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CAS Number 24634-61-5
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Empirical Formula (Hill Notation) C6H7KO2
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Molecular Weight 150.22
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E Number E202
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EC Number 246-376-1
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MDL number MFCD00016546
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PubChem Substance ID 248715
Potassium sorbate is the potassium salt of sorbic acid, chemical formula CH3CH=CH−CH=CH−CO2K.
It is a white salt that is very soluble in water (58.2% at 20 °C). It is
primarily used as a food preservative (E number 202).
Detailed description
Potassium
sorbate is effective in a variety of applications including food, wine, and personal-care products. While sorbic acid is naturally occurring in
some berries, virtually all of the world's production of sorbic acid, from
which potassium sorbate is derived, is manufactured synthetically.
Uses[edit]
Potassium sorbate is used to inhibit molds and yeasts in many foods, such
as cheese, wine, yogurt, dried
meats, apple
cider, soft drinks and fruit drinks, and baked goods. Its
breakdown to sorbitol, a sugar alcohol, has been shown to increase the chances
of a bowel movement from eating prunes.[8] It is used in the
preparation of items such as maple syrup and milkshakes served by fast-food restaurants such as McDonald's.[9][10] It can also be found
in the ingredients list of many dried
fruit products. In addition, herbal dietary supplement products
generally contain potassium sorbate, which acts to prevent mold and microbes
and to increase shelf life. It is used in quantities at which no adverse health
effects are known, over short periods of time.[11] Labeling of this
preservative on ingredient statements reads as "potassium sorbate" or
"E202". Also, it is used in many personal-care
products to inhibit the development of microorganisms for shelf stability.
Some manufacturers are using this preservative as a replacement for parabens. Tube feeding of potassium sorbate reduces gastric burden of
pathogenic bacteria.[12]
Also known as "wine stabilizer", potassium
sorbate produces sorbic
acid when added to wine. It serves two purposes. When active fermentation has ceased and the
wine is racked for the final time after clearing, potassium sorbate renders any
surviving yeast incapable of multiplying. Yeast living at that moment can
continue fermenting any residual sugar into CO2 and alcohol, but when they die, no new yeast will be present to cause
future fermentation. When a wine is sweetened before bottling, potassium
sorbate is used to prevent refermentation when used in conjunction with potassium metabisulfite. It is primarily used with sweet
wines, sparkling
wines, and some hard
ciders, but may be added to table
wines, which exhibit difficulty in maintaining clarity
after fining.
Some molds (notably some Trichoderma and Penicillium strains) and yeasts are able to detoxify
sorbates by decarboxylation, producing piperylene (1,3-pentadiene).
The pentadiene manifests as a typical odor of kerosene or petroleum.
PRICE
$39379.67/KG OR $17899.85/IB
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