Acid-stable ^|^alpha;-Amylase of Black Aspergilli
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چکیده
منابع مشابه
Diagnostic tools to identify black aspergilli
The present taxonomy of the black aspergilli reveals that there are 19 accepted taxa. However the identification of species of Aspergillus section Nigri is often problematic in spite of the existence of numerous methods proposed. An overview is provided of phenotypic and molecular methods to identify the accepted species of the black aspergilli. Colony morphology, conidial size and ornamentatio...
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o-Amylases have been obtained in crystalline form from a variety of sources covering the animal and vegetable kingdoms. A comparative study of their chemical composition seemed particularly appropriate, since all these enzymes, catalyzing the same chemical reaction, have been shown to possess many common features. The amino acid composition of several cy-amylases has already been described (l-5...
متن کاملGibberellic acid-controlled synthesis of alpha-amylase in barley endosperm.
Because the endosperm half of a barley seed produces several hydrolytic enzymes in response to added gibberellins (1, 4, 5, 8), it is an attractive experimental system for a study of the mechanism of action of gibberellic acid. The only living cells in the half seed are those of the aleurone layers. These are an apparently homogeneous collection of respiring, nondividing cells which have the hi...
متن کاملalpha-Amylase Isozymes in Gibberellic Acid-treated Barley Half-seeds.
The presence of multiple forms of alpha-amylase in gibberellic acid-treated embryoless barley half-seeds was demonstrated by separation on diethylaminoethyl-Sephadex and isoelectric focusing polyacrylamide gel disc electrophoresis. Two major alpha-amylase fractions (A and B), each consisting of two to three isozyme components, were purified. alpha-Amylase fractions A and B were distinguishable ...
متن کاملOccurrence of black Aspergilli in indoor environments of six countries.
Black Aspergilli (Aspergillus section Nigri) are widely distributed in various habitats. They act as food spoilage organisms, human pathogens, and mycotoxin producers and are frequently encountered in indoor environments. Black Aspergilli, specifically A. niger, A. welwitschiae, and A. carbonarius, produce different ochratoxins and fumonisins. Ochratoxins are known to induce renal disorders fol...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1963
ISSN: 1881-1280,0002-1369
DOI: 10.1271/bbb1961.27.806