茶氨酸
简介
茶氨酸(l -茶氨酸)是茶叶中一种独特的游离氨基酸，茶氨酸是谷氨酸γ-乙基酰胺。茶氨酸含量因茶的种类和产地而异。茶氨酸占干茶的1% ~ 2%。茶氨酸是一种白色针状物质，可溶于水。具有甘甜爽口的味道，是茶的味道成分。
规格
| Item | Standard | Analysis data |
| Appearance |
White crystalline powder |
Conforms |
| Specific rotation(a)D20(C=1 , H2O) |
+7.5º to +8.5º |
+8.09º |
| Solubility | Freely soluble in water, insoluble inEtOH | Conforms |
| Assay |
98.0-102.0% |
98.46% |
| Melting Point (ºC) |
200ºC to 210 ºC |
202.1ºC |
| Chloride(C1) |
Not more than 0.02% |
<0.02% |
| Iron(Fe) |
Not more than 10ppm |
<10ppm |
| Heavy metals(Pb) |
Not more than 10ppm |
<10ppm |
| Arsenic(As2O3) |
Not more than 4ppm |
<4ppm |
| Loss on drying |
Not more than 1.0% |
0.25% |
| Residue on ignition |
Not more than 0.2% |
0.08% |
| Total Plate Count |
Not more than 1000cfu/g |
Conforms |
| Yeat& mould |
Not more than 100cfu/g |
Conforms |
| Ethyl alcohol |
Not more than 3000ppm |
Conforms |
| E.Coli | Negative | Negative |
| Salmonella | Negative | Negative |
| PH | 5.0-6.0 | 5.64 |
| Mesh Size |
90% through 60mesh |
90% through 60mesh |
用途
1.茶氨酸能降低血压、血糖、血脂
2.具有清除自由基、抗衰老作用的茶氨酸粉;
3.茶氨酸能增强免疫功能，预防感冒;
4.茶氨酸具有抗辐射、抗癌、抑制癌细胞增长的作用。
