Fig. 5From: A study of fungicidal and anti-phenol oxidase activity of some α-amino phosphonate derivativesPhenol oxidase inhibitory activity of M1 and M4. The black color indicates the interaction between the enzyme and the substrate in NC (the negative control without compound). M4 inhibited the enzyme activity in a concentration-dependent manner, M1 also showed moderate inhibitory activity, (KA = kojic acid at 1000 µg/mL)Back to article page