title: The effects of thyme (Thymus vulgaris) and rosemary (Rosmarinus officinalis) essential oils on Brochothrix thermosphacta and on the shelf life of beef packaged in high-oxygen modified atmosphere.
abstract: The objective of the study was to determine the Minimal Inhibitory Concentration (MIC) of thyme (29.4% thymol, 21.6% p-cymene) and rosemary essential oils (27.6% 1,8-cineole, 13.5% limonene, 13.0% β-pinene) against Brochothrix thermosphacta and to establish the feasibility of their use as components of modified atmosphere during beef refrigerated storage. The minimum inhibitory concentration (MIC) of thyme oil against B. thermosphacta is 0.05% and that of rosemary oil 0.5%. The MIC values are independent on strain and temperature of growth, however the bactericidal effects are strain dependent. The addition of any of oil at a concentration equal to 2MIC to the modified atmosphere (80% O(2)/20% CO(2)) does not significantly influence the microbial quality of meat. At the same time, such a concentration of the essential oils was considerably detrimental to the organoleptic factors.
authors: Institute of Fermentation Technology and Microbiology, Technical University of Lodz, Wolczanska 171/173, 90-924 Lodz, Poland. agnieszka.nowak@p.lodz.pl
authors: Agnieszka
authors: A
authors: Nowak
authors: Danuta
authors: D
authors: Kalemba
authors: Lucjan
authors: L
authors: Krala
authors: Malgorzata
authors: M
authors: Piotrowska
authors: Agata
authors: A
authors: Czyzowska
mesh_terms: D000818:Animals; D058640:Brochothrix / Q000187:drug effects* / Q000254:growth & development; D002417:Cattle; D005519:Food Preservation / Q000379:methods*; D061353:Food Storage; D008460:Meat / Q000032:analysis / Q000382:microbiology*; D008826:Microbial Sensitivity Tests; D050296:Microbial Viability / Q000187:drug effects*; D009822:Oils, Volatile / Q000737:chemistry / Q000494:pharmacology*; D010100:Oxygen / Q000032:analysis; D010938:Plant Oils / Q000737:chemistry / Q000494:pharmacology*; D027542:Rosmarinus / Q000737:chemistry*; D046930:Thymus Plant / Q000737:chemistry*
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils; D010100:Oxygen