Journal
JOURNAL OF ESSENTIAL OIL RESEARCH
Volume 17, Issue 3, Pages 351-353Publisher
ALLURED PUBL CORP
DOI: 10.1080/10412905.2005.9698927
Keywords
Croton hieronymi; Euphorbiaceae; essential oil composition; gamma-asarone; camphor borneol; (E)-asarone; antibacterial activity; antifungal activity
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The volatile constituents of the leaf and root oils of Croton hieronymi Griseb. were studied by GC and GC/MS. Thirty-three and 32 compounds have been identified in leaf (60.2%) and root (86.2%) oils, respectively. The major components of the leaf oil were camphor (13.9%) and borneol (5.9%), whereas the root oil contained gamma-asarone (25.7%), borneol (19.0%), (E)-asarone (11.4%) and camphor (11.1%) as main constituents. The oils were tested for their inhibitory effect against four strains of bacteria (Escherichia coli, Saltnonella typhimurium, Klebsiella pneumoniae and Streptococcus pyogenes) and one yeast (Candida albicans). The root oil was found to be active against E. coli and C. albicans, moderately effective against K pneumoniae and showed little or no activity against S. typhimurium and S. pyogenes. The leaf oil was active against K pneumoniae and moderately active against E. coli.
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