Activated Carbons: In Vitro Affinity for Aflatoxin B1 and Relation of Adsorption Ability to Physicochemical Parameters
- 1 May 1996
- journal article
- Published by Elsevier in Journal of Food Protection
- Vol. 59 (5) , 545-550
- https://doi.org/10.4315/0362-028x-59.5.545
Abstract
Affinity in vitro tests were conducted of the efficacy of 17 activated carbons (ACs) in binding aflatoxin B1 from solution. Relationships between adsorption ability and physicochemical parameters of the ACs (surface area, iodine number, methylene blue index, and surface acidity) were tested. Using 5 ml of a 4 μg/ml aqueous solution of aflatoxin B1 and 2 mg of an AC, adsorption abilities ranged from 44.47% to 99.82%. Four ACs showed very high adsorption abilities, binding more than 99% of the available aflatoxin B1. In comparative testing five ACs showed a greater ability to bind aflatoxin B1 than hydrated sodium calcium aluminosilicate (HSCAS). Three ACs also showed high adsorption abilities (ca. 99%) at increasing aflatoxin B1 concentrations (50 and 250 μg/ml) whereas HSCAS adsorption ability greatly declined. With the exception of three ACs, aflatoxin B1 adsorption was significantly correlated with all the physicochemical parameters, confirming a close relationship between molecule trapping and the surf...This publication has 0 references indexed in Scilit: