L-Glutamic Acid CAS#56-86-0
L-Glutamic Acid#56-86-0
L-Glutamic acid (CAS#56-86-0) is an important α-amino acid with the chemical formula C₅H₉NO₄, having a molecular weight of 147.13. It is one of the 20 common amino acids that constitute proteins. Currently, it is mainly produced through fermentation, using starch or molasses as the carbon source, and using glutamic acid bacillus or short bacillus as the strain. The fermentation is carried out at 30–34℃ with aeration, followed by precipitation at the isoelectric point or ion exchange for purification.
L-Glutamic acid Chemical Properties
Melting point | 205 °C (dec.) (lit.) |
alpha | 32 º (c=10,2N HCl) |
Boiling point | 267.21°C (rough estimate) |
bulk density | 460kg/m3 |
density | 1.54 g/cm3 at 20 °C |
FEMA | 3285 | L-GLUTAMIC ACID |
refractive index | 1.4300 (estimate) |
storage temp. | 2-8°C |
solubility | 1 M HCl: 100 mg/mL |
form | Flaky crystals / powder |
pka | 2.13(at 25℃) |
color | White |
PH | 3.0-3.5 (8.6g/l, H2O, 25℃) |
Odor | at 100.00 %. mild yeast baked bread |
Odor Type | yeasty |
biological source | non-animal source |
Optical Rotation | [α]20/D +32°, c = 10 in 2 M HCl |
Water Solubility | 7.5 g/L (20 ºC) |
λmax | λ: 260 nm Amax: 0.1 |
Merck | 14,4469 |
JECFA Number | 1420 |
BRN | 1723801 |
InChIKey | WHUUTDBJXJRKMK-VKHMYHEASA-N |
LogP | -3.69 |
CAS DataBase Reference | 56-86-0(CAS DataBase Reference) |
NIST Chemistry Reference | L-Glutamic acid(56-86-0) |
EPA Substance Registry System | L-Glutamic acid (56-86-0) |
Product Application of L-Glutamic Acid#56-86-0
Food Industry
As a flavor enhancer raw material, it is used to produce monosodium glutamate (glutamic acid sodium), and is widely applied in foods such as meat, soups, and seasonings to enhance the flavor.
Medical Field
It is utilized in formulating drugs for treating conditions like hepatic encephalopathy and neurasthenia. Additionally, it serves as a component of compound amino acid infusions to supplement essential amino acids for the human body.
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