The serine protease from B. licheniformis (Novozymes) was
used for the production of hydrolysates. Protease activity was
determined according to the method of Kembhavi, Kulkarni, and
Pant (1993) using casein as a substrate. One unit of protease activity
was defined as the amount of enzyme required to liberate
1 mg of tyrosine per minute under the experimental conditions
used