• L-Hydroxyproline




L-Hydroxyproline is a nonessential amino acid, which means that it is manufactured from other amino acids in the liver; it does not have to be obtained directly through the diet.

L-Hydroxyproline is necessary for the construction of the bodys major structural protein, collagen.

L-Hydroxyproline can improve the flavor and quality of fruit juice drinks, soft drinks, etc.

L-Hydroxyproline gives strength to the protein collagen in the bones, tendons, cartilage and skin.

Is produced by hydroxylation (adding hydroxil or [OH] groups) of proline, with the help of vitamin C. In vitamin C deficiency, proline cannot be converted to hydroxyproline, so collagen does not have enough strength to maintain skin integrity.

Product Name  L-Hydroxyproline
 Specification  99%
 Appearance  White Crystal Powder
 CAS No.  51-35-4
EINECS No 200-091-9
 Molecular Formula  C5H9NO3
 Molecular Weight  131.10
 Grade  Food Grade
 Shelf Life  2 Years
Item Specification Results
 Appearance White crystalline powder Conforms
 pH 5.0~6.0  5.7
 Specific rotation -74.0°~-77.0° -75.9°
 State of solution ≥95.0% 98.50%
 Ammonium(NH4) ≤0.02% <0.02%
 Iron(Fe) ≤10ppm <10ppm
 Arsenic(As2O3) ≤1ppm <1ppm
 Heavy metals, as Pb ≤10ppm <10ppm
 Loss on drying ≤0.25% 0.08%
 Residue on ignition ≤0.10% 0.06%
 Assay 98.5%~100.5% Conforms