ANTIMICROBIAL AND ANTIOXIDANT PROPERTIES OF THYME (Thymus vulgaris L.), ROSEMARY (Rosmarinus officinalis L.) AND LAUREL (Lauris nobilis L.) ESSENTIAL OILS AND THEIR MIXTURES

Abstract

In this study, the antimicrobial and antioxidant properties of thyme (TEO), rosemary (REO) and laurel essential oils (LEO) and their mixtures (TEO/REO, TEO/LEO, REO/LEO, 1/1, v/v and TEO/REO/LEO, v/v/v, 1/1/1) were investigated. The antimicrobial activity was measured by the agar well diffusion method, while antioxidant capacity was measured using the FRAP and DPPH scavenging activity methods. All essential oils and their mixtures showed antimicrobial activity and antioxidant capacity. The highest antimicrobial activity against S. aureus, E. coli O157:H7 and L. monocytogenes was determined in TEO with zone diameters of 39.33, 28.00 and 30.67 mm, respectively. In general, essential oil mixtures negatively affected the antimicrobial activity compared to essential oils alone, and E. coli O157:H7 was less sensitive to the inhibitory activity of essential oils and their mixtures than S. aureus and L. monocytogenes. The FRAP values of all essential oils and mixtures ranged from 3.67 (REO) to 40.30 mg/mL (LEO), while the DPPH scavenging activity values ranged from 21.31 (REO) to 89.48% (TEO/LEO). These results suggest that essential oils obtained from thyme, rosemary, laurel and their mixtures have potential to be used as natural antimicrobial and antioxidant agents in the food industry. Keywords: Antimicrobial activity, antioxidant capacity, thyme essential oil, rosemary essential oil, laurel essential oil KEKİK (Thymus vulgaris L.), BİBERİYE (Rosmarinus officinalis L.) VE DEFNE (Lauris nobilis L.) UÇUCU YAĞLARININ VE KARIŞIMLARININ ANTİMİKROBİYAL VE ANTİOKSİDAN ÖZELLİKLERİ Öz

The effect of Thymus vulgaris L. on renal and liver toxicity in wistar rats exposed to aluminum

“…T. vulgaris L. has been commonly used since ancient times in the treatment of burns and poisoning caused by snakes and scorpions. It is an aromatic medicinal herb which is widely used in traditional folk medicine for its antimicrobial effects (Hosseinzadeh et al, 2015), anti-inflammatory and antalgic effects, antioxidant benefits (Tural and Turhan, 2017) and its antifungal properties (Benabed et al, 2018). It is also recognized for its antispasmodic, antiseptic, anthelmintic, diuretic and sedative properties (Hosseinzadeh et al, 2015).…”

Effects of The Dietary Supplementation of Layer Diets with Natural and Synthetic Antioxidant Additives on Yolk Lipid Peroxidation and Fatty Acid Composition of Eggs Stored at Different Temperatures and Duration

“…eRBCA-2019-0991 have antibacterial, antifungal, anti-inflammatory, antitumoral, analgesic, antipyretic, cardiac tonic, antiasthmatic, and antioxidant effects (Hameed & Mohammed, 2017). It is stated that essential oils obtained from thyme, rosemary, and laurel can be used as natural antimicrobial and antioxidant agents in food industry (Tural & Turhan, 2017). Eleven different oils, including thyme and rosemary oils, have been reported to be natural antioxidants and antimicrobial agents (Sacchetti et al, 2005).…”

The Effect of Thymus Vulgaris on the Respiratory Activity of Uropathogenic Escherichia Coli

“…Essential oils are plant secondary metabolites and are extracted from different parts of plants: leaves, barks, flowers, seeds, buds, twigs and fruits (Zaouali et al, 2010). Many different essential oils are important sources of natural antioxidants, so they have been used in pharmacology, medicine and food and cosmetic industries (Tural and Turhan, 2017;Zaouali et al, 2010).…”