title: Combined antimicrobial effect of oregano essential oil and caprylic acid in minced beef.
abstract: Oregano essential oil (OEO) and caprylic acid (CA) are highly aromatic natural antimicrobials with limited individual application in food. We proved their combined additive effect when used in meat. Application of 0.5% CA and 0.2% OEO (v/w) with 0.1% of citric acid in vacuum packed minced beef inoculated with Listeria monocytogenes at a concentration of 5 log cells/g reduced counts of lactic acid bacteria by 1.5 log CFU/g and counts of psychrotrophic bacteria and L. monocytogenes by more than 2.5 log CFU/g at the end of storage at 3°C for 10 days. In sensory evaluation the samples with OEO showed during the whole experiment statistically better scores than control, whereas the samples treated with CA showed worse colour attributes.
authors.affiliation: University of Veterinary and Pharmaceutical Sciences Brno, Faculty of Veterinary Hygiene and Ecology, Department of Meat Hygiene and Technology, Brno, Czech Republic. hulankovar@vfu.cz
authors.forename: Radka
authors.initials: R
authors.lastname: Hulankova
authors.forename: Gabriela
authors.initials: G
authors.lastname: Borilova
authors.forename: Iva
authors.initials: I
authors.lastname: Steinhauserova
mesh_terms: D000818:Animals; D000890:Anti-Infective Agents / Q000494:pharmacology; D002210:Caprylates / Q000494:pharmacology*; D002417:Cattle; D055598:Chemical Phenomena; D015169:Colony Count, Microbial; D003116:Color; D003257:Consumer Product Safety; D005506:Food Contamination / Q000517:prevention & control; D005516:Food Microbiology; D018857:Food Packaging; D005519:Food Preservation; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007777:Lactobacillaceae / Q000187:drug effects / Q000254:growth & development; D008089:Listeria monocytogenes / Q000187:drug effects / Q000254:growth & development; D008460:Meat / Q000032:analysis / Q000382:microbiology*; D009812:Odorants / Q000032:analysis; D009822:Oils, Volatile / Q000494:pharmacology*; D031341:Origanum / Q000737:chemistry*; D014618:Vacuum
chemical_list: D000890:Anti-Infective Agents; D002210:Caprylates; D009822:Oils, Volatile; C031492:octanoic acid