Crayfish meat shells belong to different garbage？ July rumors focus on hot topics.

　　When the summer heat hits the midsection, the weather is so hot that there is nowhere to hide. In the hot sauna days, eating crayfish and drinking a glass of cold beer, not to mention how pleasant it is, but recently people dare not enjoy it so much because of some rumors.

　　The "classification map of crayfish after death" transmitted by the internet has made many people ask their souls: "Delicious and attractive crayfish, what kind of garbage are you?" After that, the takeaway order of crayfish was silently cancelled; And the saying that "you can’t drink cold drinks in dog days, you have to drink hot water to force the cold" has made some people put down the bottles of iced beer.

　　Are we destined to have a tasteless summer? The reporter of Science and Technology Daily interviewed relevant experts, shattered the rumors one by one, and gave you a cool summer as usual.

　　Proverbs 1

　　Lobster meat is wet garbage and lobster head is dry garbage.

　　It’s the season to eat crayfish again, but since many places in the country have entered the "mandatory era" of garbage sorting, and a "classification map of crayfish after death" has been posted on the Internet, crayfish lovers are no longer afraid to eat without scruple. According to the classification map, the whole crayfish is wet garbage, and the yellow lobster head is dry garbage; Lobster meat and lobster yellow are wet garbage, and lobster shells are dry garbage.

　　Many netizens said that eating crayfish is refreshing for a while, but after eating it, the garbage classification is heartbroken, so don’t eat it. In fact, throwing a crayfish is not as complicated as the picture. This picture is wrong.

　　Shanghai Waste Management Office responded through WeChat WeChat official account that crayfish, lobster shell, lobster head, lobster yellow and lobster meat all belong to wet garbage.

　　In April 2019, the "Guidelines for the Classification of Domestic Waste in Shanghai" also clearly pointed out that aquatic products and their processed foods (fish, fish scales, shrimp, shrimp shells and squid) are all wet wastes.

　　"It is not difficult to distinguish between dry and wet garbage. Dry garbage refers to garbage that can be burned, and wet garbage is garbage that is perishable, easy to crush and compostable. It is a bit taken for granted that crayfish shells are classified as dry garbage in the above classification map. In fact, it is relatively easy to rot and crush, so it belongs to wet garbage. " Yi Zhu, an associate professor at the College of Food Science and Nutritional Engineering of China Agricultural University, explained.

　　If you still can’t tell what kind of garbage is on your hand, remember the official recommendation of Shanghai for garbage classification: recyclable materials — — Glass, gold, plastic, paper and clothing; Harmful waste remembers the formula — — Medicine (oil) (electric light); The principle of wet garbage recording — — Perishable and easy to crush; The rest is dry garbage.

　　Proverbs 2

　　You can’t eat cold drinks in dog days, but drink hot water to force the cold.

　　Cicadas sound, summer is strong, and the heat in the dog days seems to be dependent on cold drinks. However, a recent health tip circulating on the Internet pointed out that all iced drinks should be rejected in dog days, otherwise the cold will invade and cannot be discharged. Insist on drinking hot water in the dog days, so as to force out the cold that goes deep into the bone marrow. This is called treating winter diseases in summer.

　　At first glance, there is some truth, but is this really the case?

　　The doctor reminded that the statement that "don’t drink iced drinks and eat iced food" on the dog days is too absolute. In fact, for most people, there is no problem of completely avoiding cold drinks, and eating some cold drinks properly will not cause harm to the body.

　　Li Fangling, chief physician of Chinese Medicine Department of Beijing Geriatric Hospital, told the media: "In summer, the temperature is too high for people to stand. At this time, eating moderate cold drinks can relieve the heat and make people feel comfortable."

　　However, Yi Zhu also pointed out that drinking ice water when it is very hot will cause rapid contraction of blood vessels, and the oxygen consumption of heart, brain and other organs will increase, which will cause blood pressure fluctuation, especially for the elderly with cardiovascular and cerebrovascular diseases. For young people, eating ice cream and drinking iced drinks in dog days may lead to sudden headaches. And eating too much cold food can also cause gastrointestinal cramps and diarrhea. "Therefore, we do not encourage unrestrained use of cold drinks to relieve the heat in the dog days." She said.

　　However, the theory that drinking hot water can force out the cold is not recorded in Chinese medicine. "Although it is not advisable to be greedy and cold in the dog days, it is a bit exaggerated and there is no scientific basis to force out the cold that has penetrated into the bone marrow for many years by drinking hot water in the dog days. The way to maintain health advocated by Chinese medicine lies in persistence all year round, and improving physical fitness is not a one-off event. " In Yi Zhu’s view, drinking hot water in summer is generally suitable for people who need to sweat because of a cold, but drinking overheated water will also cause damage to the digestive tract mucosa, and it is advisable to drink warm water in small quantities for many times in hot weather.

　　Proverbs 3

　　Famous biologists have developed cold-resistant mosquitoes.

　　The most annoying thing in summer is mosquitoes besides the high temperature. People are afraid to avoid this annoying creature, but a screenshot of a recent report on the emergence of cold-resistant mosquitoes surprised netizens. The report said: Professor Li, a famous biologist in China, has worked hard for more than 30 years and successfully cultivated cold-resistant mosquitoes. This mosquito can also come out to bite people in winter, which fills the gap that there are no mosquitoes in winter in China … … The source of the article also marked the authoritative media, but the description of the article made people feel incredible. Some netizens joked: "We don’t need mosquitoes in winter, so it’s better not to fill this gap."

　　According to the reporter’s review, the authoritative media marked at the source of the article has never reported it at all. This is actually an old story full of plastic sense. This paragraph first appeared in 2014, and the version has been iterative since then.

　　In fact, there are many loopholes in the above rumors that can be seen at a glance. For example, it is impossible for authoritative media reports to have the nonstandard title of "Professor Li, a famous biologist in China". Moreover, from the scientific common sense, it is not uncommon for mosquitoes to appear in winter, and experts have already made popular science. Mosquitoes are at the temperature of 15℃— The vitality is still very strong at 16℃. Even in winter, if the indoor temperature is high, it can wake up the dormant mosquitoes.

　　Proverbs 4

　　Common genes in genetically modified crops appear in China.

　　Recently, many WeChat groups are spreading an article — — British Research: Genes common in genetically modified crops have appeared in China, please be careful of the next generation. Accordingly, some WeChat WeChat official account articles with 100,000 hits vowed to write: "This is another proof of the harm of genetically modified weapons to Chinese."

　　Is this really the case? That’s not true. This is actually a patchwork of fishing articles and rumors about genetically modified foods, which is an advertisement for the platform of non-genetically modified food grocery stores.

　　According to this article, an article published in the British academic journal Shelley Genetics Newsletter has attracted the attention of domestic academic circles. Professor Victor Stein, a geneticist from the German Tesrosa Medical Center, is currently conducting an international genomics research project in China … …

　　Lin Min, a researcher at the Institute of Biotechnology, Chinese Academy of Agricultural Sciences, said that there was no British academic journal Shelley Genetics Newsletter, and the so-called Tesrosa Medical Center was also invented.

　　The article also said: "Almost all genetically modified foods contain SCoAL gene." "SCoAL will synthesize succinic acid in the human body, which is highly acidic and corrosive and may cause blindness when it enters the eyes."

　　However, Jiang Tao, a senior engineer at the Biology Research Center of the Institute of Genetics and Development, Chinese Academy of Sciences, pointed out that the gene name SCoAL was concocted.

　　"And succinic acid, also known as succinic acid. Nutritional supplements containing succinic acid are food additives and dietary supplements, which are approved as edible safety by the US Food and Drug Administration. All living things produce succinic acid. " Lin Min said.