1, vitamin C is added to pickled vegetables. Nitrate and nitrite are widely found in vegetables. Nitrate is the main component in fresh vegetables, and nitrite is much lower than nitrate. The nitrite content in pickled and off-flavor vegetables will increase obviously, from several times to hundreds of times. Fresh vegetables are generally boiled in water, sunny and washed with hot water, which can eliminate cancer. The best way to preserve stale vegetables is to boil them in water, but it will affect the taste of preserved vegetables.
2, bacon, sausage bacon, sausage and other meat products, usually through the presence of nitrite to achieve the role of anti-corrosion and color protection, do not fry, at high temperature can promote the synthesis of nitroso compounds, so that the content of nitrosopyridine, dimethyl thionine and other carcinogens increased. Therefore, it is very important to avoid eating fried sausages and bacon in daily life. Before eating, you can steam it and pour out the soup to reduce the amount of nitrite.
3. Boil salted fish first. Salted fish also contains more nitroso compounds, so it is best to boil it in water or steam it before eating, and the soup should be removed. However, some people think that nitroso compounds on the surface of fish can be removed by sunlight, but the carcinogens in the deep part of fish are not damaged much. Eat with some fresh fruits and vegetables.
Shrimp skin and shrimp skin contain volatile nitroso compounds such as dimethylnitrosamine. Therefore, it is best to cook with clear water before eating, or directly expose to the sun for 3 ~ 6 hours, which can also achieve the purpose of eliminating and reducing carcinogens.
Fresh fruits and vegetables are rich in vitamin C, which is beneficial to prevent the harm of N- nitroso compounds and can be eaten with the above foods.