Product Quality Standard | GB/T 25735 |
Sensory | White to yellowish crystal or crystal powder, odorless or slight odor. |
Specific Rotation° | -29.0~-32.8 |
L-Tryptophan, %db | ≥98.0 |
Loss on drying, % | ≤0.5 |
Crude Ash, % | ≤0.5 |
PH (1%w/w) | 5.0-7.0 |
As, mg/kg | ≤2 |
Pb, mg/kg | ≤5 |
Cd, mg/kg | ≤2 |
Hg, mg/kg | ≤0.1 |
Salmonella | Absent |
Application | Feed |
Grade Standard | Feed Grade, Food Grade |
Appearance | Fine powder |
Storage | Cool and dry place |