Peroxidase (PoD) activity was measured by a spectrophoto- reaction mixture was prepared freshly in a total volume of 100 mL 0.2 M sodium phosphate buffer (pH 6.5) containing 560 HL guaiacol (100x) and 195 H202 (30x) The reaction was canried out in a quartz cuvette. Crude enzyme extract (0.15 mL) was pipetted into the cuvette containing 3.6 mL of substrate solution. The increase in absorbance was measured at 470 nm. The results are presented in Unit/g fresh weight.