Production of Nuclease-forming 5′-Nucleotide by Aspergillus quercinus in a Low Phosphate Medium
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Production of phosphatase by Aspergillus awamori var. kawachii in a low phosphate medium.
The effect of phosphate on the production of phosphatases by Aspergillus awamori var. kawachii was studied. In a high phosphate medium, little phosphatase was produced, and the phosphatase activity was predominately for beta-glycerophosphate. In a low phosphate medium, the production of phosphatase was increased and activity for glucose-6-phosphate predominated. Medium containing 1 mg of phosph...
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28, 36, and 41 kDa, On the other hand, Kurosawa et al.4) found an alkaline RNase in addition to three acid nucleases in frcsh fruit bodies of L, edodes confirming the results of Endo et aLi) To establish more precise information on these enzymes, we tried to isolate and characterize each nuclease or RNase in L. edodes. First, we isolated an acid RNase, RNase Le2, and established the prirnary st...
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Different compositions of liquid media were used for their efficacy in the production of beta-galactosidase by Aspergillus oryzae in submerged fermentation. Enzyme production was improved by switching from lactose-based media to soybean meal- and wheat bran-based media. Further improvement was made when the soybean meal medium was supplemented with sodium nitrate and magnesium sulfate. Res...
متن کاملPhosphate Medium
The production of ribonucleic acid (RNA)-depolymerase-forming 5'-nucleotides (5'-nuclease) was investigated with the fungus Aspergillus quercinus in media containing 68, 10, 5, 3, 1, and 0.5 mg of phosphorus per 100 ml. Yields were maximal with 5 mg of phosphorus per 100 ml. RNA-depolymerase-forming 3'-nucleosides (3'nuclease) and phosphomonoesterase were maximal in media containing 1 and 0.5 m...
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Trace elements were required by Aspergillus melleus and A. ochraceus, but not by A. sulphureus, to grow and to elaborate ochratoxin A. The composition of the medium affected the synthesis of the toxin more than the growth of the mycelium.
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ژورنال
عنوان ژورنال: Applied Microbiology
سال: 1968
ISSN: 0003-6919
DOI: 10.1128/am.16.9.1293-1299.1968