Brenda Tan and Matt Cowst (pictured above) are students at a college in New York. They recently completed a project based on DNA barcode technology. The so-called DNA barcode refers to a fragment taken from a standard DNA gene sequence that can be used to determine the species. They collected 217 samples from apartments, shops, etc., photographed and roughly categorized them, and sent them to the National Museum of Natural History for DNA barcode analysis. Soon after, the scientists returned their DNA sequence reports. The DNA sequence of each sample (if extracted) consisted of 650 letters. They entered it into an online search engine and compared it with the bar-coded database in the life bar code database and the gene bank to determine the species of the sample. Shockingly, 16% of the samples revealed the trick of “hanging the sheep and selling dog meat†in the New York food market. For example, expensive “goat cheese†is actually made from milk; high-priced “venison†dog food is made of beef; and the label “sturgeon caviar†is from the Mississippi River. Big hard carp. In 2008, two of their classmates discovered sushi on the “Missing Fish Name Tag†at Manhattan restaurants and markets, sparking a “sushi door†turmoil. It seems that such "mistakes" are no accident. This trick not only allows consumers to save money, but also may endanger people who are allergic to certain foods; in addition, it is also harmful to people with specific religious beliefs. Marc Stocker, a researcher and physicist at Rockefeller University, praised the students for their work and believed that "cases based on DNA bar code evidence to determine criminal facts will soon appear, although this report alone cannot lock in the retailers involved. Or products.†They eventually identified a total of 95 species; they also found quite a few other interesting results. For example, the crickets from the kitchen that were sent for inspection were not the common American quail; the feathers on the feather crows came from ostriches; Old hair brush extracted into human gene. Most DNA can be preserved after food processing, which is the key to the function of DNA barcode technology. The only exception is canned foods, which are destroyed by high temperature and acid treatment. Only one of the 21 canned samples can extract DNA barcodes. Upron Bathtub Upron Bathtub Guangzhou Aijingsi Sanitary Products Co.,Ltd , https://www.comoxvalleyhottubs.com