Zearalenone adsorption capacity of lactic acidbacteria isolated from pigs

MARÍA F. VEGA; SANDRA ARANGUREN; ALEJANDRO SORACI; ANA APAS; BELÉN RICCIO; LAURA DENZOIN ; ROMINA ROSS; SUSANA N. DIEGUEZ; ANTONIO GIORDANO; MARÍAO.TAPIA; SILVIA N. GONZALEZ

BRAZILIAN JOURNAL OF MICROBIOLOGY

SOC BRASILEIRA MICROBIOLOGIA

Año: 2017 vol. 1 p. 1 - 9

1517-8382

tThe ability to adsorb zearalenone by five strain of lactic acid bacteria was evaluated:four strains of Lactobacillus spp. isolated from pig rectal swabs and one commercial strain(Lactobacillus rhamnosus). Several factors affecting the adsorption capacity were evaluatedin order to improve the adsorption of the mycotoxin by bacteria. The stability of thezearalenone?bacteria complex was analyzed. In every case, bacterial adsorption capacitywas higher than 40.0%. The strain showing the highest adsorption (68.2%) was selected forthe following steps of this research. The adsorption percentages obtained after processing6.5 and 7.5 mL MRS broth were 57.40% + 3.53 and 64.46% + 0.76, respectively. The stabilityof zearalenone?bacteria complex was evaluated by successively rinsing. In the first rins-ing step 42.26% + 0.414 was still bound. In the second rinsing step 25.12% + 0.664 was stillbound, whereas 15.82% + 0.675 remained in the pellet after the third rinse. Results obtaineddemonstrated that Lactic Acid Bacteria has capacity to adsorb zearalenone. Finally adsorp-tion was increased using a higher volume of initial broth. These results could be used todesign a new lyophilized powder for detoxification, using lactic acid bacteria as potentialzearalenone adsorbents.