Hydrocarbons from three Vanilla bean species: V. fragrans, V. madagascariensis, and V. tahitensis
1997
Ramaroson-Raonizafinimanana, B. | Gaydou, E.M. | Bombarda, I.
The hydrocarbon content, isolated by column chromatography over alumina gel, in three Vanilla bean species (V. fragrans, V. madagascanensis, and V. tahitensis) ranges between 0.2 and 0.6%. The composition of these hydrocarbon fractions has been investigated. Using retention indices and gas chromatography/mass spectrometry, 25 n-alkanes, 17 branched alkanes, and 12 alkenes have been identified. The major constituents are odd-numbered hydrocarbons including n-nonacosane and n-hentriacontane. The major even-numbered compounds are n-octacosane and n-triacontane. Since V. fragrans from Reunion Island contains large amounts of n-alkanes and n-alkenes, and V. tahitensis is rich in branched alkanes, hydrocarbon profiles could be used for origin differentiation.
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