Investigations on organo-montmorillonites modified by binary nonionic/zwitterionic surfactant mixtures for simultaneous adsorption of aflatoxin B1 and zearalenone.,Journal of Colloid and Interface Science

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Investigations on organo-montmorillonites modified by binary nonionic/zwitterionic surfactant mixtures for simultaneous adsorption of aflatoxin B1 and zearalenone.
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2020-01-07 , DOI: 10.1016/j.jcis.2020.01.013
Zhiming Sun ₁ , Chi Lian ₁ , Chunquan Li ₁ , Shuilin Zheng ₁

Affiliation

To solve the problem of simultaneous adsorption of polar and weak polar mycotoxins, organo-montmorillonites modified by binary surfactant mixtures (NZMts), including polyoxyethylene ether (OP-10) and lauramidopropyl betaine (LAB-35), were synthesized for the simultaneous removal of aflatoxin B1 (AFB1) and zearalenone (ZER). The microstructure, interface and pore structure characteristics of NZMts were investigated through different technologies. The results show that the obtained NZMts modified by binary surfactant mixtures have different structural configurations, higher carbon content and stronger hydrophobicity compared with organo-montmorillonites modified by single surfactant. More importantly, the obtained adsorbents show significant improvements on the detoxification efficiency of both AFB1 and ZER. The pH has less effect on the adsorption of NZMts compared with the control samples modified by single surfactant, suggesting that NZMts are more stable in different pH environments. In addition, the adsorption mechanisms of NZMts to AFB1 and ZER were proposed based on the characterizations and adsorption isotherms. It is indicated that NZMts combines with AFB1 mainly through the hydrophobic interaction and ion dipole action, while with ZER mainly through hydrophobic interaction. The as-received NZMts with more hydrophobic property effectively enhance the adsorption capacities of weak polar and non-polar mycotoxins, providing a new orientation for multifunctional mycotoxin adsorbents.

中文翻译：

二元非离子/两性离子表面活性剂混合物改性的有机蒙脱土同时吸附黄曲霉毒素B1和玉米赤霉烯酮的研究。

为解决极性和弱极性真菌毒素同时吸附的问题，合成了由二元表面活性剂混合物（NZMts）改性的有机蒙脱土，包括聚氧乙烯醚（OP-10）和月桂酰氨基丙基甜菜碱（LAB-35），用于同时去除水中的霉菌毒素。黄曲霉毒素B1（AFB1）和玉米赤霉烯酮（ZER）。通过不同的技术研究了NZMts的微观结构，界面和孔结构特征。结果表明，与单表面活性剂改性的有机蒙脱土相比，二元表面活性剂混合物改性的NZMts具有不同的结构构型，较高的碳含量和较强的疏水性。更重要的是，所获得的吸附剂对AFB1和ZER的解毒效率均显示出显着改善。与单一表面活性剂修饰的对照样品相比，pH对NZMts的吸附影响较小，这表明NZMts在不同的pH环境中更稳定。此外，根据表征和吸附等温线，提出了NZMts对AFB1和ZER的吸附机理。结果表明，NZMts主要通过疏水相互作用和离子偶极作用与AFB1结合，而ZER主要通过疏水相互作用与ZER结合。如此获得的具有更大疏水性的NZMts有效地增强了弱极性和非极性真菌毒素的吸附能力，为多功能真菌毒素吸附剂提供了新的方向。根据表征和吸附等温线，提出了NZMts对AFB1和ZER的吸附机理。结果表明，NZMts主要通过疏水相互作用和离子偶极作用与AFB1结合，而ZER主要通过疏水相互作用与ZER结合。如此获得的具有更大疏水性的NZMts有效地增强了弱极性和非极性真菌毒素的吸附能力，为多功能真菌毒素吸附剂提供了新的方向。根据表征和吸附等温线，提出了NZMts对AFB1和ZER的吸附机理。结果表明，NZMts主要通过疏水相互作用和离子偶极作用与AFB1结合，而ZER主要通过疏水相互作用与ZER结合。如此获得的具有更大疏水性的NZMts有效地增强了弱极性和非极性真菌毒素的吸附能力，为多功能真菌毒素吸附剂提供了新的方向。

更新日期：2020-01-07

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