E249 — пищевая добавка, консервант нитрит калия, potassium nitrite (Е249)

Potassium nitrite is the potassium salt of nitrous acid and is used as a curing agent and preservative in meat. Excessive ingestion may result in such high concentrations of nitrites in the bloodstream that reduced concentrations of oxygen are carried by haemoglobin in red blood cells, resulting in shortness of breath, dizziness and headaches. Nitrites may also form nitrosamines in the stomach, thought to be carcinogenic agents. Potassium nitrite inhibits the growth of bacteria responsible for botulism, retards development of rancidity, and preserves flavours. Less than 10% of nitrate (nitrite) intake is from cured meats, with the rest coming from mainly root vegetables. Typical products include processed meats, cured and smoked meat and fish, root vegetables. Not permitted in foods for infant and young children. Other names: nitrous acid potassium salt.



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