American Journal of Essential Oils and Natural Products
2017, Vol. 5 Issue 2, Part A
Antibacterial/radical scavenging activities, content, chemotaxonomy and chemical components of volatile oils of two Plectranthus amboinicus (Lour.) Spreng. (Lamiaceae), grown in Yemen
AUTHOR(S): Khaled Hussein, Ahlam H Ahmed and Sahar Algabali
ABSTRACT:Evaluate the content, identify the chemotype and analyze the chemical components of volatile oils of the cultivated Plectranthus amboinicus (CPSU) and the wild P. amboinicus (WPRR), from Yemen, were the main targets of this work. Antibacterial activity of the investigated oils were tested against four standard bacterial strains. Radical scavenging activity (RSA) of oils were estimated as well, using spectrophotometric DPPH method. Volatile oils components were achieved by IR spectroscopy and GC/MS. The presence of phenolic and alcoholic compounds within the oils components were inferred by IR analysis. GC/MS analysis of CPSU and WPRR oils showed that the dominant component of both is thymol (36.90% and 79.20% correspondingly) and indicated that the examined oils have thymol chemotype. The evaluation of the oil’s content show that the CPSU and WPRR possess 1.43% and 1.57% (v/w) oil content, respectively. Remarkable antibacterial activity and promising RSA of oils, were found to be correlated mainly to thymol and other alcoholic components. RSA results indicated that WPRR oil could be considered as a natural source of hydroxyl radical scavenger.
Pages: 12-18 | 1114 Views 36 Downloads
How to cite this article:
Khaled Hussein, Ahlam H Ahmed, Sahar Algabali. Antibacterial/radical scavenging activities, content, chemotaxonomy and chemical components of volatile oils of two Plectranthus amboinicus (Lour.) Spreng. (Lamiaceae), grown in Yemen. Am J Essent Oil Nat Prod 2017;5(2):12-18.