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- Title
Quantitative Determination of Glycine in Aqueous Solution Using Glutamate Dehydrogenase-Immobilized Glyoxal Agarose Beads.
- Authors
Keskin, Semra; Keskin, Can
- Abstract
In this study, an enzymatic procedure for the determination of glycine (Gly) was developed by using a column containing immobilized glutamate dehydrogenase (GDH) on glyoxal agarose beads. Ammonia is produced from the enzymatic reactions between Gly and GDH with NAD in phosphate buffer medium. The indophenol blue method was used for ammonia detection based on the spectrophotometric measurements of blue-colored product absorbing at 640 nm. The calibration graph is linear in the range of 0.1-10 mM of Gly concentrations. The effect of pH, temperature, and time interval was studied to find column stability, and also the interference effects of other amino acids was investigated. The interaction between GDH and glyoxal agarose beads was analyzed by Fourier transform infrared (FTIR) spectroscopy. The morphology of the immobilized and non-immobilized agarose beads were characterized by atomic force microscopy (AFM).
- Subjects
GLYCINE; AQUEOUS solutions; GLUTAMATE dehydrogenase; GLYOXAL; ENZYMATIC analysis; AGAROSE
- Publication
Applied Biochemistry & Biotechnology, 2014, Vol 172, Issue 1, p289
- ISSN
0273-2289
- Publication type
Article
- DOI
10.1007/s12010-013-0543-1