title: [Determination of the benzo(a)pyrene content of microbial biomasses and protein feed].
abstract: A method for the fluorimetric determination of benzo(a)pyrene content is presented consisting of classical clean-up steps. The method was applied to microbial biomasses and different feed stuffs. The investigated yeasts grown on carbohydrates keep the limit of 5 ppb benzo(a)-pyrene recommended by the IUPAC. Yeast samples of the VEB Petrolchemisches Kombinat Schwedt grown on petroleum distillate have a constant quality with benzo(a)pyrene contents at 1 ppb. A selection of bacterial biomasses shows also contents less than 5 ppb. The benzo(a)pyrene contents of biomasses cultivated on liquid manure exceed the given limit.
authors.affiliation: Akademie der Wissenschaften der DDR.
authors.forename: G
authors.initials: G
authors.lastname: Schädlich
authors.forename: V
authors.initials: V
authors.lastname: Riis
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D001564:Benzo(a)pyrene / Q000032:analysis*; D004044:Dietary Proteins / Q000032:analysis*; D005470:Fluorometry; D015003:Yeasts / Q000032:analysis*
chemical_list: D004044:Dietary Proteins; D001564:Benzo(a)pyrene
vernacular_title: Bestimmung des Benzo(a)pyrengehaltes von mikrobiellen Biomassen und Eiweissfuttermitteln.