Home > Products > Animal Extract > Animal Extractt Drying Powder > Transfer Factor Drying Powder

Transfer Factor Drying Powder

Transfer factor drying powder is a light yellow dry powder with a molecular weight of less than 6KD, which is made from healthy fetal cow spleen or pig (chicken) spleen by cell crushing, ultrafiltration, and drying. This product is an immunomodulatory agent, has the function of regulating and enhancing the body’s cellular immunity.

Product Details

Product Parameters:

(1) Take 1ml of this product, add several drops of ninhydrin test solution, and heat, the solution should be blue and purple.
(2) Take this product, add water to make A solution containing polypeptide 20μg per 1mL, spectrophotometric method (Chinese Pharmacopoeia 2000 edition two appendix IV A), the maximum absorption at (251±2) nm (pig spleen) or (261±2) nm (bovine spleen) wavelength.
(3) The absorbance ratio at 251nm (pig spleen) or 260nm (bovine spleen) to 280nm wavelength should not be less than 1.9.
Nucleotides Contain nucleotides in terms of D-ribose, not less than 3mg/g.
Polypeptide takes the right amount of dry powder of this product, add water to make a solution containing 0.15mg polypeptide per 1mL, as the test solution, the precise amount of 1.0mL, according to the determination of fully phenol method, from the regression equation to find the polypeptide content, and not less than 100mg/g.
Shelf life: 36 months


1. The color of this product is slightly different due to different carriers or batches, which does not affect product quality.
2. Please use it as soon as possible after opening the package.
3. In the process of transportation, measures such as moisture-proof and sun-proof should be adopted.
The transportation means should be clean and hygienic, and it is forbidden to mix and transport with toxic and harmful substances.
Storage conditions and methods: The product should be stored in a dry and ventilated warehouse, and must not be mixed with toxic substances.