Adsorption of aflatoxin B1 by different antimycotoxin additives: bentonite, clinoptilolite, and beta-glucans extracted from yeast cell wall
The present study aims to evaluate and compare antimycotoxin additives (AMAs) composed of bentonite (AMA 1), clinoptilolite (AMA 2), and beta-glucans extracted from yeast cell wall (AMA 3), with respect to their ability to bind Aflatoxin B1 (AFB1) using the isothermal models of Freundlich, Langmuir,...
- Autores:
-
Medianeira de Lima Schlösser, Luara
Simões, Cristina Tonial
Alves Sarturi, Janine
Rosa da Silva, Cristiane
Fabris Laber, Isadora
Dison S.P., Franco
Mallmann, Carlos Augusto
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2023
- Institución:
- Corporación Universidad de la Costa
- Repositorio:
- REDICUC - Repositorio CUC
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.cuc.edu.co:11323/13293
- Acceso en línea:
- https://hdl.handle.net/11323/13293
https://repositorio.cuc.edu.co/
- Palabra clave:
- Adsorption isotherm
Aflatoxin B1
Antimycotoxin additives
In vitro test
- Rights
- embargoedAccess
- License
- Atribución 4.0 Internacional (CC BY 4.0)
| Summary: | The present study aims to evaluate and compare antimycotoxin additives (AMAs) composed of bentonite (AMA 1), clinoptilolite (AMA 2), and beta-glucans extracted from yeast cell wall (AMA 3), with respect to their ability to bind Aflatoxin B1 (AFB1) using the isothermal models of Freundlich, Langmuir, and BET. The additives were submitted to an in vitro adsorption experiment with AFB1 (0.05–4 mg L−1), using solutions of pH 3 and pH 6, with an inclusion rate of 0.5%, and analyzed by HPLC–MS/MS. At pH 3, for the seven concentrations evaluated, AMA 1 obtained adsorption rates (99.69 to 99.98%) higher (p < 0. 05) than the other AMAs, which were from 82.97 to 88.72% (AMA 2) and from 79.43 to 89.32% (AMA 3). At pH 6, in concentrations of 1, 2, and 4 mg L−1 of AFB1, AMA 1 obtained higher (p < 0.05) adsorption results (97.86 to 99.86%) than AMA 2 (91.98 to 96.12%) and AMA 3 (87.56 to 93.50%). The Freundlich model best fitted the AMA 1 adsorption data. For the other additives, the Langmuir model obtained the best fit, demonstrating qm of 8.6 mg g−1 at pH 3 and 2.3 mg g−1 at pH 6 for AMA 2; and for AMA 3, with qm of 3.4 mg g−1 at pH 3 and 2.3 mg g−1 at pH 6. The isotherm models work as an effective tool to describe the adsorption process whereas the AMA adsorption capacity varies as a function of product composition, pH, and mycotoxin content. |
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