Phosphatidylserine (PS) is white or light yellow loose powder, dispersed in water. Insoluble in ethanol and methanol; soluble in chloroform, ether and petroleum ether.Phosphatidylserine (PS) is composed of three parts: the hydrophilic glycerin skeleton is the head, and the two long hydrocarbon chain lipophilic groups are the tail. The head is composed of three groups: the serine residue is combined with the phosphate residue and then connected to the hydroxyl group of C-3 glycerol; the other two hydroxyl groups of glycerol are esterified with fatty acids to form the tail. Compared with the C-1 fatty acid, the fatty acid at the C-2 position of glycerol generally has a longer carbon chain and more unsaturated bonds. Phosphatidylserine (PS) refers to a group of compounds, rather than a single component. This is due to the fact that the product lipid acetyl residues extracted from raw materials from different sources vary greatly.
food/milk supplements for source of Phosphatidylserine (PS);
in 20KG net weight cartons,5KGX4 bags inside;
in 25KG net wight cartons, 5KGX5 bags inside;
Each packing unit must carry a label indicating the name of the product, the net weight, the name of the manufacture, the date of production, the batch code, expiry date or shelf life and storage condition.
Keep in a cool, well-ventilated place, stored away from extreme heat and away from strong oxidizing agents.
Due to the rising cost for international delivery, no free samples, for quality check, the buyer party bear the delivery charges firstly, all the samples charges will refund when the order is secured.
For R&D and small trials, we will charge the minimum cost.
In addition to the quality criteria mentioned above, the material must be conforming to all other requirements of the Chinese Food Regulation that not specifically quoted in this specification.