title: [The detection of Alternaria mycotoxins in laboratory culture].
abstract: Analytical methods are described for detection of the Alternaria mycotoxins alternariol (AOH), alternariol monomethyl ether (AME), altenuene (ALT) and tenuazonic acid (TeA) in natural and semisynthetic laboratory cultures. After extraction and purification of the crude extract by column chromatography on silica gel the qualitative and quantitative analyses were carried out by thin layer (TLC)- and high performance liquid chromatography (HPLC). HPLC separations were achieved using a Hypersil ODS column with methanol/water containing a complexing agent as eluent. Detection at 340 nm (AOH, AME, ALT) and 280 nm (TeA), respectively, has proved to be favourably. AME and TeA were produced in high purity and high yields as standard substances by two Alternaria strains. The identity of the toxins could be confirmed by EI-, CI- and FAB-mass spectrometry.
authors.affiliation: Institut für Futterproduktion Paulinenaue, Deutschland.
authors.forename: M
authors.initials: M
authors.lastname: Müller
authors.forename: P
authors.initials: P
authors.lastname: Lepom
mesh_terms: D000528:Alternaria; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D007783:Lactones / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D013058:Mass Spectrometry; D015394:Molecular Structure; D009183:Mycotoxins / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013720:Tenuazonic Acid / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D007783:Lactones; D009183:Mycotoxins; C040005:altenuene; D013720:Tenuazonic Acid; C005197:alternariol; C018206:alternariol monomethyl ether
vernacular_title: Nachweis von Alternaria-Mykotoxinen in Laborkulturen.