E222 is a food additive
approved by the European Union (EU) and used as an antimicrobial, antioxidant
food preservative and bleaching agent in food products.
The common name for E222 is sodium hydrogen
It is also known as sodium bisulphite.
E222 prevents oxidation and helps to preserve flavour,
especially in wines.
E222 also helps slow the ‘browing’ of
canned fruits. As with other sulphurous acid salts, the chemical’s
oxidising effect has the disadvantage of reducing the vitamin content
of the food
Added sulphites (E221 – E228) should
be avoided if an individual is intolerant to natural sulphites. Due to
the release of sulphur dioxide,
such chemicals can exacerbate the symptoms of asthma - possibly
bringing about an attack, as well as possibly cause gastric irritation
in some people.
Uses for E222 have also been found in DNA sequencing, for example, on
genes from the liver.
Examples of food/drink products that may include E222:
Wine, canned fruits, frozen shell fish, jams, pickles, vegetables, cider,
fruit squashes and juices.