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Title: Antimicrobial and antioxidant activities of turkish extra virgin olive oils
Authors: Karaosmanoğlu, Hande
Soyer, Ferda
Özen, Banu
Tokatlı, Figen
Keywords: Antimicrobial activity
Antioxidant activity
Listeria monocytogenes
Olive oil
Phenolic compounds
Salmonella Enteritidis
Issue Date: Jul-2010
Publisher: American Chemical Society
Source: Karaosmanoğlu, H., Soyer, F., Özen, B., and Tokatlı, F. (2010). Antimicrobial and antioxidant activities of turkish extra virgin olive oils. Journal of Agricultural and Food Chemistry, 58(14), 8238-8245. doi:10.1021/jf1012105
Abstract: Turkish extra virgin olive oils (EVOO) from different varieties/ geographical origins and their phenolic compounds were investigated in terms of their antimicrobial and antioxidant properties in comparison to refined olive, hazelnut, and canola oils. Antimicrobial activity was tested against three foodborne pathogenic bacteria, Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella Enteritidis. Although all EVOOs showed a bactericidal effect, the individual phenolic compounds demonstrated only slight antimicrobial activity. Moreover, refined oil samples did not show any antimicrobial activity. Among the phenolic compounds, cinnamic acid (2 mg/kg of oil) had the highest percent inhibition value with 0.25 log reduction against L. monocytogenes. The synergistic interactions of tyrosol, vanillin, vanillic, and cinnamic acids were also observed against Salmonella Enteritidis. The antioxidant activities of oils were tested by β-carotene-linoleate model system and ABTS method. In both methods, EVOOs showed higher antioxidant activities, whereas refined oils had lower activity. The ABTS method provided a higher correlation (0.89) with total phenol content. © 2010 American Chemical Society.
ISSN: 0021-8561
Appears in Collections:Molecular Biology and Genetics / Moleküler Biyoloji ve Genetik
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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