Pork liver, which is the pig's liver, is a very nutritious food. It has been determined that 100 grams of liver contains about 4972 micrograms of vitamin A, which is 113 times that of lean meat. The iron content of 22.6 mg is 7.5 times that of lean meat. At the same time, the iron in the liver is heme iron, and the absorption rate is more than ten times higher than that of non-heme iron in plant foods. It has a good tonic effect on iron-deficiency anemia friends. Although the liver is good, there is also a risk of eating liver. The following Xiao Bian will tell you why pig liver can not eat more, what are the disadvantages of pig liver to eat more, together to understand it.
Why can't pig liver eat more?
Heavy metal and pesticide residues exceeded
Animal livers are important detoxification and metabolic organs in animals. Pig liver can be described as the largest "detoxifier" and poison "transfer station" in pigs. The toxic and harmful substances that enter the body, such as heavy metals, veterinary drugs, and pesticides, are metabolized, transformed, detoxified and excreted in the liver. When liver function declines or the intake of toxic and harmful substances is high, the liver will accumulate these harmful substances.
The investigation found that the contents of heavy metal cadmium and lead in pig livers were high, which were 0.149 mg/kg and 0.703 mg/kg, respectively, which exceeded the food hygiene standards in China and should not be eaten.
In addition to heavy metals, pig livers also tend to have higher veterinary drug residues. Investigations have found that in animal products that are commercially available, the residues of veterinary drugs in pig livers are relatively high. Although most of them do not exceed the standards, they are still relatively high compared to pork and beef. In general, animal visceral toxins such as pig liver and pig heart are often high.
Increase cardiovascular risk
The pig's liver is also high in cholesterol, and 100 grams of pig's liver has a cholesterol content of 288 mg. Insufficient cholesterol intake, especially low-density cholesterol intake, increases the risk of cardiovascular disease. For health reasons, the daily intake of cholesterol from food should not exceed 300 mg.
How much is it suitable to eat liver?
A person's daily intake of cholesterol from food should not exceed 300 milligrams, and every 100 grams of fresh liver contains as much as 400 milligrams of cholesterol. Therefore, it is best for patients with hypertension and coronary heart disease to avoid eating liver. Healthy adults, do not eat more than 50 grams of liver every day, not more than 2 times a week.
How to eat pig liver safe?
Pork liver is the main site for detoxification and excretion of certain substances in the body. Metabolically produced toxins accumulate in the pig's liver and are distributed in tens of thousands of hepatic sinusoids. Therefore, freshly bought fresh liver should not be eager to cook. Should be washed under a tap for 10 minutes, then cut into pieces and soaked in water for 30 minutes, repeatedly changing the water until the water is clear, to completely remove the remaining liver blood and bile poison. Water soaked in the liver is preferably light salt water.
In order to eliminate the parasite eggs or germs that remain in the pig's liver, the cooking time should not be too short. At least it should be fried in an acute fire for more than 5 minutes, so that the pig's liver becomes completely gray-brown and blood stains cannot be seen. Don't be coveted for a crisp taste and shorten the heating time.
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