Production of amylases by Aspergillus tamarii

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Production of amylases by Aspergillus tamarii in solid state fermentation at high initial glucose concentrations

The effect of glucose and other soluble sugars (xylose, fructose, maltose, cellobiose and lactose) in the production of amylases by Aspergillus tamarii was studied in solid state fermentation (SSF). Wheat bran solid state cultures were resistant to catabolite repression even at high concentration of glucose (10%). Results show the potential of solid state systems to overcome the adverse effects...

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Case of keratitis caused by Aspergillus tamarii.

We report a case of Aspergillus tamarii keratitis. Ocular injury was known to be a predisposing factor. Topical natamycin and econazole treatment and subsequent systemic ketoconazole treatment proved effective. The isolate was identified by morphological characteristics and sequence analysis as A. tamarii, a member of Aspergillus section Flavi not hitherto reported from keratomycosis.

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Aflatoxin and cyclopiazonic acid production by a sclerotium-producing Aspergillus tamarii strain.

The production of aflatoxins B1 and B2 by Aspergillus tamarii (subgenus Circumdati section Flavi) is reported for the first time. The fungus was isolated from soil collected from a tea (Camellia sinensis) field in Miyazaki Prefecture, Japan. Three single-spore cultures, NRRL 25517, NRRL 25518, and NRRL 25519, were derived from subcultures of the original isolate 19 (MZ2). Each of these single-s...

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Enhanced production of Aspergillus tamarii lipase for recovery of fat from tannery fleshings

The influence of various oil cakes has been investigated for high level production of lipase using Aspergillus tamarii MTCC 5152. By solid state fermentation in wheat bran containing 2.5% w/w gingili oil cake at 70% v/w moisture content the fungus produced a maximal yield of lipase (758 ± 3.61 u/g) after 5 days of incubation using 2% v/w inoculum containing 10(6) spores/mL. Wheat bran and gingi...

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Raw starch conversion by Saccharomyces cerevisiae expressing Aspergillus tubingensis amylases

BACKGROUND Starch is one of the most abundant organic polysaccharides available for the production of bio-ethanol as an alternative transport fuel. Cost-effective utilisation of starch requires consolidated bioprocessing (CBP) where a single microorganism can produce the enzymes required for hydrolysis of starch, and also convert the glucose monomers to ethanol. RESULTS The Aspergillus tubing...

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ژورنال

عنوان ژورنال: Revista de Microbiologia

سال: 1999

ISSN: 0001-3714

DOI: 10.1590/s0001-37141999000200014