Niranbio Chemical

L-Lactic Acid

L-Lactic Acid

CAS: 79-33-4
Chemical Formula: C3H6O3
Certification: KOSHER, ISO, HALAL, FSSC22000, BRC, etc.
Shelf Life: 2 Years

What is L-Lactic acid?

L-Lactic acid is an optically active isomer of lactic acid. It is an organic acid refined through biological fermentation using corn starch as a raw material. The appearance is colorless, transparent, viscous liquid. With excellent biocompatibility due to its chirality, it is compatible with mammals, directly participating in human metabolism without side effects.

Widely applied in food, medicine, and other fields, L-lactic acid can be produced through either chemical synthesis or fermentation. The chemical synthesis method generally uses ethylene as a raw material and performs esterification and hydrolysis reactions in the presence of a catalyst; the fermentation method uses certain bacteria or fungi, such as L-Lactic acid bacteria or gibberellins, to convert starch or sugar into L-Lactic acid.

Related parameters:

Color Colorless or light yellow liquid
Appearance Transparent liquid
Smell No exceptional smell or has

special smell of L-Lactic Acid

Chroma (fresh) Hazen Max. 50
Chroma (after heating 200℃, 2h) Hazen Max. 80
Identification test Pass Test
Lactic acid content % w/w ≥90
L-Lactic acid content (in the total lactic acid) % L (+) Min. 97.5
Ignition residue % w/w Max. 0.1
Chloride ppm Max. 20
Sulphate ppm Max. 50
Iron ppm Max.10
Reducing Sugar Pass Test
Citric acid, Oxalic acid, Tartaric acid, Phosphoric acid PassTest
Carbonic commpound Pass Test
Cyanide mg/kg Max. 1
Pb mg/kg Max. 2.0
As mg/kg Max. 1.0

Recommended dosage

Food name Maximum usage(g/kg)
Fruit juices 0.3 g/kg
Soft drinks 0.3 g/kg
Cakes and pastries 0.3 g/kg
Biscuits and cookies 0.3 g/kg
Yogurt 0.4 g/kg
Cheese 0.3 g/kg
Sausages 0.3 g/kg
Salad dressings  0.3 g/kg
Vegetables 0.3 g/kg
Fruits  0.3 g/kg

L-Lactic acid has a wide range of uses

1.Food Industry: Primarily employed in sectors like confectionery, beverages (such as beer, wine, and acidic beverages), potassium sorbate serves as an acidifier and flavor regulator, acknowledged for its absolute safety as a food additive. It finds extensive application in refreshing drinks and vegetable processing, as well as in meat products and baking industries. Its ability to lower food pH effectively inhibits bacterial and mold growth, thereby prolonging shelf life and enhancing food acidity and flavor, contributing to more delicious meat products. It can also be used as a fermentation regulator for yeast, affecting the fermentation speed and texture of dough.
2.Pharmaceutical Industry: L-Lactic acid serves as a significant pharmaceutical intermediate, utilized in the production of medications like erythromycin infusion solutions, L-calcium lactate, L-sodium lactate, L-zinc lactate, and L-ferrous lactate. It also finds application as a sterilizing agent in operating rooms, wards, laboratories, and similar environments.

3.Cosmetics: Potassium sorbate serves various functions in cosmetics, including moisturizing, acting as a humectant, promoting skin renewal, regulating pH, removing acne, and preventing tartar buildup.

4.Pesticide industry: L-Lactic acid exhibits high biological activity, is non-toxic to crops and soil, and is being actively promoted for the production of new environmentally friendly pesticides in developed countries such as Japan and the United States.

User asked question:

Q: What should be paid attention to when transporting or packaging L-Lactic acid?
A: L-Lactic acid for edible use is packed in plastic barrels meant for pharmaceutical reagents, sealed, and stored in accordance with standard chemical regulations.
Q: Can L-Lactic acid really lighten dark spots?
A: L-Lactic acid is a water-soluble organic acid that has multiple functions such as moisturizing, anti-oxidation, and exfoliation. It also inhibits melanin formation, reduces spots and chloasma, and exhibits a whitening effect.


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