Potassium malate

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Potassium malate
Potassium malate.svg
IUPAC name
dipotassium 2-hydroxybutanedioate
Other names
Dipotassium malate; E351
585-09-1 YesY
ChemSpider 144374
Jmol interactive 3D Image
PubChem 164689
Molar mass 210.27 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
YesY verify (what is YesYN ?)
Infobox references

Potassium malate is a compound with formula K2(C2H4O(COO)2). It is the potassium salt of malic acid.

As a food additive, it has the E number E351. It is used as acidity regulator or acidifier for use in, for example, canned vegetables, soups, sauces, fruit products and soft drinks. It also acts as an antioxidant and as a food flavor. It is an important compound in the transport of nitrate from the roots of a plant to the leaves of the plant. Potassium malate is the salt that transports from the leaves to the root. At the root the potassium maleate oxidizes to potassium carbonate, then is converted to potassium nitrate by soil nitrate and transported back to the leaves.