sulphite

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sulphite

any salt or ester of sulphurous acid, containing the ions SO32-- or HSO3-- (hydrogen sulphite) or the groups --SO3 or --HSO3. The salts are usually soluble crystalline compounds
References in periodicals archive ?
Joe Krebs, Director of Protein Chemistry for Bioo Scientific: "The MaxSignal Sulfite Assay Kit is the latest addition to Bioo Scientific's existing line of enzymatic assays for the detection of additives and adulteration in food and feed samples.
We see more and more interest in these wines from wine enthusiasts who believe NSA wines provide the most pure expression of the grape and from those who have sulfite sensitivities or allergies.
Its two ionized forms in aqueous solution, sulfite and (bi)sulfite, are widely used as preservatives and antioxidants to prevent food and beverage spoilage.
This is because, like many conventional wines, they include added sulfite preservatives to prevent oxidation and bacterial spoilage.
Because of potentially severe health issues experienced by some people, the government has mandated labeling products that contain sulfites since 1988.
So all foods that are fermented--bread, cheese, beer--contain sulfites too.
There are six sulfites found in foods; sulfur dioxide, potassium bisulfite, sodium bisulfite, sodium sulfite, potassium metabisulfite, and sodium metabisulfite.
With the new HPLC technique McFeeters developed, sulfites can be detected at levels as low as 3 parts per million.
The FDA estimates that one out of every 100 people is sulfite sensitive.
Concern over sulfites may be a non issue with molasses; these days, it's difficult to find molasses that doesn't boast ``unsulfured'') on the label.
Other than sulfites, the research results about food-related allergic reactions and intolerances become very inconsistent," Wells points out.
Wine drinkers know that the sulfites used as preservatives in wine can cause headaches in some people--even death in some asthmatics (SN: 6/27/87, p.