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.
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.
Study on Efficient Hydrolysis of Pyrethroid Pesticide Using a Cross-linked “Nanoflower” Enzyme
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%.