title: [Antibacterial activity against 224 clinical bacterial strains of JCA 250 and JCA 251 compounds containing essential oils provided from Aroma Technologies research].
abstract: OBJECTIVE
  It was to determine the antibacterial spectrum of JCA 250 and JCA 251, two naturally occurring compounds from Aroma Technologies research, on a bacterial population isolated from clinical infections.
  
  
  METHODS
  Two hundred and twenty-four bacterial strains were tested. The minimum inhibitory concentrations (MIC) of JCA 250 and JCA 251 were determined by agar dilution method. Tests were performed in triplicate.
  
  
  RESULTS
  The mean MIC was 0.20% for JCA 250 and 0.15% for JCA 251. JCA 251 regularly exhibited greater activity. All Enterobacteriaceae were inhibited at concentrations less or equal to 0.15% for JCA 250 or JCA 251. For strict aerobes, the MIC values were more spread out. Two Pseudomonas aeruginosa strains differed from the population with JCA 251 MIC of 0.25 and 0.40%. Concerning Gram-positive cocci, all the strains were inhibited with less or equal to 0.25% of compound. The most resistant population were the Enterococci and the Lactobacilli, with MIC more or equal to 0.2% for JCA 250 or JCA 251. Anaerobes showed MIC closely grouped for a heterogeneous bacterial group. One Propionibacterium sp. strain came apart from the group and was inhibited with a MIC of 0.5%.
  
  
  CONCLUSIONS
  The overall results showed an interesting antibacterial activity on bacteria isolated from clinical samples. Most of the bacterial strains were inhibited at a concentration of 0.2%. The highest mean values were obtained for commensal bacteria from the flora, which is of particular interest in this study.
authors.affiliation: Laboratoire de bactériologie-hygiène hospitalière, CHU d'Angers, 4, rue Larrey, 49933 Angers cedex 9, France. makempf@chu-angers.fr
authors.forename: M
authors.initials: M
authors.lastname: Kempf
authors.forename: M
authors.initials: M
authors.lastname: Eveillard
authors.forename: F
authors.initials: F
authors.lastname: Kowalczyk
authors.forename: E
authors.initials: E
authors.lastname: Rossines
authors.forename: G
authors.initials: G
authors.lastname: Panhelleux
authors.forename: M-L
authors.initials: ML
authors.lastname: Joly-Guillou
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D004353:Drug Evaluation, Preclinical; D066298:In Vitro Techniques; D008826:Microbial Sensitivity Tests; D009822:Oils, Volatile / Q000494:pharmacology*; D010938:Plant Oils / Q000494:pharmacology*; D013045:Species Specificity
chemical_list: D000900:Anti-Bacterial Agents; D009822:Oils, Volatile; D010938:Plant Oils