2012年5月30日星期三

Let to turn a gene technique more a safety

The soybean on the market big part was to turn gene soybean, turned to go into a certain gene, let the soybean have the ability of anti- herbicide or anti- insect pest currently, so easy to in the field management, decrease agrochemical use, lower production cost, have advantage to the environmental protection and the farmer, then have no to the consumer obvious of advantage.This type of farm crop that turn gene are sometimes called generation to turn gene farm crop.American Department of Agriculture granted recently is developed by the Du Pont company of a kind of turn gene soybean the new product grow of plant.This kind of turns gene soybean oil the sour content is higher, the oil that compares any existing soybean species sour contents are all high, the oil that squeezes is settled.Usually, people want to use the chemistry method carry on processing to the edible oil and produce anti- type fatty acids through a hydrogenation.The anti- type fatty acids is more stable, easy to storage, but to health harmful.This kind of lately turns gene soybean the oil need not carry on chemistry again to process due to having been more stable,cheap sunglasses don't contain anti- type fatty acids, and another to health harmful fatty acids-the content of saturated fatty acids also lower 20%.Was like to improve the nourishment composition of food like this, beneficial to the consumer's health, can make the consumer directly experience personally the farm crop of the advantage of turning the gene, be called the next generation to turn gene farm crop.Anti- herbicide or anti- insect pest turn gene soybean to come out with"addition" development:Turn the new gene of going into an outside source.Gao You Suan turns gene soybean to then come out with"subtraction" development of, let to have something to do with synthesizing of fatty acids in the soybean seed a gene have no effect and be called the expression of letting the gene"silent".More someone declares, "the United States suddenly releases the next generation to turn a new technique of gene" actually admits "generation's turning a gene technique has been dated and failure" to the whole world with this.Actually, gene silent technique be not what new generation or the next generation turn a gene technique.The approval becomes available in the market in 1994 of the first turn a gene food-turn gene tomato be use a gene silent technique development.Before, the farmer wanted to take advantage o tomato didn't°yet mature, a fruit is still a green of time adopt to pick.Have no mature tomato be delivered to the back of the store, spray ethylene to urge them familiar, become red to put again to go out to sell.This kind of artificial urges the tomato that the familiar tomato doesn't have nature maturity to eat well.Why don't wait tomato mature, redden again pick?Because after tomato is mature, the skin also is getting softer, transports to easily break in the process.Can you make the mature tomato skin constantly soft?The skin of the tomato becomes soft, because of having a kind of Mao that is called to gather more half lactose sour Mao of Quan to give° the gum quality in the cell wall to resolve.The biologists code the gene gram Long of this kind of Mao to come out, measuresed its sequence.Then synthesize an and its contrary"anti- righteousness gene".Turn"anti- righteousness gene" into to go to tomato cell, meeting interference originally the activity of gene, let it have no way any further to synthesize to gather more half lactose sour Mao of Quan, the gum quality in the cell wall can't be resolved, tomato even if Be getting more mature, the skin can't becomes soft, either.We can wait until it naturally mature pick again, need not worry the good luck doesn't lose.Thus, naturally mature of turn gene tomato to eat will urge familiar common tomato than the artificial delicious, and can deposit very for a long time also can't bad.In order to turning the "anti- righteousness gene" interference going into to gather half lactose Quan the gene of the sour Mao, can't interference other genes, therefore the nourishment composition that turns gene tomato has never taken place to change.The papaya on the market big part is the papaya that is all virussafe to turn gene currently, they also used gene while developing silent technique.Adopting "subtraction" to want more healthy than"addition"'s risk is much lower.People mainly worry of BE, turn for farm crop to go into new gene, the new protein of production will can't poisonous side effect or arouse allergy.And the adoption gene silent technique don't let a certain gene express, or adopt gene to pick and get rid of the technique clean the gene that don't want, can also change vegetative sex-like in shape.Sometimes, strengthen or lower have already had gene of the expression can also attain us of request.These way of doings have never led to go into new gene, therefore also need not be worried that the new protein will have a problem.In addition, the method also being different from lets to turn gene to become more safe.For example, if want to lead to go into new gene, can turn to go into other edible genes used to a thing as far as possible, or let to turn go into of genes the organizations expression that isn't doing eat come out, need not be worried that the new protein of its production can eat too much.The anti- insect pest that acquired a safe certificate lately turns gene paddy rice is that let anti- insect pest the gene isn't doing eat of the part expresses, then don't express in the albumen.So evening if you resisting the safety of the outcome of insect pest gene to contain worry in uncertainty,can trusting isn't edible, because does contain the outcome in the rice.Adopt these technique developments to turn gene farm crop the new product grow, don't mean to otherly turn gene farm crop to are insecure of, just safe risk is just much lower.An economics professor in domestic says that is "the gene inserts" or"the gene is silent" no matter, "all of results aren't foreseeable".I don't know why this economics professor from think to understand "real life science" more than the biologist.Have very clear understand towards wanting to insert or the function of silent gene, biologists all, turn the result of gene usually is can with the foreknowledge.And, in order not to appear the result that didn't anticipate, also need to pass bio-chemical experiment and animal to test to examine its safety, adoption of is the strictest food safety examination standard.If also want to doubt to these result that experiment,Mens Police Sunglasses that is doubting the whole food safety examination system, not turns a gene technique.Any foods all have the safe risk of different degree, any techniques all probably produce not foreseeable result.Turn a gene food up to the present haven't discovered can be confirmed of to an example of healthy disadvantage, on the contrary miscellaneous handed over a technique to once cultivate a species for healthy disadvantage, become available in the market because of having not yet examination, afterwards discover a problem again recall.Why don't know those objection that turning the traditional farm crop that interfere with of personage's strict management in doing not be subjected to equal and of gene is on the contrary so rest assured?


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