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The leaves and stem of Zanthoxylum lepreurii were collected in two localities of Côte d’Ivoire, namely San-Pedro (South-east) and Adzopé (South). The collects were submitted to hydrodistillation with the Clevenger apparatus. The oils obtained were investigated by 13C NMR spectroscopy, GC (RI) and GC-MS. Thus, twenty-eight components accounting for 90.9-96.8% were identified. Essential oils from leaves and stem bark of Z. leprieurii exhibited the predominance of two acyclic ketones. Undecan-2-one and tridecan-2-one have been identified as the main components. Undecan-2-one was found in abundance in the stem (30.3%) and the leaves (10.0%) respectively in Adzopé and San-Pedro, while tridecan-2-one characterized all the samples (15.5%-77.2%). In addition with monoterpenoids and sesquiterpenoids identified as major components led to the new chemotypes of Z. leprieurii essential oil.
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Tanoh et al. (2018) studied this question.
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