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Fluorescence and mass spectrometric detection schemes are developed and compared for the simultaneous activity determination of two enzymes in solution. As model system, the following reactions are used: The alkaline phosphatase catalyzed reaction with 5-fluorosalicyl phosphate yields the fluorescent 5-fluorosalicylic acid, whereas microperoxidase 11 reacts with 4-(N-methylhydrazino)-7-nitro-2,1,3-benzooxadiazole...
A detection scheme for the simultaneous evaluation of two bioassays based on fluorescence spectroscopy is presented. For the determination of hydrogen peroxide-generating enzymes or peroxidases, the non-fluorescent 4-(N-methylhydrazino)-7-nitro-2,1,3-benzooxadiazole (MNBDH) is converted to the strongly fluorescent 4-(N-methylamino)-7-nitro-2,1,3-benzooxadiazole (MNBDA). Phosphatases are detected based...
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