Antioxidant capacity of Lactobacillus spp bacteria with probiotic potential isolated from feces and duodenal content of dogs and cats

Abstract

The objective of this investigation was to determine whether lactic acid bacteria (BAL) isolated from faeces and duodenal content of cats and adult dogs, differ in terms of antioxidant capacity. The stool samples were taken directly from the anus, with sterile swab and duodenal contents (CD) by aspirate at the duodenum level by laparotomy under general anesthesia of the patient, the samples were placed in a glass tube containing 4.5 ml of Man Rogosa Sharpe broth (MRS) (Himedia^®) to then be cultivated by depletion in plates with MRS agar (Himedia^®) and isolated and identified by the API50CH identification kit. Once the strains were identified, conjugated dienes (DC) were determined by extraction with isopropanol, malondialdehyde (MDA) by the test for reactants with 2-thiobarbituric acid (TBARS), superoxide dismutase (SOD) and glutathione (GSH) by means of a kit. commercial. The bacteria isolated in both feces and CD were L. leuconostoc, L. plantarum and L. paracasei and the results obtained in the bacteria isolated from faeces were as follows: DC 0.00174 ± 0.00005 mol / mg PT, MDA 0 , 36 ± 0.037 nmol / mg PT; GSH 7.7 ± 0.6 U / g PT; SOD 22.0 ± 1.5 U / g PT while for bacteria isolated from CD was 0.00172 ± 0.00003 DC; MDA 0.40 ± 27; GSH 8.9 ± 0.4; SOD 22.1 ± 2.3; without presenting significant differences between the location of the extraction of the sample in any of the parameters. Conclusion: the isolated bacteria showed high antioxidant activity which is not affected by the anatomical location.