1. Toxicity problem
Some researchers believe that artificial extraction and addition of genes may not only achieve some expected effects, but also increase and accumulate trace toxins in food.
2. Allergic reaction problem
People who are allergic to a food are sometimes allergic to a food they were not allergic to before. For example, scientists added a gene of corn to the genes of walnuts, wheat and shellfish, and protein also added it along with the genes. Then, people who used to eat corn may be allergic to these walnuts, wheat and shellfish.
3. Nutrition problems
Scientists believe that foreign genes will destroy the nutrients in food in ways that people don't know yet.
Step 4 resist
When scientists add a foreign gene to plants or bacteria, this gene will be connected with other genes. After people eat this improved food, the food will transfer the drug resistance gene to the pathogenic bacteria in the human body, making the human body resistant to drugs.
5. Environmental threats
Many transgenic varieties contain bacterial genes extracted from Bacillus, which can produce a protein that is toxic to insects and pests. In a laboratory study, the larva of a butterfly died or developed abnormally after eating the pollen of milkweed plants containing Bacillus genes, which caused another concern of ecologists. Other species that are not within the scope of improvement may become victims of improved species.
Extended data:
Impact on China
After transgenic soybeans entered China, most of them flowed into edible oil processing enterprises with foreign investment background, and their products quickly occupied most of the market, thus affecting the soybean processing resources and environment in China, which was not conducive to the development of local edible oil processing enterprises.
Some local edible oil processing enterprises in China use raw materials such as non-genetically modified soybeans, which are more expensive and less competitive than genetically modified soybean oil. Under the price control of genetically modified soybean oil, the benefits of PetroChina enterprises have fallen sharply and their operations have been in trouble. Looking back on the process that China soybean market was dominated by imported genetically modified soybeans, we can clearly see that the four major international grain merchants (ADM, Bunge, Cargill and Louis Dreyfus) are full of strategic vision and intend to annex China soybean industry for a long time. First of all, change the traditional edible oil eating habits of China people;
Secondly, international grain merchants, as imported foreign capital, enjoy preferential policies and successively set up crushing and processing enterprises with imported soybeans as raw materials in China. At the same time, domestic capital is also involved in the field of oil extraction with imported soybeans as raw materials. When more and more domestic capital enters the field of soybean crushing, crushing enterprises will blossom everywhere. Therefore, China's economists and industry are intoxicated with the eastward shift of the world's soybean crushing center of gravity, China's labor force has a comparative advantage, and China's process of becoming a world processing factory has accelerated. As everyone knows, we have fallen into the pockets of the four major international grain merchants step by step.
Due to the expansion of processing capacity, the shortage of soybean raw materials has become a headache for processing and crushing enterprises. In 2004, some domestic crushing enterprises decided to set up a purchasing group to buy soybeans in the United States to increase their bargaining power. Just before the procurement team went to the United States, the US Department of Agriculture announced that the soybean harvest was poor that year.
On the same day, the price of soybeans on the Chicago Board of Trade soared from $220 per ton to $39 1, a five-year high. Shortly after the China procurement team signed a huge purchase contract and left the United States, the US Department of Agriculture clarified that the new data showed that the world soybean production would increase substantially. Soybean prices on the Chicago Board of Trade dropped rapidly to $266. Chinese businessmen suffered heavy losses and some enterprises went bankrupt.
However, some commentators believe that the excessive publicity (rather than confidentiality) of the procurement group before placing an order is the reason for pushing up market expectations, not a conspiracy.
At this time, the four major international grain merchants gave timely help to the crushing enterprises in China on the verge of bankruptcy, provided that they transferred their shares. As a result, the four major international grain merchants took the opportunity to acquire and control a large number of China crushing enterprises, and completed the layout of soybean crushing and processing industry in China. The data shows that among the 97 large-scale oil processing enterprises in China, 64 are controlled by foreign capital, accounting for 66%, and foreign capital also accounts for 80% of China's imported soybean processing capacity.
After completely controlling the raw materials, processing and market of China soybean industry chain, the international soybean futures market is making waves again. Affected by the international market, the domestic soybean futures price rose from 2600 yuan at the beginning of 2007 to 4 100 yuan at the end of 2007, and continued to soar in 2008, reaching a maximum of 5240 yuan in July. In just 18 months, the price has doubled.
Xia published his research results at the International Forum on Genetically Modified Organisms on September 25th, 2006. "This is not caused by demand, but by market monopoly. Because China is the world's largest soybean importer, the skyrocketing price has caused China to pay an additional $7.8 billion. " He said, "We are willing to spend hundreds of billions of dollars to buy genetically modified soybeans abroad and pay an extra 7.8 billion dollars, but we are not willing to subsidize farmers. Perhaps as long as 654.38 billion yuan is used for research and development of soybean seeds, farmers in China can use better seeds. "
What is even more frightening is that genetically modified soybeans are trying to further expand their territory in China. Corrupt elements and unscrupulous businessmen in China and American suppliers of genetically modified soybeans jointly set a trap for genetically modified soybeans to be mixed into China grain depot. At the end of last year, the grain department of Heilongjiang Province found that some dealers used the national preferential price to buy domestic soybeans and sold suspected imported genetically modified soybeans to the national grain depot as domestic soybeans to earn the difference.
According to the investigation of Heilongjiang Soybean Association, in June, 5438+065438+ 10, Shandong Xinchang Food Company rejected the soybeans sold by Jiamusi traders in Heilongjiang because they were mixed with suspected genetically modified soybeans. Previously, the Jiamusi trader had been selling domestic soybeans in Heilongjiang. It can be said rudely that once China's grain depot is full of genetically modified soybeans, China's soybean industry will be completely controlled by Americans, and China's national security will be more and more controlled by Americans.
Xinhua News Agency announced on the evening of June 13 that the Ministry of Agriculture recently approved the issuance of three import safety certificates for genetically modified soybeans, but did not specify the importing countries. Earlier, it was reported that the government of China had approved the import of genetically modified crops from Argentina and Brazil.
differentiate
Because transgenic soybeans are planted for insect resistance and drug resistance, the identification method should proceed from this feature. Generally, non-GM soybeans can occasionally see traces of insect pests.
In addition, non-GM soybeans are prone to insects if they are not well preserved, while GM soybeans are usually neat and almost no traces of insects can be seen.
Moreover, it is difficult to distinguish whether it is non-transgenic by germination method, because glyphosate-resistant transgenic soybeans are widely planted all over the world.
Reference: Genetically Modified Soybean _ Baidu Encyclopedia