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OJVRTM
Online Journal of Veterinary Research©
(Including Medical and Laboratory Research)
Established 1994
ISSN 1328-925X
Volume 27 (8): 467-471, 2023.
Antimicrobial and antifungal effects of Echinacea purpurea
and Thymus vulgaris extracts on food
pathogens.
Hamid
Reza Gheisari1, Hassan Habibi2.
1Food Hygiene Department and 2Avian Diseases Research Center, School
of Veterinary Medicine, Shiraz University, Iran
ABSTRACT
Gheisari HR, Habibi H., Antimicrobial effects of Echinacea purpurea and Thymus vulgaris extracts on food pathogens, Onl J Vet Res., 27 (8):
467-471, 2023. Antibacterial activity of methanolic
extracts of Echinacea
purpurea and
Thymus vulgaris on food pathogens were investigated. Air-dried plant materials were ground to fine powder
and extracted by Soxhelet apparatus with methanol.
The extract was tested at a concentration of 20mg/ml against a panel of food
pathogen bacteria and fungi by tube dilution. For T. vulgaris
Minimum inhibitory concentrations (MIC) varied 0.625-2.5 and E. purpura 0.31--2.5mg/ml. Extracts had
same MIC against Listeria monocytogenes
and Staphylococcus aureus whereas T. vulgaris extract were
more effective against Salmonella typhimorium and
Escherichia coli O157: H7. Bacillus subtilis and Proteus vulgaris were inhibited by E. purpurea.
Only 16 times dose of T vulgaris inhibited
fungi Aspergilosis flavus (MIC =
40 mg/ml, fungal inhibition = 160 mg/ml). We find that extracts exhibited
antibacterial effects but had no antifungal activity.
Key words: Echinacea purpurea; Thymus vulgaris; Antimicrobial activities; Food pathogens.