used reaction mixture containing Fast blue RR salt, alpha-napthyl acetate in Phosphate buffer and SDS used for stopping the reaction
Please look at the following below links which may help you in your analysis:
http://www.scielo.br/pdf/cta/v31n3/a09v31n3.pdf
https://bioresources.cnr.ncsu.edu/wp-content/uploads/2016/10/BioRes_11_4_10099_Peng_FLL_Accurate_Determ_Esterase_Activity_Isobestic_Pt_pNitrophenol_10444.pdf
https://www.ijcmas.com/vol-2-7/Kulkarni%20Sayali,%20et%20al.pdf
Thanks
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