Item | Standard | Result |
Assay/% | ≥98.50 | 99.30 |
Specific Rotation | -26.7° ~ -29.0 ° | -28.40° |
Loss on Drying/% | ≤1.00 | 0.50 |
Residue on Ignition/% | ≤0.30 | 0.20 |
Heavy Metal(Pb)/%(mg/kg) | ≤20 | <20 |
Arsenic(As)/%(mg/kg) | ≤2 | <2 |
L-threonine is an essential amino acid, which is mainly used in medicine, chemical reagent, food fortifying agent, feed additive and so on. In particular, the amount of feed additive increases rapidly. It is often added to the feed of juvenile piglets and poultry. It is the second limiting amino acid of pig feed and the third limiting amino acid of poultry feed. Adding L-threonine into compound feed has the following characteristics : It can adjust the amino acid balance of feed and promote the growth of livestock; Can improve meat quality; It can improve the nutritional value of the feed with low amino acid digestibility; can reduce feed raw material cost; Therefore, it has been widely used in the feed industry in European Union countries (mainly Germany, Belgium, Denmark, etc.) and American countries.
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