title: [Photodensitometric determination of "PR-toxin", metabolite of Penicillium roqueforti (author's transl)].
abstract: Two methods are proposed for the determination of PR-toxin. One allows a direct quantitative estimation of the mycotoxin, the other utilizes an imine formation after reaction with ammonium hydroxide. In both cases a fluorodensitometric assay on thin-layer chromatographic plates is carried out after spraying with p-dimethylaminobenzaldehyde reagent. The two procedures can be applied to estimate the toxin in foodstuffs at levels as low as 10 and 1 microgram/kg, respectively.
mesh_terms: D002855:Chromatography, Thin Layer / Q000379:methods*; D003611:Dairy Products / Q000032:analysis; D003720:Densitometry / Q000379:methods*; D005504:Food Analysis / Q000379:methods; D009183:Mycotoxins / Q000032:analysis*; D010407:Penicillium
chemical_list: D009183:Mycotoxins
vernacular_title: Dosage photodensitométrique de la "PR-toxine" métabolite de Penicillium roqueforti.