≥1 piece |
Items
|
Index (Food Grade)
|
Index (Common Grade)
|
Appearance
|
White or jasmine powder, soluble in water, sweet taste.
|
White or jasmine powder, soluble in water, sweet taste.
|
Differentiation
|
positive ninhydrin reaction
|
positive ninhydrin reaction
|
Total nitrogen
|
≥15%
|
≥14.5%
|
Weight Loss on drying
|
≤2.5%
|
≤4%
|
Residue on ignition
|
≤3.0%
|
≤5%
|
pH value
|
5.0-7.0
|
5.0-7.0
|
Total Glycin, L-alanine, l-serine
|
≥85%
|
≥82%
|
Heavy Metal ( as Pb)
|
≤5ppm
|
≤10ppm
|
As
|
≤0.5ppm
|
≤1ppm
|
Bacteria
|
≤100
|
≤100
|
Coli group (MPN)(pieces/100g)
|
≤30
|
≤30
|
Pathogenic Bacteria
|
No detection
|
No detection
|