Yacón
Yacon root and yacon syrup contain high levels of fructooligosaccharides that pass largely undigested in the upper GI tract and ferment in the colon. Reported effects include flatulence, bloating, and diarrhea at high doses.
What it is
Tuberous root of Smallanthus sonchifolius, a South American plant; high in fructooligosaccharides (FOS) including inulin.
Sweetener (yacon syrup), prebiotic ingredient, root vegetable.
Why it's flagged
- GI symptoms (gas, bloating, diarrhea) at higher intake
- novel food classification in EU with limits
What regulators actually say
"Yacon syrup is included in the Union list of authorised novel foods with specified conditions of use, including a maximum daily dose of 20 g for the supplementary food category."
"Yacon syrup at higher doses produced significant gastrointestinal effects including nausea, flatulence and diarrhoea in human trials."
Regulatory status
United States — FDA
Yacon syrup marketed as a conventional food / supplement; specific GRAS notices not generally on file.
European Union — EFSA
Yacon syrup authorized as a novel food under EU Regulation 2017/2470 implementing 2015/2283.
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