title: Enzymes for animal feeding from Penicillium chrysogenum mycelial wastes from penicillin manufacture.
abstract: OBJECTIVE
  Several enzymes from mycelial wastes of Penicillium chrysogenum fungal cultures from penicillin manufacture were studied as supplements for animal feeding.
  
  
  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
  An enzymatic precipitate from these P. chrysogenum wastes, comparable to a commercial enzymatic additive used in animal feeding, was obtained.
authors.affiliation: Departamento de Microbiología Molecular, Centro de Investigaciones Biológicas, Velázquez, Madrid, Spain. onuero@cib.csi.es
authors.forename: O M
authors.initials: OM
authors.lastname: Nuero
authors.forename: F
authors.initials: F
authors.lastname: Reyes
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D002265:Carboxylic Ester Hydrolases / Q000378:metabolism; D011232:Chemical Precipitation; D003470:Culture Media; D004345:Drug Industry; D043326:Glucan 1,3-beta-Glucosidase; D006026:Glycoside Hydrolases / Q000378:metabolism; D007220:Industrial Waste / Q000032:analysis*; D008049:Lipase / Q000378:metabolism; D010406:Penicillins; D010408:Penicillium chrysogenum / Q000737:chemistry / Q000201:enzymology*; D043324:beta-Fructofuranosidase; D001617:beta-Glucosidase / Q000378:metabolism
chemical_list: D003470:Culture Media; D007220:Industrial Waste; D010406:Penicillins; D002265:Carboxylic Ester Hydrolases; C022711:tannase; D008049:Lipase; D006026:Glycoside Hydrolases; D001617:beta-Glucosidase; D043324:beta-Fructofuranosidase; D043326:Glucan 1,3-beta-Glucosidase