title: [Analysis of a synthetic onion aroma (author's transl)].
abstract: A complex mixture of compounds possessing an intensive aroma of onions is obtained, when propionaldehyde, propionaldehyde and acetaldehyde are treated with hydrogen sulfide and ammonia. Dihydrodithiazines, diethyltrithiolane, diethyl-methyl-1,3-dithiine and in small quantities diethyltetrathiane, dimethylthiophene, dipropyldisulfide, dipropenylsulfide, alkylpyridines, and the condensation products of aldehydes can be proved by the GC-MS-technic. The compositions of the synthetic onion aroma corresponds slightly with the composition of the natural onion aroma.
mesh_terms: D000079:Acetaldehyde; D000447:Aldehydes / Q000032:analysis; D000641:Ammonia; D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D004220:Disulfides / Q000032:analysis; D005504:Food Analysis; D005526:Food, Formulated / Q000032:analysis*; D006862:Hydrogen Sulfide; D013058:Mass Spectrometry; D011725:Pyridines / Q000032:analysis; D013843:Thiazines / Q000032:analysis; D013876:Thiophenes / Q000032:analysis; D014675:Vegetables / Q000032:analysis
chemical_list: D000447:Aldehydes; D004220:Disulfides; D011725:Pyridines; D013843:Thiazines; D013876:Thiophenes; D000641:Ammonia; D000079:Acetaldehyde; D006862:Hydrogen Sulfide
vernacular_title: Analyse eines synthetischen Zwiebelaromas