›› 2014, Vol. 41 ›› Issue (11): 133-138.

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Study on Adsorption of Montmorillonite and Attapulgite to Mycotoxins

LIANG Xiao-wei1,2, LI Fa-di1, ZHANG Jun-min2,4, MA Yue-pei2,3, ZHAO Qing-yu2,4, GAO Hong-liang3   

  1. 1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    2. Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    3. East China Normal University, Shanghai 200062, China;
    4. CAAS-ICRAF joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing 100193, China
  • Revised:2014-09-17 Online:2014-11-20 Published:2014-12-06

Abstract: The aim of this study was to determine the adsorption and desorption of aflatoxin B1 (AFB1),zearalenone,T-2 toxin to montmorillonite and attapulgite in the artificial gastric juice and intestinal juice. The results showed that the adsorption equilibrium of AFB1,zearalenone,T-2 toxin to montmorillonite and attapulgite were established within 1 h. The adsorption rates of AFB1 and T-2 toxin to sodium montmorillonite were 96.8%,38%,respectively. Zearalenone adsorbed by montmorillonite and attapulgite were less than 10%.The pH of artificial intestinal fluid had a significant influence on adsorbing mycotoxins (P<0.05).The adsorption rate of AFB1 to sodium montmorillonite was larger at pH 5 than pH 3 and pH 7 (P<0.05),90.1%.High adsorption efficiency of zearalenone to montmorillonite and attapulgite was achieved at pH 3.The adsorption rate of T-2 toxin to montmorillonite and attapulgite was larger at pH 7 than pH 3 and pH 5 (P<0.05).The complex compound formed by montmorillonite or attapulgite with mycotoxins has the desorption phenomena,expecially AFB1 and zearalenone.Because of the adsorption of AFB1,zearalenone,T-2 toxin to montmorillonite and attapulgite,they are important adsorbent.However,the desorption phenomena should not be neglected.Selection of montmorillonite or attapulgite as a feed additive should be considered their adsorption and desorption in practice.

Key words: montmorillonite; attapulgite; aflatoxin B1; zearalenone; T-2 toxin

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