title: Interference of Helix pomatia extracts on the determination of methandriol in veterinary residue control analysis.
abstract: Aqueous solutions containing methandriol (MAD) were incubated with Succus helix pomatia (SHP) or beta-glucuronidase from Escherichia coli (EC). SHP, used for enzymatic hydrolysis of urinary steroid conjugates for residue analysis of anabolic agents, caused transformation of MAD into methyltestosterone. No conversion occurred when bacterial beta-glucuronidase from E. coli was used.
authors.affiliation: Dr. L. Willems-Instituut, Department of Residue Analysis, Diepenbeek, Belgium.
authors.forename: L
authors.initials: L
authors.lastname: Leyssens
authors.forename: M
authors.initials: M
authors.lastname: Van Puymbroeck
authors.forename: J
authors.initials: J
authors.lastname: Raus
mesh_terms: D045930:Anabolic Agents / Q000652:urine*; D000818:Animals; D002021:Buffers; D002417:Cattle; D004350:Drug Residues / Q000032:analysis*; D005188:False Negative Reactions; D008401:Gas Chromatography-Mass Spectrometry; D006372:Helix, Snails; D008695:Methandriol / Q000652:urine*; D008777:Methyltestosterone / Q000032:analysis; D019155:Veterinary Drugs / Q000652:urine*
chemical_list: D045930:Anabolic Agents; D002021:Buffers; D019155:Veterinary Drugs; D008695:Methandriol; D008777:Methyltestosterone