Antibacterial activities of essential oils and extracts of TurkishAchillea, SaturejaandThymusspecies against plant pathogenic bacteria

Abstract

Our results demonstrate that S. spicigera, T. fallax oils, carvacrol and thymol could become potentials for controlling certain important agricultural plant pathogenic bacteria and seed disinfectant.

Chemical Composition and Antimicrobial Activity of Essential Oils ofOcimum basilicum,Ocimum canumandOcimum gratissimumin Function of Harvesting Time

“…Among previously published studies, the antibacterial activity of thymol-containing oil of O. gratissimum was only reported in the work of Ngassoum and co-authors 37 against some Gramnegative and Gram-positive bacteria other than L. monocytogenes and S. Typhimurium. Thymol was also previously shown to possess antimicro-bial activities [42][43][44][45] and inhibition diameters obtained for thymol in the same concentration as in the different oils show that it is responsible for an important part of the activity, but other antimicrobial components are also present.…”

“…In this study, the highest antibacterial activity corresponded to the highest content in carvacrol (30.8 %) present in oil of O. canum harvested at 19h. Tests realized with pure carvacrol, known to possess antimicrobial activities [42][43][44][45] showed that it can almost completely explain the antibacterial activity of the oils.…”

In vitro activity, extraction, separation and structure elucidation of antibiotic produced by Streptomyces anulatus NEAE-94 active against multidrug-resistant Staphylococcus aureus

“…Karanja et al [40] also identified hexacosane from a novel Streptomyces isolate, RUJ7-1, from Ruma National Park by GC-MS analysis. Hexacosane has been shown to exhibit potent antibacterial activity against 25 phytopathogenic bacterial strains [54] and antioxidant activity [55]. Stearic acid 2-hydroxy-1-(hydroxymethyl) ethyl ester has antifungal activity [56].…”

Phytochemical Studies on Origanum rotundifolium

“…The essential oil of this plant shows various biological activities such as anti-oxidant, antibactial properties. These activities have been mainly attributed to constituents such as thymol, carvacrol, borneol, terpinenchemo type and spathulenol (Baser et al, 1993;Gormez et al, 2016;Goze et al, 2009;Kotan et al, 2010).…”