China Animal Husbandry and Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (1): 195-204.doi: 10.16431/j.cnki.1671-7236.2025.01.017

• Nutritionand Feed • Previous Articles    

Evaluation of Adsorption Effect of Three Aluminosilicate Adsorbents and Mannooligosaccharides on Five Mycotoxins

YU Yingying1, WANG Caidie1, ZANG Changjiang1, LI Mengfei1, XU Zihao1, SUN Long1, HOU Min2, LI Xiaobin1, LI Fengming1   

  1. 1. Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China;
    2. Xinjiang Laboratory of Special Environmental Microbiology, Institute of Applied Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
  • Received:2024-05-08 Published:2024-12-30

Abstract: 【Objective】 Feed in the storage process due to moisture content,environmental temperature,humidity and other factors,feed is prone to mildew and produce mycotoxins,how to reduce the mycotoxins contamination of feed is an urgent problem to be solved currently.The aim of this experiment was to study the effects of three aluminosilicate adsorbents,namely attapulgite,permutite and montmorillonite,and mannooligosaccharides on five toxins,namely,aflatoxin B1 (AFB1),deoxynivalenol (DON),zearalenone (ZEN),ochratoxins A (OTA) and T-2 toxin in vitro. 【Method】 The adsorption rates of attapulgite,permutite,montmorillonite and mannooligosaccharides at the addition of 0.25%,0.5%,1% and 2%,respectively,as well as the adsorption and desorption rate of each adsorbent at different pH were determined by enzyme-linked immunosorbent assay (ELISA). 【Result】 ① The addition amount,adsorbent and interaction between the two had extremely significant effect on the adsorption rates of five toxins (P<0.01).Among them,compared with the other three additions,the adsorption rate of five toxins was extremely significantly higher at 2% addition (P<0.01),the adsorption rate of montmorillonite on five toxins was extremely significantly higher than that of attapulgite,permutite and mannooligosaccharides (P<0.01).② Under the condition of the same additive amount,the adsorption rates of AFB1 by mannooligosaccharide,attapulgite and montmorillonite at pH 10.0 were extremely significantly higher than those at pH 4.0 (P<0.01),the adsorption rate of four adsorbents on DON were extremely significantly higher at pH 10.0 than those at pH 4.0 (P<0.01).Permutite adsorption of OTA at pH 10.0 was extremely significant higher than that at pH 4.0 (P<0.01),and the OTA adsorption rate of attapulgite at pH 4.0 was extremely significantly higher than that of pH 10.0 (P<0.01).At 1% addition,four adsorbents adsorbed ZEN and T-2 toxins at pH 10.0 were extremely significantly higher than those at pH 4.0 (P<0.01).At the addition of 0.5%,mannooligosaccharides and permutite adsorbed ZEN at pH 10.0 were extremely significantly higher than those at pH 4.0 (P<0.01), and attapulgite,permutite and montmorillonite adsorbed T-2 toxin at pH 4.0 were extremely significantly higher than those at pH 10.0 (P<0.01).③ After adding PBS with pH 7.0 to the centrifugal precipitation at pH 4.0,the desorption rate of montmorillonite was extremely significantly lower than that of attapulgite and permutite (P<0.01).After adding methanol to the centrifugal precipitation at pH 7.0 again,the desorption rates of montmorillonite and permutite were extremely significantly lower than those of attapulgite (P<0.01). 【Conclusion】 The adsorption rates of four adsorbents on AFB1,DON,ZEN,OTA and T-2 toxins at 2% addition were montmorillonite > permutite > attapulgite > mannooligosaccharides in descending order.Four adsorbents adsorbed higher on AFB1,DON and ZEN at pH 10.0 and 1% addition,and after the adsorption environment at pH 4.0 was changed to pH 7.0 or methanol,the adsorption rate of three adsorbents on DON,ZEN,OTA and T-2 toxins were montmorillonite > permutite > attapulgite in desorption rate from low to high.

Key words: adsorbent; mannooligosaccharides; mycotoxin; ELISA

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