Study of fluorescence quenching of Barley α-amylase

The fluorescence quenching of Barley α-amylase by acrylamide and succinimide has been studied in water using steady-state and time-resolved fluorescence techniques. The steady-state fluorescence quenching technique has been performed in three different pHs (i.e., 6, 7 and 8) of water. Ground state and excited state binding constants (Kg & Ke) have been calculated. From the calculated binding constants (Kg & Ke) the free energy changes for the ground (ΔGg) and excited (ΔGe) states have been calculated and are presented in tables. UV and FTIR spectra have also been recorded to prove the binding of Barley α-amylase with acrylamide and succinimide.

Fluorescence quenching spectra of Barley α-amylase with acrylamide.Figure optionsDownload as PowerPoint slideHighlights
► Barley α-amylase, is efficiently quenched by acrylamide and succinimide in an aqueous medium in 3 different pHs.
► The formation of complexes was determined by spectroscopic study.
► FTIR study conform the above.
► The binding constants were calculated.