According to reports, a good chicken essence should contain chicken powder, but because chicken powder is very expensive, some small enterprises use chicken essence as chicken powder when making chicken essence. Chicken essence uses some spices to imitate the taste of chicken and has no chicken ingredients at all. Some inferior chicken essence even uses sunset yellow pigment, which is a chemical synthetic pigment, which will be harmful to human body if eaten for a long time.
So, how should consumers buy chicken essence?
First of all, it depends on the packaging of the product. Qualified chicken essence should be packed with three layers of aluminum foil.
Secondly, you need to observe the color. If the color is too yellow, it is usually because of the addition of pigment.
Third, smell the fragrance. Real chicken essence has a lasting fragrance after heating, and it still has a fragrance after cooling.
Xiao Li is a standard "online shopper". She often buys clothes online and finds it cheap and convenient. Recently, she bought a set of underwear online. After wearing it for a few days, her skin has been itchy and swollen. I have been to the hospital before I know that the "three noes" underwear on the Internet may contain prohibited chemicals.
"Three noes" clothing has health risks, but brand clothing is actually not safe. Recently, Greenpeace, an international environmental protection organization, released a research report, saying that NPE (nonylphenol polyoxyethylene ether) was detected in clothing samples of Adidas, Li Ning, Crocodile and other 14 brands. NPE is decomposed into nonylphenol in natural environment. NP has the ability to imitate natural estrogen, which will interfere with the endocrine system and may lead to changes in sexual development of some organisms. "There are many problems with eating now. Why is there something wrong with wearing it?" For a time, the health and safety of clothing has attracted consumers' attention.
Chemicals used in the textile industry are the culprit.
In fact, the "poisoning" of clothing mainly comes from the use of a large number of chemicals in the production and processing of textiles. Teacher Wang from the School of Materials Science and Engineering of Beijing Institute of Fashion Technology told the Science Times that textile printing and dyeing auxiliaries and textile dyes are the most commonly used chemicals in textile manufacturing. Harmful substances are concentrated in the dyeing and finishing process.
According to incomplete statistics, the annual consumption of textile printing and dyeing auxiliaries in the world is nearly 3.2 million tons, with nearly 100 categories and 15000 varieties. There are also nearly 10,000 varieties of textile dyes, and the annual consumption is about 900,000 tons.
"Many of these textile chemicals contain or produce chemicals harmful to human health and ecological environment during use." Wang also pointed out that from the perspective of textile raw materials, natural fibers will have pesticide residues during planting, while chemical fibers will have chemical additives residues during synthesis.
Lu Qingsheng, Beijing Center for Disease Control and Prevention, pointed out in a paper that the main harmful substances related to clothing include formaldehyde, mildew and moth-proofing agents, fungicides, dry cleaners and dyes.
Among them, the carcinogenic aromatic amines produced by azo dyes in human body can cause bladder cancer, ureteral cancer, renal pelvis cancer and other malignant tumors, among which the intermediate benzene series can cause leukemia. In addition, heavy metal ions remaining in clothing dyes can enter the human body through the skin and accumulate in the liver, bones, kidneys, brain and other parts, which has adverse effects on human health.
However, in Wang's view, these hazards are usually not easy to appear in the short term. "When dermatitis is caused by organic volatile substances or formaldehyde, it will appear earlier. However, people tend to ignore the long-term effects of harmful substances in clothing on the human body. "
Fourth, look at precipitation. Put the chicken essence into a glass and add boiling water. The solution of high-quality chicken essence is concentrated and has less sediment.
Fifth, don't be greedy for cheap. The average cost of chicken essence products that meet the industry standards is more than 50% higher than that of fake and shoddy chicken essence.
Finally, pay attention to whether there are detailed main components on the outer packaging, and look for the GCB logo of the industry.
Experts said that although chicken essence produced according to relevant national standards is harmless to human body, consumers should also choose chicken essence according to the characteristics of different foods. If the food characteristics and flavor of the cooking object are outstanding, such as meat and fish, monosodium glutamate should be chosen instead of chicken essence, otherwise the special flavor of the food itself may be destroyed. If the cooking object is acidic dishes, such as sweet and sour, vinegar stir-fried, vinegar and pepper dishes, etc. It is not advisable to use chicken essence. Because chicken essence is not easy to dissolve in acidic substances, the greater the acidity, the lower the solubility and the worse the umami effect. The solubility of chicken essence is worse than that of monosodium glutamate, so when mixing cold dishes with chicken essence, it should be dissolved with a small amount of hot water first, and then poured on the cold dishes.
Chicken essence is afraid of high temperature. Chicken essence contains sodium glutamate, so be careful not to heat it at high temperature for a long time, otherwise it will produce toxic substances. In addition, chicken essence contains nucleotides, and the metabolite of nucleotides is uric acid, so gout patients should eat less.