School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; School of Earth, Environmental and Biological Sciences, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4001, Australia.
School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
J Colloid Interface Sci. 2018 May 15;518:48-56. doi: 10.1016/j.jcis.2018.02.020. Epub 2018 Feb 7.
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 (AFB) 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 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 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, while ZER had little effect on the adsorption process of AFB due to different adsorption mechanism. This study demonstrates that NMts could be a promising adsorbent for simultaneous detoxification of polar and non-polar mycotoxins.
本研究旨在探索非离子表面活性剂辛基酚聚氧乙烯醚（OP-10）改性蒙脱石（NMts）作为霉菌毒素吸附剂的潜力。结果表明，NMts 在不同的表面活性剂负载下具有不同的结构构型、有机碳含量、表面疏水性和织构性质。通过模拟胃肠道条件，将制备的 NMts 用于吸附极性黄曲霉毒素 B（AFB）和弱极性玉米赤霉烯酮（ZER）在单污染和双污染体系中的吸附。NMts 对 AFB 和 ZER 的吸附容量分别从原始蒙脱石（Mt）的 0.51mg/g 和 0.00mg/g 增加到 2.78mg/g 和 8.54mg/g。在低表面活性剂负载下，NMts 对 AFB 和 ZER 具有较高的吸附容量。在 pH 值为 3.5 到 6.5 之间，吸附容量仅有少量下降，但随着表面活性剂负载的增加，吸附容量可忽略不计。在双污染吸附体系中，ZER 的存在明显影响了 ZER 的吸附，而由于不同的吸附机制，ZER 对 AFB 的吸附过程影响较小。本研究表明，NMts 可能是一种同时脱除极性和非极性霉菌毒素的有前途的吸附剂。
