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Journal Article
Research Support, Non-U.S. Gov't
Enzymes for animal feeding from Penicillium chrysogenum mycelial wastes from penicillin manufacture.
AIMS: Several enzymes from mycelial wastes of Penicillium chrysogenum fungal cultures from penicillin manufacture were studied as supplements for animal feeding.
METHODS AND RESULTS: Proteins were precipitated with tannic acid, acetone, ethanol or polyethyleneglycol 6000. The levels of the enzyme activities found in the different precipitates were similar. The activities of invertase, beta-1,3-glucanase, lipase and tannase were higher and those of amylase, cellulase, pectinase, protease and xylanase were lower. Precipitation with tannic acid was selected as an easy and simple method.
CONCLUSIONS, SIGNIFICANCE AND IMPACT OF THE STUDY: An enzymatic precipitate from these P. chrysogenum wastes, comparable to a commercial enzymatic additive used in animal feeding, was obtained.
METHODS AND RESULTS: Proteins were precipitated with tannic acid, acetone, ethanol or polyethyleneglycol 6000. The levels of the enzyme activities found in the different precipitates were similar. The activities of invertase, beta-1,3-glucanase, lipase and tannase were higher and those of amylase, cellulase, pectinase, protease and xylanase were lower. Precipitation with tannic acid was selected as an easy and simple method.
CONCLUSIONS, SIGNIFICANCE AND IMPACT OF THE STUDY: An enzymatic precipitate from these P. chrysogenum wastes, comparable to a commercial enzymatic additive used in animal feeding, was obtained.
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