Traditional Culture Encyclopedia - Traditional stories - non transgenic soybean
non transgenic soybean
The development of transgenic soybean is to cooperate with the use of glyphosate herbicide. Herbicide is selective and non-selective. Glyphosate is a non-selective herbicide that can kill many plants, including crops. In this way, although this herbicide has a good effect, it is difficult to put it into use. The principle of glyphosate killing plants is to destroy EPSPS synthase in chloroplasts or plastids of plants. Through transgenic methods, plants can produce more EPSPS enzymes, make crops resistant to glyphosate, and prevent crops from being killed by glyphosate herbicides. With such genetically modified soybeans, farmers do not need to use a variety of herbicides as in the past, but only glyphosate can kill all kinds of weeds. At present, there are many other glyphosate-resistant transgenic crops besides soybeans, including rape, cotton and corn. In addition to glyphosate-resistant crops, there are also herbicide-resistant crops, but glyphosate and glyphosate have different principles of killing plants and different genes for cultivating these two crops. At present, genetically modified soybeans are mainly used to extract soybean oil. \x0d There are two concerns about genetically modified soybeans, one is from the health point of view, and the other is from the ecological point of view. The ecological viewpoint includes the appearance of super weeds and the influence on native soybean varieties in China. Greenpeace's current activity is to let Nanshun Oil Co., Ltd. provide non-GMO soybean oil. \x0d We can analyze how realistic these concerns are based on some basic knowledge and common sense. \x0d From the health point of view, it is whether the genetically modified soybean oil contains harmful ingredients. As for edible oil, we know that its main component is triglyceride, and the function of gene transferred from transgenic soybean is to make plants produce more EPSPS enzymes, which has nothing to do with the composition of vegetable oil, so the theme component of soybean oil has nothing to do with whether it is produced by transgenic plants or not. The key is whether some trace amounts are mixed into it, thus affecting people's safety. These harmful ingredients are suspected to come from the following aspects. First, the transferred gene fragment enters the human body. Genes that affect humans. Second, too much EPSPS synthetase enters the human body, thus affecting human health. Thirdly, transgenic plants may have functions unknown to human beings, that is, plants can synthesize some substances harmful to human health, which will affect human health together with soybean oil. Fourth, crops may suffer too much glyphosate herbicide, which may enter the human body with soybean oil and affect human health. \x0d For genes that affect human health, this can be said to be completely nonexistent. It is not difficult to understand that if the transferred gene fragments can affect human genes, then the conventional genes of food can also affect human genes. For humans, both are foreign genes from outside the human body, and there is no difference. Physiologically speaking, people can only absorb small molecules, genes are located in DNA, and DNA is macromolecules. Nucleotides that break down into small molecules in the digestive tract. The genetic information recorded on DNA is only the arrangement order of nucleotides. If it is digested into independent nucleotides, there is no sequence and no genetic information, it is no longer a gene. EPSPS enzyme is a kind of protein, and protein is also a kind of macromolecule, which will become amino acids after digestion. There will be no enzyme. There may be a worry about whether this transgene has other functions that people don't know, but if it does, it is very small. It's just a single gene fragment that people know better. On the contrary, it is more difficult for human beings to predict the effect of new varieties cultivated by traditional methods. At the same time, the existing detection methods have not found that genetically modified soybean oil contains harmful components to human body. Genetically modified soybean oil has been used for quite a long time, and no examples of problems to human health have been found. For the problem of herbicide residues, firstly, it is not only genetically modified crops that use herbicides, but also the problem of herbicide residues in food can be detected according to relevant food safety laws and regulations, which is not worrying. \x0d From an ecological point of view, first of all, don't worry about preventing glyphosate soybeans from becoming super weeds. Because soybeans can only resist glyphosate, other herbicides, pests and diseases, and have no other competitive advantages, the possibility of transgenic soybeans becoming weeds is no different from that of traditional soybeans. Soybean has been planted in China for thousands of years, but it has not formed serious weeds. At the same time, crops that can resist herbicides are far from limited to genetically modified soybeans. \x0d Don't worry about the impact on local soybean resources. There are two key links here. First of all, soybeans are self-pollinated. Second, it is only imported from abroad, and it is not planted in China. There is only one way to threaten local soybean resources, that is, genetically modified soybeans bloom near local soybeans and cross with local soybeans, so that the offspring produced by local soybeans have genetically modified ingredients. After a little analysis, we know that this probability is very small. First of all, we don't grow genetically modified soybeans. If soybeans bloom, there will be soybeans scattered in the field or someone will steal them to grow them from the time they enter the customs to the time they are processed into soybean oil in the processing plant. This probability is very small. China's native soybeans are concentrated in the northeast, and the soybean oil processing plant that Greenpeace mainly opposes is in Shenzhen. If a few beans are lost in Shenzhen, they will be passed down from generation to generation and spread to the northeast. This is not so easy to achieve. Of course, not all local soybean varieties are located in the northeast, and not all soybean oil processing plants are located in Shenzhen, but if the distance factor is considered, this discount will still be made. Even if there are many genetically modified soybeans in full bloom around the local soybean producing areas, it does not necessarily pose a great threat. This is because soybeans are self-pollinated, although cross-pollination occasionally leads to hybridization. However, this ratio is very small. Even if hybridization occurs, the offspring of hybridization will have an advantage enough to make one or more local varieties disappear, and then there will be the problem of occurrence probability. Considering these factors comprehensively, the impact will be even smaller. I'm thinking, is it environmental protection or waste to spend so much effort for such a trivial result? .
What is the difference between genetically modified soybeans and non-genetically modified soybeans?
On the surface, it makes no difference. If the food is not labeled, it is impossible to see whether the genetically modified food is harmful to people. The answer is obvious.
Look at the public reports 1. 1997 German farmer Krone began to plant Syngenta Bt- 176 corn experimental field. In the first three years, corn grew well and there were no pests. 200 1 when he fed the corn to the cows, the cows began to have severe diarrhea and stopped producing milk. Finally, he lost 70 cows.
2.1In the autumn of 998, Professor Puztai of the Lovett Institute in Scotland publicly declared on TV that his experiments proved that the kidneys, thymus and spleen of experimental mice grew abnormally or atrophied or grew improperly, the brain shrank, many important organs were destroyed and the immune system was weakened. From 3.65438 to 0999, John Losey, a researcher at Cornell University in the United States, published a report in the British magazine Nature, feeding butterflies with leaves coated with Bt transgenic corn pollen, resulting in 44% of larvae dying.
4. 1997- 1998, Britain and other experimental analysis found that genetically modified food caused some animal health abnormalities and abnormal planting areas. The research funded by British * * * shows that some abnormal phenomena appear in mice that eat transgenic potatoes, such as early symptoms of liver cancer, testicular hypoplasia, partial atrophy of immune system and nervous system, etc.
V. 1998. EU countries have passed laws to strictly restrict the operation of genetically modified agricultural products in laboratory environment or closed areas. 6. In 2004, the transgenic Bt- 176 corn developed by Syngenta broke the scandal. Farmers in northern Hesse, Germany, began to plant Bt- 176 corn in 1997, and used it as supplementary feed for dairy cows. In 2000, when farmers began to increase the proportion of this corn in the feed, all the cows died.
In 2004, Professor Herbik from the Institute of Geophysics of Swiss Federal Institute of Technology found that the Bt toxin used to kill the European corn borer in Bt- 176 could not be decomposed, eventually poisoning dairy cows. 7. On May 22, 2005, the British Independent also disclosed a report by Monsanto, a well-known biotechnology company, saying that rats fed with genetically modified food had organ variation and blood composition changes.
Eight, 2005165438+1October1June A research report published by CSIRO showed that a four-week experiment showed that mice fed with genetically modified peas had inflammation in their lungs, and they had allergic reactions, which made them more sensitive to other allergens, and accordingly stopped taking 65438. In 2006, Irina, a scientist at the Institute of Advanced Neuroactivity and Neurophysiology of the Russian Academy of Sciences? Dr almakova's research found that more than half of the young mice who ate genetically modified soybeans died in the first three weeks after birth, which was six times that of the young mice who did not eat genetically modified soybeans.
X. In X.2007, with the support of Austria, Professor Zetek and his research team conducted experiments on the hybrid of transgenic corn NK603 (herbicide-resistant) and transgenic corn MON8 10 (Bt-resistant) developed by Mondushan Company. After 20 weeks of observation, it was found that transgenic products affected the reproductive ability of mice.
In 2008, Italian scientists conducted a long-term experiment. They fed glyphosate-resistant genetically modified soybeans to female mice for 24 months and found that the livers of female mice who ate genetically modified soybeans were abnormal.
12. In June 5438+ 10 and June 5438+065438+ 10, 2007, American media reported that after long-term careful tracking, it was found that two kinds of genetically modified corn were harmful to the survival of butterflies, and the threat to ecological environment safety had exceeded the acceptable level. To this end, the EU has initially decided to ban the sale and use of genetically modified corn seeds.
Thirteen, in 2007, French scientists confirmed that a genetically modified corn produced by Monsanto was toxic to human liver and kidney. 14. In 2008, American scientists also confirmed that long-term feeding of genetically modified corn would damage the immune system of mice, and the research results were published in the Journal of Agricultural and Food Chemistry in the same year.
15. On February 22nd, 2009, 65438, the French Biotechnology Committee finally announced that the disadvantages of genetically modified corn outweigh the advantages, which is equivalent to permanently abolishing the cultivation of genetically modified crops in France. 16. The research results published in the International Journal of Biological Sciences in June 5438+February 2009 showed that three kinds of genetically modified corn from Monsanto could damage the liver, kidney and other organs of mice.
Three genetically modified corn varieties, one of which is designed to resist broad-spectrum herbicides (so-called glyphosate-resistant herbicides), and the other two contain protein from bacteria, have pesticide characteristics. This study uses Monsanto's own raw data.
17. On July 28th, 2004, the National Academy of Sciences of the United States completed a special study and released a research report, pointing out that genetically modified foods will cause unpredictable damage to host DNA, but with the existing auditing and monitoring system, these damages cannot be found by American institutions. The National Academy of Sciences listed the abnormal conditions that were not found during the review of genetically modified foods:-Mice that ate genetically modified foods such as genetically modified corn had abnormal blood cells and liver cells, and their livers were heavier than those that did not eat them; -Pigs that have eaten genetically modified corn have false pregnancy or infertility on farms in the Midwest of the United States; -Abnormal death of dairy cows eating genetically modified corn feed in German experimental farm; -The mortality rate of chickens using genetically modified feed is twice as high as that using natural feed; -after the emergence of genetically modified soybean food in the British market, residents' allergies increased by 50%, and the same situation occurred in Brazil; -Genetically modified corn, which has long been considered "safe", is not as effective as the promoters say. For example, the skin, small intestine and respiratory system of Filipino consumers have abnormal reactions; 18. From 2000 to 200 1 year, it was further confirmed that the ecological environment in transgenic planting areas was abnormal. For example, there is no abnormality in the transgenic corn varieties themselves, but the wild ecological environment around them is abnormal, while the field tests of transgenic sugar beet and other varieties show that they are abnormal in themselves and their environment.
To this end, the agricultural departments of the United States, Canada, Britain and the European Union countries urgently set up a working group on agricultural ecological environment protection and began to closely monitor the genetically modified planting areas around the clock. Nineteen, the authoritative science in Britain.
What's the difference between genetically modified soybeans and non-genetically modified soybeans … which is better …? Seek an answer
The fundamental difference is that genetically modified soybeans contain DNA carried by non-soybean species. At present, the advantages of this transgenic soybean are: the yield of transgenic soybean is 50%~ 100%, it is resistant to pests and diseases (insects will die because of protein's indigestion and possible abnormal coagulation), and the sum of protein and fat content is much higher than that of non-transgenic soybean. The disadvantage is that transgenic soybeans consume much more soil than non-transgenic soybeans, so rotation is needed.
It should be noted that 1, transgenic soybeans and non-transgenic soybeans can cause allergic reactions in some people. 2. Genetically modified soybeans are basically used in oil chemical industry. In the process of fat extraction, the protein part containing transgenic DNA was separated, so there is no possibility of entering edible oil. Soybean oil produced by genetically modified soybeans and non-genetically modified soybeans is exactly the same. 3. Whether cross-species DNA fusion can be transmitted between two food chains has been studied all over the world, but there is no reliable experimental discovery yet. This is why Americans also eat a lot of genetically modified soybean oil, genetically modified corn starch and alcohol, and use genetically modified soybean meal and corn flour as feed.
On which good question, er, genetically modified soybeans are good for cash crops and petrochemical needs. As human beings, it is better to eat bean curd and bean paste directly, or to use non-genetically modified soybeans!
What is the difference between genetically modified soybeans and non-genetically modified soybeans? Specific point
We can't distinguish genetically modified soybeans from non-genetically modified soybeans in appearance and taste.
Generally speaking, it can only be distinguished from the origin and price. Domestic supermarkets generally sell non-GM Northeast soybeans with labels.
Generally, cheap soybeans on the market are generally genetically modified soybeans. This is due to the agricultural subsidies of the US imperialists and the monopoly of the four major grain companies under the US imperialists, which makes the imported genetically modified soybeans a few hairs cheaper than the domestic native soybeans. It can also be distinguished by the comparative test of feeding transgenic soybeans to mice. 1 mice died 50% within 3 weeks. 2. The testicles of mice fed with genetically modified soybeans are abnormal. The testicles of mice fed with ordinary soybeans are normal. 3. Mice fed with genetically modified soybeans are short and normal. 5. The proliferation of gastric cells in mice fed with transgenic soybeans is unknown, while those fed with ordinary soybeans are normal. 6. Liver cells of mice fed with genetically modified soybeans were abnormal, while mice fed with ordinary soybeans were normal. At present, transgenic technology is far from mature. Long-term consumption of genetically modified foods is harmful to reproductive health, development and immunity.
What is the difference between genetically modified soybeans and non-genetically modified soybeans? What are the disadvantages of genetic modification?
What is the difference between genetically modified soybeans and non-genetically modified soybeans?
The important reason why genetically modified foods are not recognized by everyone is that many genetically modified crops have introduced toxic peptide genes in order to resist pests and diseases. This gene will produce a toxic peptide in plants. When pests eat crops, toxic peptides will contact with digestive enzymes in pests, producing toxic substances, poisoning pests, thus achieving the purpose of resisting pests and diseases. Transgenic cotton containing toxin peptide gene was widely planted long ago. However, because cotton is not food, and cotton peach is mainly composed of cellulose, it does not contain toxic peptides. However, when the toxin peptide gene is introduced into food crops, because there is no clear evidence that it is harmless to human body (although the digestive enzymes in human body are of course different from those in insects), countries prohibit the promotion of such transgenic crops.
What is the difference between genetically modified soybeans and non-genetically modified soybeans? Specific point
We can't distinguish genetically modified soybeans from non-genetically modified soybeans in appearance and taste.
Generally speaking, it can only be distinguished from the origin and price.
Domestic supermarkets generally sell non-GM Northeast soybeans with labels.
Generally, the cheaper soybeans on the market are genetically modified soybeans. This is due to the agricultural subsidies of the US imperialists and the monopoly of the four major grain companies under the US imperialists, which makes imported genetically modified soybeans a few hairs cheaper than domestic native soybeans.
It can also be distinguished by the comparative experiment of feeding transgenic soybean mice.
Mice fed with 1 transgenic soybean died 50% within 3 weeks.
2. The testes of mice fed with transgenic soybeans were abnormal, while those fed with ordinary soybeans were normal.
3. Mice fed with genetically modified soybeans are short, while mice fed with ordinary soybeans are normal.
5. The small white gastric cells fed with transgenic soybeans showed unknown proliferation, while the mice fed with ordinary soybeans were normal.
6. Liver cells of mice fed with transgenic soybeans were abnormal, while those fed with ordinary soybeans were normal.
At present, transgenic technology is far from mature.
Long-term consumption of genetically modified foods is harmful to reproductive health, development and immunity.
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