GC-MS analysis of chemical composition and determination of
antimicrobial activity of Laurel Leaf Extracts prepared by different
methods and solvents
Ayşe Kanıcı Tarhane1*, Serdal Tarhane2, İnan
Dursun3,4, Fatih Büyük5, Mustafa Reha Coşkun5
and Yaren Ersoy6
1Kafkas
University, Faculty of Veterinary Medicine, Department of
Pharmacology and Toxicology, Kars, Türkiye; 2Çankırı
Karatekin University, Eldivan Vocational School of Health Services,
Veterinary Department, Laborant and Veterinary Health Program, Çankırı, Türkiye; 3Bingöl
University, Center of Research and Application Center, 12000 Bingöl,
Türkiye; 4Bingöl University, Department of Crop and
Animal Production, Vocational School of Food, Agriculture and
Livestock, 12000 Bingöl, Türkiye; 5Kafkas University,
Faculty of Veterinary Medicine, Department of Microbiology, Kars,
Türkiye; 5Kafkas University, Faculty of Veterinary
Medicine, Department of Microbiology, Kars, Türkiye; 6Kafkas
University, Faculty of Veterinary Medicine, Health Sciences
Institute, Kars, Türkiye
*Corresponding author:
ayse.kanici@kafkas.edu.tr
Abstract
This study aimed to
investigate the chemical composition and antimicrobial activity of laurel leaf
extracts obtained using different methods and solvents. Extraction was performed
using the Soxhlet, ultrasound-assisted, and orbital shaker methods with water,
ethanol, methanol, ethyl acetate, acetone, hexane and chloroform. The chemical
compositions of the extracts were analyzed with agas chromatograph coupled to a mass spectrometer and a flame ionization
detector (GC-MS-FID). The GC-MS-FID results were compared to data of the Wiley
and National Institute of Standards and Technology (NIST) libraries to identify
the chemical composition of the analytes. The antimicrobial activities of the
extracts against Staphylococcus aureus
NCTC10788, Bacillus cereus NCTC7464,
Salmonella typhi NCTC11994,
Listeria monocytogenes ATCC11994 and
Escherichia coli NCTC2001 were
determined with in-house disc diffusion testing. The highest efficiency
was achieved using the Soxhlet method and methanol (49.11%). Among the solvents
tested, hexane, and among the methods used, ultrasound-assisted extraction
exhibited the lowest efficiency (P<0.05). The extracts showed a stronger
inhibitory effect on Gram-positive bacteria (P<0.05). The highest level of
antimicrobial activity was achieved against S. aureus with the use of the
stock solution concentrations of the extracts obtained with the combined use of
the ultrasound-assisted method and the solvents ethanol, ethyl acetate, acetone
and hexane. The bacteria most resistant to almost all concentrations of the
laurel leaf extracts were S. typhi, E. coli and L.
monocytogenes. The method and solvent for extraction should be chosen
carefully, depending on the targeted molecules and desired activity.
To Cite This Article:
Tarhane AK, Tarhane S,
Dursun İ, Büyük F, Coşkun MR and Ersoy Y, 2024.
GC-MS analysis of chemical composition and determination of antimicrobial
activity of Laurel Leaf Extracts prepared by different methods and solvents.
Pak Vet J, 44(3): 619-628.
http://dx.doi.org/10.29261/pakvetj/2024.207