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Aflatoxin B adsorption/desorption dynamics in the presence of Lactobacillus rhamnosus RC007 in a gastrointestinal tract simulated model.

J Appl Microbiol; 2018 Sep 06.
Artículo en Inglés | MEDLINE | ID: mdl-30188600


1) to determine the aflatoxin B (AFB ) adsorption and desorption dynamics in the presence of L. rhamnosus RC007 under simulated transit of AFB at each gastrointestinal tract (GIT - saliva, stomach and intestine) stage consecutively and then, separately, 2) to study the ability of L. rhamnosus RC007 to biotransform AFB as a strategy that complements the adsorption process.


the AFB adsorption and desorption assay simulating the GIT passage of AFB (93.89 ng/g) in presence of L. rhamnosus RC007 (10 CFU/mL) was conducted. Moreover, lactic acid production was determined. Results demonstrated that predominant environmental conditions in salivary solution (SS) induced a low AFB adsorption, while the transit through the gastric solution (GS) and intestinal solution (IS) allowed high percentages of adsorption and did not generate significant AFB desorption.


The AFB adsorption and desorption dynamics in the presence of L. rhamnosus RC007 was favoured by gastric and intestinal environment. SIGNIFICANCE AND IMPACT OF STUDY: the knowledge of the adsorption dynamics of AFB with a microorganism of interest will allow predicting its behavior at each stage of the GIT. This article is protected by copyright. All rights reserved.