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Home > Products > Food Additives > Lactic Acid > LACTIC ACID α-hydroxypropionic acid CH3CH(OH)COOH
LACTIC ACID α-hydroxypropionic acid CH3CH(OH)COOH
LACTIC ACID α-hydroxypropionic acid CH3CH(OH)COOH
LACTIC ACID α-hydroxypropionic acid CH3CH(OH)COOH
  • LACTIC ACID α-hydroxypropionic acid CH3CH(OH)COOH
  • LACTIC ACID α-hydroxypropionic acid CH3CH(OH)COOH
  • LACTIC ACID α-hydroxypropionic acid CH3CH(OH)COOH

LACTIC ACID α-hydroxypropionic acid CH3CH(OH)COOH

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Additional Info

Place of Origin: Shandong

Port: ,,

Product Description

Lactic Acid is produced industrially by bacterial fermentation of carbohydrates, or by chemical synthesis from acetaldehyde that comes from coal or crude oil. In 2009, LACTIC ACID was produced predominantly (70–90%) by fermentation. Production of racemic lactic acid consisting of a 1:1 mixture of d and l stereoisomers, or of mixtures with up to 99.9% l-lactic acid, is possible by microbial fermentation. Industrial scale production of d-lactic acid by fermentation is possible, but much more challenging.


Fermentative production

Fermented milk products are obtained industrially by fermentation of milk or whey by Lactobacillius species bacteria: Lactobacillus acidophilus, Lactobacillus casei, Lactobacillus delbrueckii subsp. bulgaricus (Lactobacillus bulgaricus), Lactobacillus helveticus, Lactococcus lactis, and Streptococcus salivarius subsp. thermophilus (Streptococcus thermophilus).

As a starting material for industrial production of lactic acid, almost any carbohydrate source containing C5 and C6 sugars can be used. Pure sucrose, glucose from starch, raw sugar, and beet juice are frequently used. Lactic acid producing bacteria can be divided in two classes: homofermentative bacteria like Lactobacillus casei and Lactococcus lactis, producing two moles of lactate from one mole of glucose, and heterofermentative species producing one mole of lactate from one mole of glucose as well as carbon dioxide and acetic acid/ethanol.

Chemical production

Racemic lactic acid is produced by the addition of hydrogen cyanide to acetaldehyde and subsequent hydrolysis, forming lactonitrile. When hydrolysis performed by hydrochloric acid, ammonium chloride forms as a by-product; the Japanese company Musashino is one of the last big manufactures of lactic acid by this route. Synthesis of both racemic and enantiopure lactic acids is also possible from other starting materials (vinyl acetate, glycerol, etc.) by application of catalytic procedures.


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