| ITEM |
STANDARD |
| Material sources |
Horse spleen |
| Appearance |
Red brown solution |
| Identification |
| 1)Add to 25% ammonium sulfate |
To form dark red precipitate |
| 2)Add to alcohol |
To form dark red precipitate |
| 3)Add to 10% cadmium sulfate |
To form red cadmium ferritin precipitate |
| 4) SDS-PAGE(sodium dodecylsulphate polyacrylamide gel electrophoresis) |
The tension of protein has absorption properties to horse ferritin |
| Purity testing |
| 1)Inorganic iron |
In the sample solution, the color ratio of ether stratum is 0.1µg/mL,the color of ether stratum in the ferric ion is light. |
| 2) Ferritinic Iron content(as is basis) |
> 20mg Fe3+/g |
| pH |
6.8~7.2 |
| Density |
1.13~1.15g/ml |
| Solubility |
Transparent |
| Methyl p-hydroxybenzoate |
<2.0mg/g |
| Ehtyl p-hydroxybenzoate |
<0.01mg/g |
| Propyl p-hydroxybenzoate |
< 0.01mg/g |
| Total aerobic microorganism count |
<100cfu/g |
| Total yeast and bacterial count |
< 15cfu/g |
| E.Coli |
Absent |
| Pseudomonas |
Absent |
| Staphylococcus aureus |
Absent |
| Salmonella species |
Absent |
