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L-글루타민산

L-글루타민산
L-글루타민산 구조식 이미지
카스 번호:
56-86-0
한글명:
L-글루타민산
동의어(한글):
(S)-2-아미노글루타르산;(S)-글루탐산;2-아미노글루타르산;L-글루타믹산;L-글루탐산;글루타미놀;글루타믹산;글루타톤;글루탐산,L-;(2S)-2-아미노글루타르산;(S)-(+)-글루탐산(;1-아미노프로판-1,3-디카르복시산;L-(+)-글루탐산;L-글루타민산;L-알파-아미노글루타르산;글루탐산;글루트산;알파-글루탐산;알파-아미노글루타르산;1-아미노프로판-1,3-다이카르복실산
상품명:
L-Glutamic acid
동의어(영문):
GLU;L-GLU;Aciglut;Glusate;GLUTACID;H-GLU-OH;glutamic;Glutaton;L-Glu-OH;FEMA 3285
CBNumber:
CB4355560
분자식:
C5H9NO4
포뮬러 무게:
147.13
MOL 파일:
56-86-0.mol

L-글루타민산 속성

녹는점
205 °C (dec.)(lit.)
알파
32 º (c=10,2N HCl)
끓는 점
267.21°C (rough estimate)
밀도
1.538
굴절률
1.4300 (estimate)
FEMA
3285 | L-GLUTAMIC ACID
저장 조건
Store at RT.
용해도
1 M HCl: 100 mg/mL
물리적 상태
powder
산도 계수 (pKa)
2.13(at 25℃)
색상
White
수소이온지수(pH)
3.0-3.5 (8.6g/l, H2O, 25℃)
optical activity
[α]20/D +32°, c = 10 in 2 M HCl
수용성
7.5 g/L (20 ºC)
최대 파장(λmax)
λ: 260 nm Amax: 0.1
λ: 280 nm Amax: 0.1
Merck
14,4469
JECFA Number
1420
BRN
1723801
InChIKey
WHUUTDBJXJRKMK-VKHMYHEASA-N
CAS 데이터베이스
56-86-0(CAS DataBase Reference)
NIST
L-Glutamic acid(56-86-0)
EPA
L-Glutamic acid(56-86-0)

안전

위험품 표기 Xi
위험 카페고리 넘버 36/37/38
안전지침서 24/25-36-26
WGK 독일 2
RTECS 번호 LZ9700000
F 고인화성물질 10
TSCA Yes
HS 번호 29224200
독성 LD50 orally in Rabbit: > 30000 mg/kg

L-글루타민산 MSDS


2-Aminoglutaric acid

L-글루타민산 C화학적 특성, 용도, 생산

개요

L-Glutamic acid, or L-2-aminopentanedioic acid, is a naturally occurring amino acid of plant and animal proteins. It has a very faint odor reminiscent of yeast or freshly baked bread. It has a mild, somewhat sweet, meat-like taste.
The average glutamic acid content of food proteins is 20 percent. Expressed as glutamic acid per 100 g of the edible portions, medium fat beef contains about 2.65 g of glutamic acid; whole liquid cow milk, 0.82 g; lean pork, 2.16 g; haddock, 2.32 g; peas, 5.58 g; soybeans, 7.01 g; commeal, 1.62 g; and whole grain wheat flour, 4.16 g. In addition, free glutamic acid is present in many vegetables, fish, and meats in small amounts (0. 005 to 0.23 g per 100 g) and as high as 2 g per 100 g in some varieties of cheese. Recent estimates of free amino acids in the milk of various species indicated that the free glutamic acid in human milk is about 0.22 g per 100 mL.
Glutamic acid and its salts are prepared commercially by hydrolysis of gluten (wheat, corn, soybean, sugarbeet protein); by fermentation from glucose-containing raw materials; the racemic acid may be resolved into the d- and ι-isomer by fractional crystallization; from 2 -cyclopentenylamine; by microbial conversion of aketoglutaric acid; or by an alternative method, using Bacillus megatherium-cereus; from fumaric acid using B. pumilus; from starch.
Glutamic acid and the hydrochloride as well as the mono-sodium, -potassium, and -ammonium salts of L-glutamic acid share similar physical properties: they are nearly odorless, white, free-flowing crystalline powders, and except for glutamic acid and glutamic acid hydrochloride, are freely soluble in water. Glutamic acid is slightly soluble and glutamic acid hydrochloride moderately soluble in water. The pH of a saturated solution is about 3.2.

화학적 성질

L-Glutamic acid has a very faint odor reminiscent of yeast or freshly baked bread and a mild, somewhat sweet, meat- like taste This is a naturally occurring amino acid of plant and animal proteins The average glutamic acid content of food proteins is 20%, expressed as glutamic acid per 100 g of the edible portions For a detailed description, see Burdock (1997).

화학적 성질

White cryst. powder

출처

Reported as occurring in many vegetable proteins, in beef fbrin, in the chrysalis of silkworm, in the hydro- lysate of crystalline insulin Also present in other important peptides, such as glutathione, tyrocidin, folic acid, β-lactoglobulin, secretin and bacitracin, and in growth hormone

용도

A non-essential amino acid. Its salt form (glutamate) is an important neurotransmitter that plays a key role in long-term potentiation and is important for learning and memory. It is also a key molecu le in cellular metabolism.

용도

Amino acid/exptl antieplileptic

정의

ChEBI: An optically active form of glutamic acid having L-configuration.

제조 방법

By hydrolysis of gluten (wheat, corn or other vegetable sources); by fermentation from glucose-containing raw materials; the racemic acid may be resolved into the d- and l-isomer by fractional crystallization; from 2-cyclopentenylamine; by microbial conversion of α-ketoglutaric acid; or by an alternative method, using Bacillus megatherium-cereus; from fumaric acid, using B pumilus; from starch.

생물학적 활성

The predominant excitatory transmitter in the mammalian central nervous system. Acts at ionotropic and metabotropic glutamate receptors.

Safety Profile

Human systemic effects by ingestion and intravenous routes: headache and nausea or vomiting. When heated to decomposition it emits toxic fumes of NOx.

Purification Methods

Crystallise L-glutamic acid from H2O acidified to pH 3.2 by adding 4volumes of EtOH, and drying at 110o. Likely impurities are aspartic acid and cysteine. It sublimes at 170-175o/10mm. It melts at 160o with cyclisation to L-pyrrolidone carboxylic acid. [Dunn & Brophy J Biol Chem 99 224 1958, Parikh et al. J Am Chem Soc 80 9571958, Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 pp 1929-1952 1961, Beilstein 4 III 1530, 4 IV 3028.]

L-글루타민산 준비 용품 및 원자재

원자재

준비 용품


L-글루타민산 공급 업체

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