Be wary of eating the top 10 foods fresh

"Eat fresh!" This is a sentence that is often put on people's lips In general, for most foods, the fresher they are, the higher their nutritional value, the better their taste, and the more attractive their color When they are placed for a long time, their color, fragrance, etc will become worse, their texture will be reduced, nutrients will be lost, harmful substances will accumulate, and even they will become rotten, which will lead to food poisoning However, for some foods, "fresh" often means that there may be a risk of food poisoning 1 Some people like to eat "fresh and tender" pork liver Therefore, when cooking, in order to be fresh and tender, they often stir fry the fresh pork liver quickly and eat it As we all know, there is a big hidden danger in this way: first of all, pig liver is the largest detoxification organ in pig body, and various toxic metabolites gather in the liver If the heating is not thorough and sufficient, it may cause some toxic substances residues, and people may induce diseases after eating Secondly, it is difficult to kill some pathogenic bacteria or parasite eggs in pig liver by rapid cooking and frying, which results in damage to human health after eating 2 Fresh milk has been reported that farmers in a city take their cows to the streets and sell them now, which is very popular with the public However, experts pointed out that this approach is not desirable Because of the bacteria in the milk, such as Brucella, tuberculosis and so on, it is easy to cause zoonosis In addition, this kind of "fresh milk" can not guarantee the environmental health of milking, the disinfection of containers and the health of milkers Therefore, it is safer for consumers to go to the supermarket to buy milk produced by regular manufacturers 3 The so-called fresh tea refers to the tea that has been picked for less than one month, such as the spring tea in that season Wang Yi told reporters that the spring tea just picked contains tannins, alkaloids and other substances with strong activity If it is drunk in large quantities, it can make people's nervous system extremely excited It seems that the blood circulation is speeding up, and the heart rate is speeding up, which makes people feel flustered Therefore, it should be noted that drinking new tea should not be too thick or excessive It is better to keep it for a period of time and drink it after the polyphenols in the tea are partially oxidized 4 Try to avoid eating fresh cauliflower Colchicine is contained in fresh cauliflower, which can be transformed into toxic substances in the body after being absorbed by the intestine, causing poisoning to the consumers In contrast, the dried cauliflower can remove most of colchicine through steam fumigation, air drying and other processes, which is safer Colchicine is soluble in water Therefore, if you eat fresh broccoli, you must first go through the process of blanching, soaking and boiling It is better to soak the dried broccoli before eating 5 Dried Auricularia auricula is safer than fresh Auricularia auricula Because fresh agaric contains a special component, chemical name "porphyrin" Porphyrin is a kind of light sensitive substance After people eat fresh Auricularia, it will cause plant sunlight dermatitis and skin itching after being exposed to the sun The exposed part of the skin will appear swelling and itching pain Dried Auricularia is the finished product after insolation treatment During the insolation process, most porphyrins will be decomposed Before eating, it will be soaked in water The residual toxins contained in it will be dissolved in water, making the water-borne dried Auricularia non-toxic It should be noted that when soaking the dried agaric, you need to change the water several times 6 Fresh pickles and vegetables contain a certain amount of nitrate In the process of salting, it will be reduced to nitrite After the concentration reaches a peak, nitrite will be gradually used or decomposed by bacteria Nitrite has certain carcinogenicity Generally speaking, the most nitrite in pickles occurs between two or three days and ten days after the start of pickling Therefore, pickles are best eaten after 20 days 7 Fresh jellyfish fresh jellyfish contains toxin and is not edible Only through salt iodized salt and alum to dehydrate the fresh jellyfish several times can the toxin be exhausted 8 The bottled water is often sterilized with ozone before being bottled, so the bottled water just filled contains high concentration of ozone, which has potential hazards to human body It's better to keep the bottled water for 2 days, so that the ozone will disappear naturally before drinking 9 When the fruits in the orchard are mature, many orchards engage in picking activities, and many people think that fresh fruits are more pleasant to eat In fact, any fruit in the orchard can't avoid spraying pesticide now, and there will be some diseases and insect pests If you don't clean, disinfect or peel it, you can take it off the branch and put it in your mouth to chew, which is quite harmful 10 Fresh wild vegetables many citizens like to eat natural fresh wild vegetables when they visit the scenic spot In fact, many natural wild vegetables now grow near garbage dumps or polluted rivers, which are hard to clean If you eat contaminated wild vegetables, it is harmful to your health.