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Table 6 Measure of keratinolytic activity at initial time and after 28 days for homemade enzymatic extract crude and concentrated and enzymatic extracts after exposure to ultrasonic reaction systems and microwave irradiation containing swine hair and chicken feathers

From: Reactional ultrasonic systems and microwave irradiation for pretreatment of agro-industrial waste to increase enzymatic activity

Crude Enzyme extracts (homemade) Swine hair Chicken feathers
Assays 0° day 28° day 0° day 28° day
  Enzymatic activity (U mL−1)   Enzymatic activity (U mL−1)  
Ultrasonic Probe   172.0 137.0 172.0 133.0
Ultrasonic bath   153.0 124.0 153.0 115.5
Microwave   96.0 106.5 96.0 141.0
Crude extract   171.0 151.5 171.0 121.5
Concentrated Enzyme extracts (homemade) Swine hair Chicken feathers
Assays 0° day 28° day 0° day 28° day
  Enzymatic Activity (U mL−1)   Enzymatic Activity (U mL−1)  
Ultrasonic probe   159.5 231.0 159.5 192.5
Ultrasonic bath   141.8 202.0 141.8 181.5
Microwave   149.0 229.5 149.0 191.5
Crude extract   103.8 103.8
Concentrated extract   159.3 159.3