Produktname:L-Threonin |
CAS-Nr :72-9-5; 6028-28-0 |
EINECS-NR:200-774-1 |
Molekularformel: C4H9NO3 |
Molekulargewicht: 119.12 |
Aussehen:white orthorhombic system or crystalline powder. Geruchlos, taste sweet. |
Löslichkeit:In Wasser löslich, 25 ℃ solubility is 20.5 g / 100 ml. |
VERWENDET:THR is a kind of important nutrition fortifier, can be fortified cereals, Gebäck, Milchprodukte, and tryptophan has to restore the body fatigue, promote the effect of the growth and development. Medicine, because of the structure containing hydroxyl threonine, effect on human skin with moisture, combined with oligosaccharide chain, play an important role in protecting cell membrane, can promote the synthesis of phosphate ester and fatty acid oxidation in the body. |
Standard: USP24 |
GRUNDLEGENDE ANALYSE | ||
Gegenstand der Analyse | Spezifikation | Ergebnisse |
Probe | 98.5%~101,5 % | 99.4% |
Organoleptisch | ||
Aussehen | Weiße Kristalle oder kristallines Pulver | weißes kristallines Pulver |
Geruch | Charakteristisch | Entspricht |
Geschmack | Charakteristisch | Entspricht |
Physikalische Eigenschaften | ||
pH-Wert | 5.0~6.5 | 5.58 |
Specific rotation | -26.7°~-29.1° | -27.2° |
Trocknungsverlust | ≤0,20 % | 0.15% |
Glührückstand | ≤0.40% | 0.04% |
Schwermetalle | ||
Schwermetalle(Pb) | ≤15ppm | <15ppm |
Chlorid (Kl) | ≤0,05 % | <0.05% |
Arsen (As2O3) | ≤1 ppm | <1ppm |
Ammonium (NH4) | ≤0,02 % | <0.02% |
Eisen(Fe) | ≤0.003% | <0.003% |
Sulfat (SO4) | ≤0.03% | <0.03% |
Mikrobiologische Tests | ||
Total aerobic plate count | ≤1000 KBE/g | Konform |
Hefe & Schimmel | ≤100 KBE/g | Konform |
E. Coli. | Negativ | Konform |
Salmonellen | Negativ | Konform |
Staphylokokken | Negativ | Konform |