Potassium sulphite (E225), a preservative prohibited in our country. Want to know more about it?

11. 01. 2023

Potassium sulfite is a white volatile powder that is used as a synthetic preservative. It is the potassium salt of sulfuric acid and forms potassium sulfate after reaction with oxygen. In an acidic environment, it forms sulfuric acid, a preservative. In addition to being a preservative, it can also be used as a bleaching agent in the production of sugar.

Foods with this food additive can be safely consumed by people with gluten allergies and vegans.

Main important points about E225 – Potassium sulphite:
Not suitable for children.
May cause an allergic reaction.
It is not allowed in the Czech Republic.
We do not recommend.

Production of E225

It is made by adding potassium hydroxide to sulfuric acid.

What is potassium sulfite used for?

It is used as a preservative as well as an oxidizing and bleaching agent to prevent spoilage and discoloration. Prevents browning in meat; however, it is not allowed in meat products because it can mask bacterial spoilage characterized by discoloration. It is also used as a bread improver.

Examples of foods and drinks that sometimes contain E225:

  • beer
  • marmalades and jams
  • fruit drinks
  • wine
  • Dried Fruit

Is E225 healthy?

Due to its oxidizing effect, potassium sulfite can reduce the vitamin content of products. It is reduced to harmless sulfate in the liver and excreted in the urine.

Sulphites (E221 – E228) should be avoided if the individual has a bad tolerance to natural sulphites. This chemical is known to irritate the stomach lining due to the release of sulfuric acid.

Use of EU vs. USA vs. world

Potassium sulphite is not approved by the EU as a food additive.

X