which foods are the fresher, the less you can eat?
1, fresh milk.
the extruded milk, such as Brucella and Mycobacterium tuberculosis, is easy to cause zoonotic infectious diseases. In addition, this & lt; Fresh milk & quot; It can not guarantee the environmental sanitation, container disinfection and health status of milkers. Therefore, it is safer for people to go to the supermarket to buy milk produced by regular manufacturers.
2, fresh tea.
the so-called new tea refers to the tea that has been picked for less than a month, such as the spring tea of the season. The newly picked spring tea contains tannic acid, alkaloids and other substances with strong activity. If you drink in large quantities, it can make people’s nervous system extremely excited. It seems that the blood circulation is accelerated and the heart rate is accelerated, which makes people feel flustered. Therefore, should pay attention to drink new tea should not be too thick, excessive, it is best to place for a period of time, wait for the polyphenols in tea after partial oxidation.
3, fresh day lily.
fresh daylily contains colchicine, which can be transformed into toxic substances in the body after being absorbed by the intestinal tract, causing poisoning of consumers. In contrast, dried day lily in the production process after steam fumigation, drying and other processes, can remove most of the colchicine, more safe. Colchicine is soluble in water, therefore, if you eat fresh day lily, you must first go through blanching, soaking and other processes, dry day lily had better be soaked before eating.
4, fresh Auricularia auricula.
fresh Auricularia auricula contains a special component, the chemical name is & quot; Porphyrin;. Porphyrin is a kind of light sensitive substance. After people eat fresh Auricularia auricula, the sun irradiation will cause plant solar dermatitis, which can cause skin pruritus, and the exposed part of the skin will be red, swollen and itchy. Dried Auricularia auricula is the finished product after exposure treatment, which will decompose most of the porphyrins in the process of exposure, and soak in water before eating, the remaining toxins will dissolve in water, making the dried Auricularia auricula non-toxic. It should be noted that the water should be changed several times when soaking dry agaric.
5, fresh pickles.
fresh vegetables contain a certain amount of nitrate. During the salting process, it will be reduced to nitrite. After the concentration reaches a peak, nitrite is gradually used or decomposed by bacteria. Nitrite is carcinogenic to some extent. Generally speaking, the most nitrite in pickles occurs between two or three days to more than ten days after pickling. Therefore, pickles should be eaten after 20 days.
6, fresh jellyfish.
fresh jellyfish contains toxin and is not edible. Only through salt iodized salt and alum to dehydrate fresh jellyfish several times, can the toxin be discharged.
7, fresh pig liver.
some people like to eat & lt; Fresh and tender & quot; Therefore, when cooking, for the sake of freshness and tenderness, the fresh pork liver is often quickly fried and eaten. As everyone knows, there are great hidden dangers in doing so: first of all, pig liver is the largest detoxification organ in pigs, and various toxic metabolites gather in the liver. If the heating is not thorough and sufficient, some toxic substances may remain, and people may cause diseases after eating. Secondly, it is difficult to kill some pathogenic bacteria or parasite eggs in pig liver by rapid cooking, which will damage human health after eating.