Tag: E224

According to chemical classifications, the term “sulfites” refers to a group of substances including potassium metabisulfite, which is classified as an inorganic sulfite salt. This white crystalline powder is commonly used in winemaking and food preservation for its antimicrobial and antioxidant properties. When dissolved in a liquid, it releases sulfur dioxide ($SO_2$) gas, which is the active agent that provides its preservative effects.

Most people don't realize that sulfites are a broad category of substances, not a single chemical. Understanding the distinction between the general term “sulfite” and the specific compound potassium metabisulfite is crucial, especially for those in food production or with sensitivities.

According to the FDA, potassium metabisulfite is generally recognized as safe (GRAS) for most people, but specific sensitivities can lead to adverse reactions. This article explores the question, "Is potassium metabisulfite harmful to humans?" and details how it affects different individuals.

The U.S. Food and Drug Administration (FDA) has designated potassium metabisulfite as Generally Recognized As Safe (GRAS) for use in foods, including fruit juices. This status is contingent upon adherence to specific manufacturing practices and limitations, but raises the question, is potassium metabisulfite safe in lemon juice?