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L-Malic acid is nearly odorless (sometimes a faint, acrid odor) with a tart, acidic taste.
L-Malic acid is nonpungent.
May be prepared by hydration of L-Malic acid; by fermentation from sugars.
CAS: 97-67-6
MF: C4H6O5
MW: 134.09
EINECS: 202-601-5
Synonyms
L-(-)-Malic acid, CP;Butanedioic acid, 2-hydroxy-, (2S)-;pinguosuan;Butanedioicacid,hydroxy-,(S)-;hydroxy-,(S)-Butanedioicacid;l-(ii)-malicacid;L-Gydroxybutanedioicacid;L-Mailcacid
An optically active form of L-Malic acid having (S)-configuration.
L-Malic acid is an organic acid that is commonly found in wine.
L-Malic acid plays an important role in wine microbiological stability.
L-Malic acid is a naturally occurring dicarboxylic acid found in fruits (especially apples) and produced by all living organisms as a key intermediate in the Krebs cycle.
L-Malic acid is a white crystalline powder with a tart, sour taste, often used as a flavoring agent, food acidulant, and in dietary supplements for energy support.
L-Malic acid is an organic compound with the molecular formula HO2CCH(OH)CH2CO2H.
L-Malic acid is a dicarboxylic acid that is made by all living organisms, contributes to the sour taste of fruits, and is used as a food additive.
L-Malic acid has two stereoisomeric forms (L- and D-enantiomers), though only the L-isomer exists naturally.
The salts and esters of L-Malic acid are known as malates.
The malate anion is a metabolic intermediate in the citric acid cycle.
L-Malic acid, with the CAS number 97-67-6, is a naturally occurring organic compound classified as a dicarboxylic acid.
L-Malic acid is a colorless, odorless crystalline solid that is soluble in water and has a slightly tart flavor, commonly found in various fruits, particularly apples.
L-Malic acid plays a crucial role in the Krebs cycle, a key metabolic pathway for energy production in living organisms.
L-Malic acid's molecular formula is C4H6O5, and it features two carboxyl functional groups (-COOH), which contribute to its acidity and reactivity.
L-Malic acid is used in the food industry as a flavoring agent and acidulant, enhancing the taste of beverages and candies.
Additionally, L-Malic acid has applications in the cosmetic and pharmaceutical industries due to its ability to act as a pH regulator and a chelating agent.
L-Malic acid is generally recognized as safe (GRAS) when used in food products, and its biodegradable nature makes it an environmentally friendly option in various applications.
L-Malic acid Chemical Properties
Melting point: 101-103 °C (lit.)
alpha: -2 º (c=8.5, H2O)
Boiling point: 167.16°C (rough estimate)
bulk density: 600kg/m3
density: 1.60
vapor pressure: 0Pa at 25℃
refractive index: -6.5 ° (C=10, Acetone)
FEMA: 2655 | L-MALIC ACID
Fp: 220 °C
storage temp.: Store below +30°C.
solubility: H2O: 0.5 M at 20 °C, clear, colorless
form: Powder
color: White
Specific Gravity: 1.595 (20/4℃)
Odor: odorless
PH: 2.2 (10g/l, H2O, 20℃)
pka: (1) 3.46, (2) 5.10(at 25℃)
Odor Type: odorless
biological source: microbial
Optical Rotation: [α]20/D 30±2°, c = 5.5% in pyridine
Water Solubility: soluble
Merck: 14,5707
JECFA Number: 619
BRN: 1723541
Cosmetics Ingredients Functions: BUFFERING
InChI: 1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)/t2-/m0/s1
InChIKey: BJEPYKJPYRNKOW-REOHCLBHSA-N
LogP: -1.68
CAS DataBase Reference: 97-67-6(CAS DataBase Reference)
NIST Chemistry Reference: L-Malic acid(97-67-6)
EPA Substance Registry System: L-Malic acid (97-67-6)
L-Malic acid is nearly odorless (sometimes a faint, acrid odor).
L-Malic acid has a tart, acidic, nonpungent taste.
Uses
L-Malic acid is used as a food additive, Selective α-amino protecting reagent for amino acid derivatives.
Versatile synthon for the preparation of chiral compounds including κ-opioid receptor agonists, 1α,25-dihydroxyvitamin D3 analogue, and phoslactomycin B.
The naturally occuring isomer is the L-form which has been found in apples and many other fruits and plants.
Selective α-amino protecting reagent for amino acid derivatives.
Versatile synthon for the preparation of chiral compounds including κ-opioid rece.
Intermediate in chemical synthesis.
Chelating and buffering agent.
Flavoring agent, flavor enhancer and acidulant in foods.
Biochem/physiol Actions
L-Malic acid is a part of cellular metabolism.
L-Malic acid's application is recognized in pharmaceutics.
L-Malic acid is useful in the treatment of hepatic malfunctioning, effective against hyper-ammonemia.
L-Malic acid is used as a part of amino acid infusion.
L-Malic acid also serves as a nanomedicine in the treatment of brain neurological disorders.
A TCA (Krebs cycle) intermediate and partner in the malic acid aspartate shuttle.
