1 Subject content and application scope
This standard specifies the methods of determination for industrial enzymes.
This standard is applicable to the test of industrial enzymes.
2 Normative references
GB 601 Chemical reagent - Preparations of standard volumetric solutions
GB 603 Chemical reagent - Preparations of reagent solutions for use in test methods
GB 604 Chemical reagent - General method for the determination of pH ranges corresponding the colour transition of acid-base indicators
GB 1250 Rules for expression and judgment of limiting values
GB 4789.2 Microbiological examination of food hygiene - Detection of aerobic bacterial count
GB 4789.3 Microbiological examination of food hygiene - Detection of coliform bacteria
GB 4789.4 Microbiological examination of food hygiene - Examination of salmonella
GB 4789.15 Microbiological examination of food hygiene - Enumeration of molds and yeasts
GB 6004 Test sieves - Woven metal wire cloth (square opening series)
GB 6682 Water for laboratory use - Specification
GB 8170 Rules for rounding off of numerical values
GB 8451 Method for limit test of heavy metals in food additives
GB 9721 Chemical reagent - General rules for the molecular absorption spectrophotometry (ultraviolet and visible)
3 General and basic requirements
3.1 General requirements
1 Subject content and application scope
2 Normative references
3 General and basic requirements
4 Appearance and odor inspection
5 Test method for enzyme activity
6 Test method for drying loss
7 Test method for fineness (granularity)
8 Test method for bulk density
9 Test method for pH value
10 Test methods for disintegration (dissolution) time of detergent enzymes
11 Calculation method for enzyme activity preservation rate
12 Hygiene-required testing
Annex A Test method for enzyme activity (supplementary)
Additional explanation:
