Food can not add nitrite, nitrite is toxic, caused by nitrite food poisoning rate is high, ingested 0.3 to 0.5 grams of nitrite can cause poisoning, 3 grams lead to death.

Nitrite poisoning:

1, is due to the consumption of nitrate or nitrite content of high cured meat products, sauerkraut and spoiled vegetables can be caused by poisoning, or mistakenly industrial sodium nitrite as salt consumption and cause, can also be seen in the consumption of nitrate or nitrite containing bitter well water, pot water, nitrites can make the normal oxygen-carrying blood oxidation of low iron hemoglobin into methemoglobin, and thus lose the blood of the blood. It can oxidize the low iron hemoglobin that normally carries oxygen in the blood into high iron hemoglobin, thus losing the ability to carry oxygen and causing tissue hypoxia.

2, nitrite is a highly toxic substance, adult intake of 0.2 0.5 grams can cause poisoning, 3 grams can be fatal. Nitrite is also a carcinogen, in the stomach acid and other environments nitrite and food in the secondary amine, tertiary amine and amide reaction to generate a strong carcinogen N a nitrosamine. Nitrosamines can also pass through the placenta into the fetus, the fetus has a teratogenic effect.

Expanded information:

Toxicity hazards

1, infantile methemoglobinemia (also known as orthoferritinosis)

Excessive nitrate intake can induce infantile methemoglobinemia, due to the large amount of nitrite in the body and the hemoglobin in the blood, so that the methemoglobin level rises, because methemoglobin can not be combined with oxygen, when the person is hypoxic, the clinical manifestations of the lips and fingernails are cyanotic, the skin appears purplish and other symptoms of hypoxia, which can lead to death.

2, infant congenital malformation

Nitrite can enter the fetus through the placenta, 6 months within the baby is particularly sensitive to nitrates, the fetus has a teratogenic effect.

3, goiter

Some studies believe that high nitrate intake can reduce the body's digestion and absorption of iodine, which leads to goiter, but whether nitrate is the direct cause of human goiter, there is still to be further evidence.

4, cancer

When using nitrite coloring, nitrite and meat amine reaction, generating nitroso compounds, or in the acidic environment for the intestinal tract is converted to nitrosamines, these nitroso compounds are carcinogenic factors.

Baidu Encyclopedia - Nitrite