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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

AIMS:

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.

METHODS AND RESULTS:

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.

CONCLUSIONS:

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.