In all cases, for each assay 50 μL of extract was diluted with 250 μL
of the respective reaction buffer and incubated in a multi plate
incubator at 37 °C for 15 min. The fluorescence was determined using
excitation and emission wavelengths of 355 and 460 nm, respectively,
in a multiscan fluorometer (Fluoroskan Ascent FL, Thermo Electron
Corporation, Labsystems, Helsinki, Finland). Four replicates were
performed for each enzyme assay, except when determining DPP
activity, where three repetitions were done for each assay. One unit of
enzyme activity (U) was defined as the amount of enzyme which
hydrolyses 1 μmol of substrate per min at 37 °C. The results showed
the enzymatic activity inside the ham throughout processing
measured by the incubation of the enzyme under standard conditions.
In all cases, for each assay 50 μL of extract was diluted with 250 μL
of the respective reaction buffer and incubated in a multi plate
incubator at 37 °C for 15 min. The fluorescence was determined using
excitation and emission wavelengths of 355 and 460 nm, respectively,
in a multiscan fluorometer (Fluoroskan Ascent FL, Thermo Electron
Corporation, Labsystems, Helsinki, Finland). Four replicates were
performed for each enzyme assay, except when determining DPP
activity, where three repetitions were done for each assay. One unit of
enzyme activity (U) was defined as the amount of enzyme which
hydrolyses 1 μmol of substrate per min at 37 °C. The results showed
the enzymatic activity inside the ham throughout processing
measured by the incubation of the enzyme under standard conditions.
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