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definition of unit:
1 unit of Acid Protease equals to the amount of
enzyme, which hydrolyzes casein to get 1 μg of
tyrosine in 1 min. at 40≧
and pH3.0.
1 unit of Neutral Protease equals to the amount of
enzyme, which hydrolyzes casein to get 1 μg of
tyrosine in 1 min. at 30≧
and pH7.5.
1 unit of Alkaline Protease equals to the amount of
enzyme, which hydrolyzes casein to get 1 μg of
tyrosine in 1 min. at 40≧
and pH10.5.
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