Adsorption of aflatoxin B1 mycotoxins by raw and lyophilized bentonitic clay

•Raw and lyophilized polycationic bentonite for AFB1 adsorption;•AFB1 removal capacity above 90% for all studied samples;•Optimal conditions obtained for lower temperature and longer freezing time;•Liophilization does not change the cation exchange and adsorption capacities;