properties of matter : Dactylium dendroides Supplied as a purified powder, containing sodium phosphate and cucrose as stablilizer. Oxidizes galactose and some galactose derivatives in both free and polymeric forms. Oxidation at the C6 position. Optimum pH is 7.0.One unit equals a change in absorbance at 425nm of 1.000 per minute at 25°C, pH6.0 using a perosidase/o-tolidine coupled assay with galactose as the substrate.