title: Pyrazines responsible for the potatolike odor produced by some serratia and cedecea strains.
abstract: The pyrazines responsible for the potatolike odor produced by some Serratia and Cedecea cultures were identified by gas-liquid chromatography (with flame ionization and thermoionic ionization detectors) and mass spectrometry. Alkylpyrazines were produced by the six strains studied irrespective of their odors. The major alkyl-methoxypyrazine produced by Cedecea davisae was 3-sec-butyl-2-methoxypyrazine, and that produced by odoriferous Serratia strains (S. rubidaea, S. odorifera, and S. ficaria) was 3-isopropyl-2-methoxy-5-methyl-pyrazine. Other pyrazines produced by some strains were 3-isopropyl-2-methoxypyrazine, 3-isobutyl-2-methoxypyrazine, 3-sec-butyl-2-methoxy-5-methylpyrazine, and 3-isobutyl-2-methoxy-6-methylpyrazine. Some of these pyrazines had not previously been found as natural products or to be produced by bacteria.
authors.affiliation: Laboratoire de Recherches sur les Arômes, Institut National de la Recherche Agronomique, BV 1540, F-21034 Dijon Cedex, France.
authors.forename: A
authors.initials: A
authors.lastname: Gallois
authors.forename: P A
authors.initials: PA
authors.lastname: Grimont