Fang Zhouzi refutes brightening agent of flour and is harmful to the theory Claim the opposition person can not stand weighing

Fang Zhouzi refutes brightening agent of flour and is harmful to the theory Claim the opposition person can not stand weighing
Fang Zhouzi refutes brightening agent of flour and is harmful to the theory Claim the opposition person can not stand weighing
The dispute about brightening agent of flour of our country, for some time. It says to be dispute, hear at media in fact one side fall down to the ground think flour brightening agent do harm rather than good expert opinion that should be forbidden nearly. It is reported, Department of Commerce, national development and reform committee, Quality Testing Bureau, General Administration for Industry and Commerce agree to cancel brightening agent of flour, only Ministry of Public Health objects to. Until recently, Ministry of Public Health gave in at last, to forbidding using brightening agent of flour to solicit the opinion publicly, the announcement claims to have the transition time limit in one year, plan to forbid brightening agent of flour from next December. This decision has received querying numerously, the investigation result on net reveals too, more than 90%% of the persons agree to forbid brightening agent of flour. Food additive has already been devilized for a long time, people have been ladenned with misgivings to its foundation, it looks forward to any food to be " Pure nature " ,If change a kind of food additive and make investigation, estimated finally that similar. But the supervision department is while determining to sanction or forbid a certain food additive, there should be rational scientific basis. If scientific evidence indicates brightening agent of flour really does harm rather than good, should certainly forbid, it is unnecessary after until one year. But does this kind of statement have scientific basis? Rub flour that offer just color turn to be yellow and stickness old and elasticity bad, make millet cake to be neither goodlooking nor delicious with it. Want, store, let it naturally flour to several month several week first when being edible traditionally " And then familiar with " . It is because of containing the micro- one among them carotenoid (mainly xanthophyll)ly that the flour turns to be yellow ,It is oxidized that the oxygen in the air will be carotenoid in the course of storing, the flour will turn white gradually. The oxygen promoted the forming of the gluten too at the same time, let the mouthfeel of millet cake be better. But storing for a long time not only take the place, but also apt to be stale and causing pests, not sanitary. It use by brightening agent and after if you can't can last courses familiars back of flour pharmaceutical, shorten to 2~3 day. Flour brightening agent use most, it becomes targets of public criticism to be crossing and oxidizing benzene formyl. The person defending it at home claims it is well done and improving the function of the mouthfeel after also promoting the flour, but the English specialized materials do not support this kind of view. Cross, it oxidizes the intersection of benzene and function of formyl to be to give flour brighten, need at the same time until familiar pharmaceutical promote behind the flour familiar withing after the other things. Brighten and just let the flour seem goodlooking, use its meaning not to seem big. Problem flour fair and clear to become the high-quality sign of flour, influence the choices to the flour of people, and let the flour white and unrealistic naturally, it is of no use not to can't be said either to use brightening agent, provided that this kind of brightening agent must be unharmful to health. Is it harmful to human body to cross and oxidize benzene formyl? We depend on whether it has acute toxicity at first. Toxicology it weighs acute toxic daily indexes of material to be half fatal dose, consumption that can cause half the death of experimental animal that that is to say. Half high fatal dose, toxicity low, oral administration it oxidizes the intersection of benzene and toxicity of formyl to be extremely low, to big half fatal dose of mouse being each the intersection of weight and 5, (half fatal dose of salt each the intersection of weight and 3.6 grams) . Animal's experiment has not found that oxidizing benzene formyl will have harmful effects to reproduction, development, also no evidence can indicate it is carcinogen. The expert claims to take and oxidize benzene formyl for a long time at home " Will cause chronic poisoning of benzene " ,There is not scientific literature that can support this kind of statement. Cross and oxidize benzene formyl and add after the flour, 91%% of the the above has been turned into benzoic acid. Toxicity of benzoic acid want high a little, half fatal dose each the intersection of weight and 1.7 grams. Benzoic acid is natural to exist in some food (the fruit, milk product, meat) China, itself is a kind of food additive, used in the food in a large amount as preservatives, the consumption is much higher than to cross and oxidize benzene formyl. Contain 200 mg/kg of benzoic acid in the soda, how much is the quantity of drinking a bottle of benzoic acid that soda of 500 ml takes in to use, oxidize the quantity of benzoic acid in the flour that benzene formyl has brightened. The expert objects to using and oxidizing benzene formyl in term of producing benzoic acid, not so convinced as decree people. Have expert oxidize the intersection of benzene and formyl, will destroy carrotene, folic acid, Vitamin E angle of vitamin, object to, use oxidize benzene formyl crossing, even say: "Flour whether the intersection of poverty-stricken area and people absorb little main source of nutrient, but the situation is that the pregnant woman takes the steamed bun with brightening agent now, take folic acid on one side. " In fact these can be oxidized and destroy the content of vitamin lost extremely low or difficultly and utilized by the human body in the flour, did not originally have nutritive value. Even if vitamin keep best the whole the intersection of wheat and flour, carrotene, folic acid, content of vitamin k every 100 flour include 5, 44 micrograms of, 0.7 milligrams only respectively, and the quantity of these vitamins which people need every day is that (probably) respectively 2000, 400 micrograms of, 15 milligrams, can ignore (sour quantity in middle period of flour among them seem much, but natural folic acid is unstable, will lose over half in the course of storing, cooking, left only about 50%% can be absorbed by the human body) . Cross and oxidize benzene formyl and is generally served as brightening agent of food in the world, besides being used in the flour, is also used in the brightening etc. of cheese. Began to forbid brightening agent of flour, but international food code committee (set up with World Health Organization together by Food and Agriculture Organization of the United Nations) in European Union in 1997 Standard still lasting benzene formyls latest last flour brightening agent,there are for 75ppm on limits supreme. American food medicines supervise the administration bureau classifying it as legal flour brightening agent too, do not put a limit on quantity within the range of using rationally. Putting a limit on quantity and is up to 150ppm of Canada. The national standard of China is more conservative instead, limit is 60ppm, in fact generally exceed standard to use, consumption is probably 100ppm, but not exceeded the standard of Canada either. The expert claims, according to our country " food safety law ", so long as can't prove that the health to people is beneficial to oxidize benzene formyl, can't add. Then according to this view, various edible pigment should be forbidden. The pigment just lets the food seem goodlooking, have no benefit to people's health, some pigment has already been known to be harmful to human body. Forbid the intersection of flour and brightening agent, why prohibit, use in the intersection of flour and products Fructus Gardeniae that use yellow and citrus yellow and ginger flavin wait for color pharmaceutical too? So long as the data mentioned above can be got when doing a simple literature search, I wonder why but these domestic experts look but see not, persist in putting forward some and standing the opposition reason to weigh, let people think that object to it in order to oppose. This or involve trade interests, or in order to cater to everybody, or do things creatively. In this era, the some so-called expert opinions appearing on the media are untrustworthy too. Fang Zhou Son


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