Virtually every one of us virtually ingested genetically modified foods, but we did not know it. The debate on the safety of genetically modified foods continues. However, in the Chinese people's rice bowl, the phantom of genetic modification has long been lurking.
At present, only GM crops approved for planting in China are cotton and papaya, and soybeans, corn, rapeseed, cotton, and sugar beet that have been approved for import as processing raw materials have not been approved for commercial production of genetically modified staple foods. In recent years, genetic events have been continuously exposed, and the controversy over genetic transformation continues to ferment. Of the rice products exported to the European Union in 2013, 25 were found to contain genetically modified components. In April 2014, a CCTV reporter randomly purchased 5 bags of rice in a large supermarket in Wuhan. The test results showed that there were three types of genetically modified ingredients. So far, the Chinese government has never approved the commercial cultivation of any kind of GM rice, nor has it approved the import of GM rice, which means that the GM rice and rice products that appear on the market are illegal. These rice products are suspected to flow near people's dining tables along the path of genetically modified rice researchers, seed companies, grassroots seed stations, farmers, and consumers.
As early as 2002, when the state had promulgated and implemented the Sanitary Measures for the Administration of Genetically Modified Foods, it was necessary to label the food products with obvious genetically modified components. The new version of the Food Safety Law adds provisions that the production and management of genetically modified foods should be marked in accordance with regulations. At the same time stipulated that if not marked according to the provisions, confiscation of illegal income and production tools, equipment, raw materials, etc., the maximum amount of value of the goods can be imposed on the amount of five times or more and ten times the fine, the circumstances are serious ordered to stop production and business until the license is revoked. However, products on the market are often indistinguishable from the expression of ambiguity, even if they do not mention GM foods. In May of this year, the report on genetically modified foods sold by supermarkets in the northern and southern districts of the three places issued by the Green World Peace Organization revealed that over 30% of the samples tested were found to contain genetically modified ingredients, including guest chips and vitamins. Vitamin-type soymilk, and Nestle's egg milk stars, etc., have no genetically modified identification on the packaging of these products.
Identification of genetically modified foods
The Internet has spread a trick to rapidly identify genetically modified vegetables. In the article, it reads: When you buy vegetables, you see the heads are uniform, the body is long, and the color and luster are genetically modified vegetables; the flavor of traditional vegetables is different from that of traditional vegetables; Seasonal vegetables are also genetically modified. Is such a criterion reliable?
A professor of related research at South China Agricultural University said: “The fruits and vegetables on the market, especially some high-end fruits and vegetables, are listed after being sorted. During the sorting process, some small, incomplete fruits and vegetables have been Excluded, not to say no, but you did not see.Fruits and vegetables grow large and grow well, and have a lot to do with fertilization and application of pesticides, can not see the good-looking is to say that genetically modified. Transgene can not be easily identified with the naked eye. "Strictly speaking, crops, vegetables, fruits, animals, etc., cannot accurately distinguish whether or not genetically modified from the external form," said Chen Yiwen, consultant of the Disaster History Professional Committee of the Chinese Disaster Prevention Association who has many years of research experience in genetically modified foods. Transgenics can only be distinguished by the use of professional instruments and scientific detection methods by conscientious professionals, and detection is becoming more and more difficult."
Genetically modified food testing
Detection of DNA is currently the most commonly used and most effective method for the detection of genetically modified foods. Quantitative PCR (qPCR) technology is currently the mainstream and related products account for half of the global molecular diagnostics market. However, due to the complicated nucleic acid detection process, high price of nucleic acid amplification signal detection equipment, and high requirements for laboratory hardware conditions, it is limited to the high-end market, and it is difficult to popularize and popularize, and the needs of the grassroots and testing organizations cannot be met. Based on this situation, Prof. Shi Lei, the chief biological scientist of DIAO, led his team to develop a new constant-temperature fluorescence nucleic acid amplification molecular detection platform. The equipment is simple, rapid and accurate, and the whole reaction process is constant at 63°C. The operation is simple and easy to promote. It is molecular detection. Another revolution in technology has broken through the bottleneck of the existing transgenic detection technology and really opened the market for the application of molecular detection methods at the grassroots level. In the near future, we expect that the foods seen in supermarkets will pass the inspection and be clearly identified, and will no longer have food safety hazards. People can eat with confidence and drink with peace of mind.
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