FIG. 3.

Bactericidal activities of 3 ppm of peracetic acid and 10 mg of didecyl dimethyl ammonium bromide (DDAB)/liter against Salmonella Typhimurium previously grown without antimicrobials (control) or with antimicrobial compounds at level 3 (one compound alone at concentration C or combinations of three compounds at concentration A). Th refers to thymol, Ca to carvacrol, Ci to citral, and Eu to eugenol. An asterisk indicates a significant difference from the control with respect to log reduction.