Specification :
|
Items |
Specification |
Results |
|
Appearance |
white to light yellow crystal or crystal powder |
Complies |
|
Specific Optical Rotation |
-29.0°~-33.0° |
-29.8° |
|
Loss on drying |
≤0.5% |
0.29% |
|
Crude Ash |
≤0.5% |
0.21% |
|
Heavy metals(Pb) |
≤20 mg/kg |
0.05mg/kg |
|
Arsenic |
≤2mg/kg |
N.D |
|
Assay |
≥98% |
99.20% |
1. L Tryptophan is an important nutrient.
2. L Tryptophan takes part in the renewal of animal blood plasma protein in the body
3. L Tryptophan helps nicotinic acid and the synthesis of hemoglobin. It can significantly increase antibody in pregnant animals baby.
4. L Tryptophan can promote lactation of cows and sows.
5. L Tryptophan is used as control agent of pellagra.
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