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Chemical Composition and Antimicrobial Activity of the Essential Oils from New Caledonian Citrus macroptera and Citrus hystrix
Author(s) -
Waikedre Jean,
Dugay Annabelle,
Barrachina Isabel,
Herrenknecht Christine,
Cabalion Pierre,
Fournet Alain
Publication year - 2010
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.200900196
Subject(s) - sabinene , limonene , chemistry , antimicrobial , hystrix , essential oil , traditional medicine , chemical composition , botany , food science , biology , organic chemistry , medicine
The essential oils from the leaves of Citrus macroptera and C. hystrix , collected in New Caledonia, have been analyzed by gas chromatography/mass spectrometry (GC/MS) and evaluated for their antimicrobial activity. A total of 35 and 38 constituents were identified, representing 99.1 and 89.0% of the essential oils, respectively. Both essential oils were rich in monoterpenes (96.1 and 87.0%, resp.), with β ‐pinene as major component (33.3 and 10.9%, resp.), and poor in limonene (2.4 and 4.7%, resp.). Other main components of C. macroptera oil were α ‐pinene (25.3%), p ‐cimene (17.6%), ( E )‐ β ‐ocimene (6.7%), and sabinene (4.8%). The essential oil of C. hystrix was characterized by high contents of terpinen‐4‐ol (13.0%), α ‐terpineol (7.6%), 1,8‐cineole (6.4%), and citronellol (6.0%). The antimicrobial activity was evaluated against five bacteria and five fungi strains. Both oils were inactive against bacteria. However, the C. macroptera leaf oil exhibited a pronounced activity against Trichophyton mentagrophytes var. interdigitale , with a minimal‐inhibitory concentration ( MIC ) of 12.5 μg/ml.