title: Mutagenic evaluation of single cell protein with various mammalian test systems.
abstract: Single cell protein (SCP)--a product containing 80% raw protein obtained from bacteria grown on a methanol substrate--was tested for mutagenicity in 5 in vivo tests in different mammalian species. The animals were fed either a standard laboratory diet, a semi-synthetic diet, diets containing 12.5 and 25% SCP or pure SCP. The following investigations were carried out: dominant-lethal-test; host-mediated assay; micronucleus test; chromosome studies in bone marrow cells; in vivo sister chromatid exchange test. The statistical evaluation of all test results did not reveal any evidence for mutagenic activity of the SCP.
mesh_terms: D000818:Animals; D001426:Bacterial Proteins / Q000494:pharmacology*; D002467:Cell Nucleus / Q000187:drug effects; D002478:Cells, Cultured; D002875:Chromosomes / Q000187:drug effects; D006224:Cricetinae; D003412:Cricetulus; D004032:Diet; D005260:Female; D005799:Genes, Dominant / Q000187:drug effects; D005804:Genes, Lethal / Q000187:drug effects; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D009153:Mutagens; D051381:Rats
chemical_list: D001426:Bacterial Proteins; D009153:Mutagens