Evaluación in vitro de la acción de lactobacillus plantarum con características probióticas sobre yersinia pseudotuberculosis

With the objective to check the potential probiotic of Lactobacillus plantarum on one of themost frequent diseases in guinea pig (Cavia porcellus) caused by Yersinia pseudotuberculosis, tests were conducted of inhibition and comparisonin front of antibiotics, showing favorable results, the inhibitt othe pathogenic bacterium. It valued by HPLC the possible peptides produced by L. plantarum, characterizing an presence of two peptides. Tests were performed for the selection of lactic bacteria which showed the following profile: catalase-negative, not producer of gas, resistant to bile salts (0, 5%, 1%, 2% and 3%), pH (2,5, 3,5 and 7,6) and temperature of 38 at 45°C. Also determined the characteristics of the kinetics of fermentation, using two mediums, where it is evaluated CFU/mL, pH, consumption of total sugars (mg/L) and production of lactic acid (%); Lactobacillus plantarum reached the exponential phase of growth in the mediums MRS and Pro, at the 12 and 14:24 hours, with values of 7,0x1011 UFC/mL and 5,0x1013 UFC/mL, respectively. A design of blocks was applied at random with two treatments and eleven blocks, the result allowed to determine that it doesn't exist significant statistical differences (P>0,05) between the proposed means, but if between the hours of evaluation (P