Fig. 5

Polyphenol Oxidase (PPO) activities for different treatments at two seasons. T1 = AgNps 50 ppm, T2 = AgNps 75 ppm, T3 = AgNps 100 ppm, T4 = Spirulina 50%, T5 = Spirulina 75%, T6 = Spirulina 100% and T7 = Bacillus subtilis%