E227 Calcium Hydrogen Sulfite


Calcium bisulfite is the other name for this salt of a calcium cation and a bisulfite anion. Chemical formula is: Ca(HSO3)2.

This sulfite was patented to use in wood pulp industry in the US in 1867.

Not permitted as a preservative in Australia and New Zealand, but still used in other parts of the world.

Prevents secondary fermentation in brewing and is used in washing beer casks to prevent the beer becoming cloudy or sour.

Also used as a firming agent in canned fruits and vegetables.

Food uses of calcium hydrogen sulfite:

  • Beer
  • Canned fruits
  • Canned vegetables
  • Jams, jellies

Non food uses of calcium hydrogen sulfite:

  • Wood pulp industry
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