一种新型吸附剂——用十六烷基吡啶氯改性的钠长石，用于高效去除玉米赤霉烯酮。
A Novel Adsorbent Albite Modified with Cetylpyridinium Chloride for Efficient Removal of Zearalenone.
机构信息
Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China.
出版信息
Toxins (Basel). 2019 Nov 18;11(11):674. doi: 10.3390/toxins11110674.
Zearalenone (ZEN) is a non-steroidal estrogenic mycotoxin and constitutes a potential health threat to humans and livestock. This study aimed to explore the potential of albite modified by the cationic surfactant cetylpyridinium chloride (CPC) as ZEN adsorbent. The organoalbite (OA) was characterized by SEM analysis, XRD analysis, FTIR spectroscopy, thermal analysis, and BET gas sorption measurement. In vitro adsorption of ZEN by OA was carried out by simulating the pH conditions of the gastrointestinal tract. The characterization results showed that the surface of OA changed from hydrophilic to hydrophobic after modification. Adsorption kinetic studies showed that ZEN adsorption behavior of OA occurred by chemisorption. The equilibrium adsorption data fitted well with the Langmuir isotherm, indicating that the adsorption process of ZEN by OA was monolayer. The maximum adsorption capacity (q) values of OA for ZEN were 10.580 and 9.287 mg/g at pH 7 and pH 3, respectively. In addition, OA had a low desorption rate (about 2%), and co-existing amino acids (i.e., Lys and Met), vitamins (i.e., VB and VE), and minerals (i.e., Fe and Ca) did not affect the removal of ZEN. These results demonstrate that OA could be a promising mycotoxin adsorbent for removing the hydrophobic, weakly polar ZEN.
玉米赤霉烯酮（ZEN）是一种非甾体类雌激素真菌毒素，对人类和牲畜的健康构成潜在威胁。本研究旨在探索经阳离子表面活性剂十六烷基吡啶氯（CPC）改性的钠长石作为 ZEN 吸附剂的潜力。通过扫描电子显微镜分析、X 射线衍射分析、傅里叶变换红外光谱分析、热分析和 BET 气体吸附测量对有机钠长石（OA）进行了表征。通过模拟胃肠道的 pH 条件，进行了 OA 对 ZEN 的体外吸附研究。表征结果表明，OA 表面在改性后从亲水变为疏水。吸附动力学研究表明，OA 对 ZEN 的吸附行为是化学吸附。平衡吸附数据拟合 Langmuir 等温线较好，表明 OA 对 ZEN 的吸附过程是单层的。OA 对 ZEN 的最大吸附容量（q）值在 pH 7 和 pH 3 时分别为 10.580 和 9.287mg/g。此外，OA 的解吸率较低（约 2%），共存的氨基酸（即 Lys 和 Met）、维生素（即 VB 和 VE）和矿物质（即 Fe 和 Ca）不影响 ZEN 的去除。这些结果表明，OA 可能是一种很有前途的真菌毒素吸附剂，可用于去除疏水性、弱极性的 ZEN。
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