Eighty percent of papaya in the market is genetically modified food. The results showed that almost all the domestic papaya sold in various places contained two antibiotic resistance genes: kanamycin resistance gene (nptII) and tetracycline resistance gene (tetR), which were resistant to kanamycin and tetracycline respectively. These two kinds of antibiotics are listed as the second level by the World Health Organization, which means that these two kinds of antibiotic resistance genes should not appear in food.

Extended information The so-called genetically modified food is to transfer one or more exogenous genes into a specific organism through genetic engineering technology, and make it effectively express the corresponding products (polypeptide or protein). This process is called transgenic. The food processed and produced from genetically modified organisms is genetically modified food.

According to the different sources of genetically modified food, it can be divided into plant genetically modified food, animal genetically modified food and microbial genetically modified food. ?

From the world's earliest transgenic crop (tobacco) was born in 1983 to the extended-ripening and fresh-keeping transgenic tomato/kloc-0 developed by Monsanto in the United States in 1994, the research and development of genetically modified food has developed rapidly, and the variety and output of products have also increased exponentially. As a new biotechnological means, transgenic food is immature and uncertain, which makes the safety of genetically modified food become the focus of attention. ?

References:

Baidu encyclopedia-genetically modified food