It is best to remove the internal organs before eating, because the loach is highly resistant to mercury ions and chromium ions, so these two heavy metals may remain in the internal organs, and the loach is also a fish , in which bitter gall may cause food poisoning.
Loach meat has high nutritional value. For the introduction of loach meat, please refer to my recent Q&A. Loach meat is thick and delicious. Research [3] shows that loach also contains a variety of functional active substances, including lectins, antimicrobial peptides, superoxide dismutase, taurine, loach polysaccharides, etc. Reasons for medicinal value.
But we must also be clear that loach is also a fish. In recent years, there have been many cases of fish bile poisoning, mainly caused by acute renal failure [1], In fact, the bile toxins in bitter gallbladder can cause damage to many organs in the body, but the damage to the kidneys is the main one, and the damage to the coagulation function is relatively minor. Therefore, for safety, it is best to remove the internal organs. , including the gallbladder removed.
Research [2] found that compared with other fish, loach is more tolerant to mercury ions and chromium ions, but extremely sensitive to copper ions, which shows that if loach is raised The water quality contains heavy metal mercury ions and chromium ions, then the loach’s internal organs will inevitably have residual heavy metals mercury and chromium, and excessive intake of heavy metals will definitely be harmful to the human body. It is better to remove the internal organs of the loach before eating.
The method of removing the internal organs is not troublesome, just chop off the head, the internal organs will leak out naturally, or cut a hole in the stomach, and then scrape it with a knife, but it is more troublesome. You can also buy the loach and raise it with water, and then drop a few drops of oil in the water. The loach has a special intestinal respiration function, and it will start if the water lacks oxygen, which can help the loach to digest the stomach. The dirt in it is quickly excreted, reducing the impact of heavy metals or other dust bacteria on our body.
In general, it is best to eat loach after removing the internal organs. If you can’t handle it yourself, you can ask the market master to help you clean it. Although the nutritional value of loach is very high High, but you can’t eat too much at one time. It is best to eat it with other foods to achieve a balanced diet. This way of eating is healthy.
The author of this issue: Liao Yuying, Zhao Lichao
Beauty Editor: Peng Mingqian
References:
[1] Peng Wenping, Lin Bo. Blood purification and nursing of 65 cases of fish bile poisoning [J]. Chinese Journal of Misdiagnosis, 2009, 9(2): 381-382.
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[2] Gao Xiaoli, Qi Fengsheng, Luo Huying, et al. Acute toxicity and combined toxicity of copper, mercury and chromium to loach [J]. Journal of Aquatic Ecology, 2003, 23(2 ):63-64.
[3] Qin Chuanguang, Huang Kaixun, Xu Huibi.Bioactive molecules in loach and their pharmacological effects[J].Chinese Journal of Biochemical Medicine,2002,23(1):47-48 .
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