Evaluation of nonionic surfactant modified montmorillonite as mycotoxins adsorbent for aflatoxin B1 and zearalenone

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:518

Article

Wang, Gaofeng^1,2  Lian, Chi¹  Xi, Yunfei²  Sun, Zhiming¹  Zheng, Shuilin¹ 

[1] China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China

[2] QUT, Sch Earth Environm & Biol Sci, Sci & Engn Fac, 2 George St, Brisbane, Qld 4001, Australia

关键词: Mycotoxins adsorbent;    Montmorillonite;    Nonionic surfactant;    Aflatoxin B-1;    Zearalenone;   

DOI  :  10.1016/j.jcis.2018.02.020

来源: Elsevier

【 摘 要 】

This work aims at exploring the potential of nonionic surfactant octylphenol polyoxyethylene ether (OP-10) modified montmorillonites (NMts) as mycotoxins adsorbent. The resulting NMts has different structural configurations, organic carbon contents, surface hydrophobicity and textural properties at different surfactant loadings. The prepared NMts were used for adsorption of polar aflatoxin B-1 (AFB(1)) and weak polar zearalenone (ZER) in both single and binary-contaminate systems by simulating conditions of gastrointestinal tract. The adsorption capacities of NMts to AFB(1) and ZER increased up to 2.78 and 8.54 mg/g respectively from 0.51 and 0.00 mg/g of raw montmorillonite (Mt). High adsorption capacities of NMts to AFB(1) and ZER could be reached at low surfactant loadings. There was little decrease from pH of 3.5 to 6.5 but became negligible with increasing the surfactant loadings. In binary-contaminate adsorption system, the adsorption of ZER was obviously affected by the existence of AFB(1), while ZER had little effect on the adsorption process of AFB(1) due to different adsorption mechanism. This study demonstrates that NMts could be a promising adsorbent for simultaneous detoxification of polar and non-polar mycotoxins. (C) 2018 Elsevier Inc. All rights reserved.

【 授权许可】

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