milk and dairy products with high nutritional value, as China continues to improve socio-economic level, dairy consumption has increased annually, "a glass of milk strong a nation "slogan, and has become the driving force behind many household consumption of dairy products. However some of dairy products are often illegal additives, to the consumer's health and security.
It is understood that add illegal additives in dairy products, and its purpose: in the milk with water, increasing the proportion of milk protein content and other indicators to the normal range; adding low-cost materials, making improper interest; to prevent the deterioration of milk, or cover up the bad smell of milk.
present, illegal additives in dairy products can be categorized as the following six categories:
1. Electrolytes
common are the neutral salt (such as salt, sodium nitrate, Glauber's salt), weak acid weak alkali salts (such as ammonium carbonate), alkali weak acid salts (eg sodium carbonate, sodium bicarbonate) and other salts (such as alum, lime). Alkali milk only after the bad taste, but also the growth of spoilage bacteria will also have some harmful substances, but also undermine the vitamins in milk, on the drinkers health.
2. Non-electrolyte crystal class
these substances is not ionize in water to form true solution of small molecules, such as urea, sugar and so on.
3. Colloidal substances
macromolecules are generally liquid, colloidal solution, emulsion and other forms exist, such as rice juice (rice soup), milk and so on.
4. Preservatives, antibiotics
means an antibacterial or bactericidal substances, such as various preservatives (formaldehyde, boric acid, salicylic acid, hydrogen peroxide, etc.), pesticides (such as dichlorvos, etc.), antibiotics (such as penicillin, etc.). Preservatives, pesticides mixed with less general, because it will cause poisoning, serious harm.
incorporation of antibiotics in two ways: First, directly into milk, the second is the residual after the use of antibiotics in cow milk. According to regulations, use of antibiotics in dairy cows generally have 5 to 7 days of the withdrawal period, during which the milk production is to waste, but the individual of such poor producers to shift sales to the dairy producers of milk mixed with distribution channels. At present, many bacteria have a resistance to antibiotics, mastitis penicillin treatment in the past, usually with hundreds of thousands of units of time, and now has increased to millions of dosage units, such a large dosage can cause antibiotic residues in milk . Such milk drink too much, when a disease epidemic, will be among a wide range of resistance due to lack of effective drugs.
5. Impurities
and milk showed that the state of each other insoluble substances, such as white clay, white shoes, powder, washing powder, etc., more serious adverse pour in milk producers into cow urine, human urine and so on. These adulterants, the light so that people get proper nutrition, economic losses, severe harm people's health and even cause food poisoning, causing serious death.
6. High-nitrogen compounds, with high content of fatty substances
such as melamine, protein powder, leather powder, fat powder. Pink leather case, which is non-edible protein substances, the main component of leather hydrolyzed protein, these substances in the body can not break down, but also slow the accumulation of lead poisoning, harmful to the human body and even cause death.
Strategies
dispersed consumption, to avoid harm
the face of such a wide variety of illegal additives, dairy products consumers buy, the merely rely on the senses to identify , very difficult.
However, milk and dairy products to resolve the problems, the state has promulgated and implemented the "Safety of Agricultural Products Act" and "Food Safety Law," Department of Agriculture's dairy industry has also set up a special office, strengthening supervision of illegal additives into the key aspects of milk and dairy products - fresh milk production
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the same time, add the illegal substances in dairy products in general are individual phenomena, but also in different regions
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milk and dairy products to resolve the problems
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