Mannan
Mannan-based fibers such as konjac glucomannan provide soluble dietary fiber and may aid satiety and digestive health. EFSA has noted that konjac, when not properly hydrated (e.g., in jelly mini-cups), poses a choking hazard.
What it is
Mannan is a polysaccharide composed of mannose units, found naturally in plants (e.g., konjac, palm seeds) and yeast cell walls.
Functions as a dietary fiber, thickener, and gelling agent (e.g., konjac glucomannan in foods).
Why it's flagged
- Choking hazard noted for konjac jelly mini-cups due to high gel strength.
What regulators actually say
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Regulatory status
United States — FDA
Konjac flour (a major source of mannan) is permitted in food in the U.S. with specific labeling considerations.
European Union — EFSA
Konjac (E 425) is authorized in the EU as a thickener; specific restrictions apply (e.g., not permitted in jelly mini-cups).
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