium pullulans by continuous culture
Ten isolates of Aureobasidium pullulans were screened for the highest production of pullulan and minimal melanin production from Fayoum Governorate, Egypt. The optimum conditions for continuous
Pullulan production from coconut by-products by Aureobasidium pullulans
The chemical structure of thepullulan synthesized from coconut by-products exhibited was similar when it was compared using FT-IR spectroscopy with that of pullulan available commercially.
Biosynthesis and hyper production of pullulan by a newly isolated strain of Aspergillus japonicus-VIT-SB1
This study has confirmed that pullulan production capacity of this novel strain and Aureobasidium pullulans are comparable and Hence Aspergillus japonicus-VIT-SB1 strain can be commercially exploited as a potential pullULan producing strain.
Pullulan production from brewery wastes by Aureobasidium pullulans
The production of pullulan from brewery wastes by Aureobasidium pullulans in shake flask culture was investigated. The maximum pullulan concentration (6.0 g/l) was obtained after 72 h of
Production and characterization of pullulan from beet molasses using a nonpigmented strain of Aureobasidium pullulans in batch culture
Overall, beet molasses pretreated with sulfuric acid and activated carbon appears as an attractive fermentation medium for the production of pullulan by A. pullulans.
An Indigenous Hyperproductive Species of Aureobasidium pullulans RYLF-10: Influence of Fermentation Conditions on Exopolysaccharide (EPS) Production
This work aims to optimize the submerged culture conditions to produce the exopolysaccharides from an indigenous yeast Aureobasidium pullulans RYLF-10 with respect to several operating parameters in shake flask fermentation and results in the maximum EPS yield.
Isolation of Aureobasidium pullulans and the effect of different conditions for pullulanase and pullulan production
Isolation and production of pullulahase by a new Aureobasidium pullulans isolate from the Fayoum Governorate (AUMC 2997) which was identified by the Assiut University Mycological Center was


Extracellular Enzymatic Activities in Aureobasidium Pullulans
Since some enzymes showed a high level of activity, A. pullulans could possibly be considered a promising source of extracellular lytic enzymes.
Elevated polysaccharide production by mutants of the fungus Aureobasidium pullulans
The dry weights of the mutant cells were found not to differ greatly from those of the parent cells whether corn syrup or sucrose served as the carbon source, and the pullulan content of the polysaccharide elaborated by the parent was higher than either mutant.
Glucoamylase Production by Aureobasidium Pullulans
Aureobasidium pullulans converts starch into biomass by the production of glucoamylase (1,4-a-D-glucan glucohydrolase EC only. The enzyme synthesis did not appear to depend on substrate
Polysaccharide produced by the genus Pullularia. I. Production of polysaccharide by growing cells.
A dextranlike polysaccharide was found to be produced on substrates of sucrose, maltose, glucose, and fructose by growing cells of various strains of the genus Pullularia. The polysaccharide,
Production of amylases by yeasts.
Yeasts (228) isolated for natural habitats were screened for their ability to produce amylases in semisolid medium of wheat bran. Strains of Aureobasidium pullulans, Candida famata, and Candida kefyr