L-Proline

Introduction of L-Proline:
1. L-Proline(addreviated as Pro or P) is in the shape of white crystal or crystalline powder, with a strong sweet taste.
2. As one of the important amino acids in synthesizing protein and important material for amino acid infusion, L-Proline is widely used in food and pharmaceutical industry.
3. It is an essential food supplement in our food supply.

Main Functions of L-Proline:
1. It can be used as nutritional supplement and flavoring additive.
2. L-Proline and its derivatives are often used as asymmetric catalysts in organic reactions.

Specifications of L-Proline:

Name	L-Proline
CAS No.	147-85-3
Chemical formula	C5H9NO2
Specification	AJI 97
Packing	In 25kg fiber drums
Functional use	Flavor enhancer
Items	Specifications
Appearance	White crystals or crystalline powder
Specific rotation [a]D20	-84.5° --- -86.0°
State of solution(Transmittance)	Clear and colorless, 98% min
Assay	98.5 - 101.0%
Chloride(Cl-)	0.020% max
Sulfate(SO42-)	0.020% max
Ammonium	0.020% max
Loss on drying	0.30% max
Heavy metals(Pb)	0.0010% max
Arsenic	0.0001% max
Iron(Fe)	0.0010% max
Residue on ignition	0.10% max
Other amino acids	Chromatographically not detectable
PH	5.9 - 6.9