期刊
JOURNAL OF ESSENTIAL OIL RESEARCH
卷 13, 期 6, 页码 460-462出版社
ALLURED PUBL CORP
DOI: 10.1080/10412905.2001.9699729
关键词
Origanum calcaratum; Origanum scabrum; Lamiaceae; essential oil composition; p-cymene; thymol; carvacrol; antimicrobial activity
The chemical composition of the oils from two endemic and rare taxa of the genus Origanum L., i.e O. calcaratum Juss. = O. tournefortii Aiton and O. scabrum Boiss. et Heldr., from Greece, were investigated by GC and GC/MS. Twenty-two compounds were identified into the oil of O. calcaratum, representing 98.0% of the oil composition, The main compounds were p-cymene (18.1%), gamma-terpinene(9.6%),thymol(42.8%),carvacrol (12.9%) and isocaryophyllene (4.7%). In the oil of O. scabrum, 28 compounds were identified, representing 98.0% of the oil composition, The main compound was carvacrol (66.7%), while p-cymene (7.8%), gamma-terpinene (3.6%), caryophyllene oxide (2.1%) and manool (2.7%) were found in large amounts. The oils were investigated for their antimicrobial activity against Gram-positive, i.e., Staphylococcus aureus, S. epidermidis and Gram-negative, i.e., Escherichia coli, Klebsiella pneumoniae microorganisms.
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