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Co-Immobilization of Enzymes and Metals on the Covalent-Organic Framework for the Efficient Removal of Mycotoxins
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-01-11 , DOI: 10.1021/acsami.2c20302 Caicai Fu 1 , Tianying Lu 1 , Xiao Dai 1 , Ping Ding 1 , Yonghua Xiong 1 , Jun Ge 2 , Xiaoyang Li 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-01-11 , DOI: 10.1021/acsami.2c20302 Caicai Fu 1 , Tianying Lu 1 , Xiao Dai 1 , Ping Ding 1 , Yonghua Xiong 1 , Jun Ge 2 , Xiaoyang Li 1
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Mycotoxin is an important contaminant in food and the environment. The conventional methods for detoxification of mycotoxins are plagued by high chemical consumption, secondary pollution, and specific equipment required. In this study, we propose a chemoenzymatic cascade reaction for mycotoxin removal in an effective and green manner using an enzyme-metal hybrid catalyst synthesized by compartmental co-immobilized glucose oxidase (GOx) and Fe3O4 nanoparticles (NPs) on a flower-shaped covalent organic framework (COF). The GOx-Fe3O4@COF hybrid catalyst exhibits excellent activity in mycotoxin removal due to the enrichment of mycotoxins in COF and the cooperative catalysis between GOx and Fe3O4 NPs. The degradation efficiency of aflatoxin B1 (AFB1) in the chemoenzymatic cascade reaction catalyzed by GOx-Fe3O4@COF is 3.5 times higher than that in the Fenton reaction catalyzed by Fe3O4@COF. The GOx-Fe3O4@COF hybrid catalyst is highly active in a wide pH range of 3.0–7.0, overcoming the limitation of the Fenton reaction that can only perform below pH 3.0. This study provides a powerful tool for the efficient removal of mycotoxins.
中文翻译：
酶和金属在共价有机骨架上的共固定化以有效去除霉菌毒素
霉菌毒素是食品和环境中的重要污染物。传统的霉菌毒素解毒方法存在化学品消耗高、二次污染和需要特定设备等问题。在这项研究中，我们提出了一种化学酶促级联反应，使用由区室共固定化葡萄糖氧化酶 (GOx) 和 Fe 3 O 4 纳米粒子 (NPs) 在花上合成的酶-金属杂化催化剂，以有效和绿色的方式去除霉菌毒素。形共价有机骨架 (COF)。由于霉菌毒素在COF中的富集以及GOx和Fe 3 O 4之间的协同催化，GOx-Fe 3 O 4 @COF杂化催化剂表现出优异的霉菌毒素去除活性纳米粒子。GOx-Fe 3 O 4 @COF催化的化学酶级联反应对黄曲霉毒素B 1 (AFB 1 )的降解效率是Fe 3 O 4 @COF催化的Fenton反应的3.5倍。GOx-Fe 3 O 4 @COF 杂化催化剂在 3.0-7.0 的宽 pH 范围内具有高活性，克服了芬顿反应只能在 pH 3.0 以下进行的限制。本研究为有效去除霉菌毒素提供了有力的工具。
更新日期：2023-01-11
中文翻译：
酶和金属在共价有机骨架上的共固定化以有效去除霉菌毒素
霉菌毒素是食品和环境中的重要污染物。传统的霉菌毒素解毒方法存在化学品消耗高、二次污染和需要特定设备等问题。在这项研究中，我们提出了一种化学酶促级联反应，使用由区室共固定化葡萄糖氧化酶 (GOx) 和 Fe 3 O 4 纳米粒子 (NPs) 在花上合成的酶-金属杂化催化剂，以有效和绿色的方式去除霉菌毒素。形共价有机骨架 (COF)。由于霉菌毒素在COF中的富集以及GOx和Fe 3 O 4之间的协同催化，GOx-Fe 3 O 4 @COF杂化催化剂表现出优异的霉菌毒素去除活性纳米粒子。GOx-Fe 3 O 4 @COF催化的化学酶级联反应对黄曲霉毒素B 1 (AFB 1 )的降解效率是Fe 3 O 4 @COF催化的Fenton反应的3.5倍。GOx-Fe 3 O 4 @COF 杂化催化剂在 3.0-7.0 的宽 pH 范围内具有高活性，克服了芬顿反应只能在 pH 3.0 以下进行的限制。本研究为有效去除霉菌毒素提供了有力的工具。
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