Other Free Encyclopedias » Science Encyclopedia » Science & Philosophy: Kabbalah Mysticism - Types Of Kabbalah to Larynx

Lactic Acid - Lactic Acid In Foods, Lactic Acid In Human Metabolism, Uses Of Lactic Acid

name light rotates isomer

Lactic acid is a colorless, water-soluble liquid that freezes, or solidifies, at 64.4°F (18°C)—just slightly below normal room temperature. It is scientifically known as alpha-hydroxypropanoic acid and has the chemical formula C3H6O3; the structural formula is shown below:

The "hydroxy" portion of the name tells chemists that there is an alcohol (OH) group in the molecule, and the "alpha" part of the name means that the alcohol is attached to the carbon atom adjacent to the acid (COOH) group. The "prop" portion of the name indicates that there are three carbon atoms. Lactic acid can also be called 2-hydroxypropanoic acid. Each of the two isomers rotates polarized light in a different direction: the L-isomer rotates light to the left, and the D-isomer rotates light to the right. Like most acids, lactic acid has a sour taste. It is found in sour milk, molasses, and many fruits. The lactic acid found in milk is usually a mixture of both isomers. It is used commercially in the textile and dairy industries. Lactic acid is the byproduct of anaerobic respiration, and is largely responsible for the aches in sore muscles after a vigorous workout.

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or

Vote down Vote up

almost 2 years ago

HI,We specializes in production of ion exchange resins and adsorbents for removal of selective contaminants from potable water´╝îextraction,purification in juices,remove impurities and improve productivity.I appreciate that you can feel free to contact me if you want to know more information.