
According to Shuanghui International Chairman and Shuanghui Group Chairman Wan Long, once Shuanghui has successfully acquired Smithfield, the company will introduce the latter's high-margin meat products into China. However, the U.S. is one of the few countries in the world where Ractopamine can be legally used, and the U.S. Food and Drug Administration (FDA) as early as 1999 has allowed the amount of residual clenbuterol in pork to be as high as 0.05 ppm. It is five times the upper limit set by the Codex Alimentarius Commission.
In this regard, Yuan Song, chief analyst of Zihua Data Livestock Industry, told the “First Financial Daily†that there is currently no standard for lean meat in the world. The attitudes of different countries are not consistent with whether they can use lean meat in feed. China, Russia, and the European Union have banned the addition of lean meat to feed, while the United States and Canada have only specified residues and have not banned the use of lean meat.
Qian Hui, an animal science doctor at Huazhong Agricultural University, also analyzed the reporter: “In fact, China and the United States have not a concept of “lean meat essence.†“Clenbuterol†is a kind of medicine, not a kind of product, but it has been used much before in China. Clenbuterol Hydrochloride is a very serious hazard and must not be used, but the United States mainly uses ractopamine.At that time, in order to block the mouth, China simply restricted all use. On the other hand, American companies use Laker. When dopamine is used, the withdrawal period is relatively good. Their study stated that if they followed their procedures, they would not be harmful to the human body."
"If the pork of American companies wants to pass China's standards, they can only reopen a business and draw a piece of culture specifically, otherwise it is impossible to meet the standard." Yuan Song said, "But in this case, the cost of the company will rise." Because clenbuterol can actually reduce the cost of production. Taiwan had some time ago to debate whether imported pork should be released from the standard of "lean meat." Later, Taiwan relaxed the standard and allowed use, but it is limited."
As early as February 2002, the ministries of the Ministry of Agriculture and other three ministries classified lean meat as a banned medicine and banned the addition of "lean meat essence" to feed.
In July 2007, China had stopped importing pork from the United States because it contained lean meat. The data of the AQSIQ website also showed that between January 2011 and March 2012, 33 batches were detected in China. Nearly one thousand tons of "pork pork" contains "rice dopamine", which accounted for nearly half of the pork imported from the United States.
Plant extraction process
1. Select plants/herbs. No more than ancient prescriptions, prescriptions, folk herbs to find. At present, common and uncommon herbs have been studied. At present, it is mostly to increase the amount of medicinal materials to extract and separate components with low content, or to find medicinal plants that have never been studied from miao medicine, Tibetan medicine, Mongolian medicine, Africa, Latin America and other places.
2. The extraction. Solvent petroleum ether, n-hexane, cyclohexane, benzene, chloroform, ethyl acetate, n-butanol, acetone, ethanol, methanol, water (low polarity → high polarity). Daily medicine decoction effective, water and ethanol and other solvents with large polarity, such as artemisinin boiling ineffective extraction with petroleum ether and other solvents with small polarity. Common medicinal materials water/alcohol/ether to go through, separation and identification of more compounds.
3. The separation. This is the most important work. In the solution extracted from the second step, there are dozens of compounds, usually by column chromatography, which is often referred to as the column flushing. It's a lot of work, it's boring, it's low tech. A master's student might do this every day for two years. The column for separating compounds, as shown below, is as large as 2 meters high and as small as 10 centimeters. Change the solvent condition of mobile phase, change the material of column, different conditions and different separation principles of column repeatedly punching, can be separated from the monomer compound.
Herbal Medicine,Ginger Extract Powder,Hawthorn Berry Extract,Lycium Berry Fruit Extract
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