Abstract
Rapid and simple spectrophotometric methods are required to detect various oligosaccharides produced by agar-hydrolysing enzymes. Herein, we present a quantitative agarose–iodine assay for agarase activity determination via the detection of the extent of agarose degradation. The agarose–iodine complex becomes reddish orange upon the addition of Lugol solution, and the enzymatic activity can be detected with ultraviolet–visible spectroscopy at 600 nm. The main advantages of this modified Lugol assay are high sensitivity, simple detection, and cost effectiveness. A novel definition of the unit to measure and compare the activities of agarases is also suggested.
Published Version
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