Chemical Composition and Biological Activities of Essential Oil from Plectranthus amboinicus Collected in Dak Lak, Vietnam

Abstract

Several research studies have explored the essential oil properties and other aspects of this plant, attracting the interest of international scientists. 10-19 However, despite the long history of using P. amboinicus in remedies, healthcare preparations and products derived from it are limited; it has, thus, received little attention for practical use. Notably, no prior research related to the P. amboinicus species in Dak Lak has been conducted. Therefore, this study aims to determine the chemical composition and biological properties of P. amboinicus to aid in its exploitation and effective utilization. Material and Methods ChemicalsAscorbic acid, DPPH, Tween 80, a homologous series of C7-C30 straight-chain hydrocarbons, and various reference chemicals for identification were procured from Sigma-Aldrich Chemical Co. (St Louis, MO, USA). All other chemicals, including those of analytical grade, were acquired from Merck (Darmstadt, Germany). The culture media and standard antibiotic discs were obtained from Oxoid Ltd.