Acid protease abstracts from fermentation of Aspergillus niger. Under low PH value, it can effectively hydrolyze protein. Acid protease be widely used in ethanol, baijiu, beer, brewage, food processing, feedstuffand etc.
1.Temperature range: 30-50℃; Optimum temperature range: 40-50℃
2.PH range: 2.5-6.0; Optimum PH range:2.5-3.5
1. Specification: 50,000u/ml,amber liquid
2. Definition of enzyme activity: under the condition of 40℃,PH 3.0, 1g or 1ml acidprotease hydrolyzes casein into 1ugtyrosine in one minute as an unit (u/g or u/ml).
3.Quality standard: in accordance with QB1805.3-93
1.Alcohol production(grain fermentation): 10-15u/ml( raw material), specific dosage depends on raw material and technology.
2.Feedstuff , food processing: 5-10u/ml, specific dosage depends on fact.
When use acid protease in fermentation, due to high speed of fermentation and rise of temperature, it should be strictly controlled temperature below 40℃ orit will lost effect.
It should wash with water for at least 15 minutes in case of contact with skin and eyes.
Time:2011-5-27 11:19:54 Hits:2145