上海食品快速检测工程技术研究中心,上海理工大学 健康科学与工程学院,上海 200093
叶泰,博士,副教授,研究方向:食品安全快速检测,E-mail:taiye@usst.edu.cn
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刘宇,叶泰,曹慧等.交联型“纳米花”酶用于拟除虫菊酯农药的高效水解研究[J].分析测试学报,2022,41(06):896-902.
LIU Yu,YE Tai,CAO Hui,et al.Study on Efficient Hydrolysis of Pyrethroid Pesticide Using a Cross-linked “Nanoflower” Enzyme[J].Journal of Instrumental Analysis,2022,41(06):896-902.
刘宇,叶泰,曹慧等.交联型“纳米花”酶用于拟除虫菊酯农药的高效水解研究[J].分析测试学报,2022,41(06):896-902. DOI: 10.19969/j.fxcsxb.21110602.
LIU Yu,YE Tai,CAO Hui,et al.Study on Efficient Hydrolysis of Pyrethroid Pesticide Using a Cross-linked “Nanoflower” Enzyme[J].Journal of Instrumental Analysis,2022,41(06):896-902. DOI: 10.19969/j.fxcsxb.21110602.
该文制备了交联型猪肝酯酶杂化“纳米花”酶(CL-PLE-NFs),并对其制备条件进行了优化。在最佳条件下,CL-PLE-NFs的酶活为游离酶的231%,最大反应速率(,V,max,)是游离酶的134%。同时,将交联型纳米花酶在4 ℃下贮藏320 d后,仍能保留70.85%的活力,表现出良好的贮藏稳定性。此外,将CL-PLE-NFs应用于拟除虫菊酯类农药的水解实验,发现其对Ⅰ型和Ⅱ型的拟除虫菊酯类农药均有较优的水解能力,在5 min内对11种拟除虫菊酯农药的水解率均在55%以上。同时,循环使用12次后,CL-PLE-NFs对溴氰菊酯农药的水解效率仍然可达65.37%。
Cross-linked porcine liver esterase hybrid“nanoflower”enzyme(CL-PLE-NF) was prepared via biomineralization coupling wet cross-linking,and the preparation conditions were optimized. Under the optimum conditions,the activity and maximum reaction rate of CL-PLE-NFs exhibited 231% and 134% those of free enzyme,respectively.After stored at 4 ℃ for 320 days,the CL-PLE-NFs still retained 70.85% of initial activity,which indicates its good storage stability.Additionally,pyrethroid pesticides were employed to investigate the hydrolysis performance of CL-PLE-NFs.It was found that eleven kinds of pyrethroid pesticides,including type Ⅰ and type Ⅱ,gave over 55% hydrolysis efficiency in 5 min.After 12 cycles of use,the hydrolysis efficiency of Cl-PLE-NFs for detamethrin still maintained 65.37%.
戊二醛交联菊酯类农药酶解储藏稳定性可重复利用性
glutaraldehydecross-linkingpyrethroid pesticidedigestionstorage stabilityreusability
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