Zhejiang: how "Clenbuterol" appears

Introduction: Jan 9 Zhejiang Daily News: the project of "determination of clenbuterol (clenbuterol) in animal feed and biomaterials by GC", which is in charge of the disease control center of Zhejiang Province, recently passed the provincial achievement appraisal in Hangzhou According to the appraisal committee, the project has successfully established an effective analytical method for the current situation that it is difficult to determine clenbuterol residues in animal feed and biomaterials in China Compared with the current methods, the detection method of this project has the advantages of stability, reliability, simple operation, less impurity interference and high sensitivity, which is conducive to the popularization and application, and has great social and economic significance Since June 1999, with the assistance of the animal husbandry administration of the Provincial Department of agriculture and the feed Research Institute of Zhejiang University, the provincial CDC has started the research on the determination of clenbuterol in animal feed and biomaterials by GC Wu Pinggu, the physical and chemical laboratory in charge of this subject, has overcome the difficulties in the determination of clenbuterol residues in animal feed and biomaterials in China The qualitative and quantitative analysis of clenbuterol residues is carried out by GC, and a better GC method is obtained Clenbuterol, commonly known as "Clenbuterol", is a white crystalline powder, tasteless and slightly bitter It belongs to β - adrenergic stimulant It is a drug used to treat asthma In the 1980s, a large number of studies at home and abroad showed that clenbuterol added to feed had a nutritional redistribution effect on animals, which could promote the growth of muscle tissue, reduce the fat content and improve the lean meat rate Clenbuterol is added 5 to 10 times of the treatment amount in the feed, and it has a long use period (30 days of continuous medication), which will form residues in animal tissues, among which the residues in liver, lung, eyeball and kidney are higher The chemical properties of clenbuterol are stable, which can not be destroyed by general heating method 15 to 20 minutes after a person or animal takes it It will make people suffer from tremor, panic, headache, nausea, vomiting and other symptoms, which is more harmful to patients with hypertension, heart disease, hyperthyroidism, glaucoma, diabetes and prostate hypertrophy In 1992, more than 40 people were poisoned by clenbuterol in Spain for the first time The EU first issued a regulation banning the use of β - adrenergic stimulants as growth promoters On April 5, 2000, China's Ministry of agriculture and the State Drug Administration jointly issued a document forbidding the illegal production, sale and use of clenbuterol However, driven by economic interests, some professional breeders and feed processing enterprises use the additives containing clenbuterol as "secret weapons", and some even increase the amount of clenbuterol, resulting in pig poisoning According to the investigation of the Ministry of agriculture of the people's Republic of China, the illegal use of animal feed mixed with clenbuterol is mainly concentrated in coastal and central areas with developed aquaculture In recent years, there have been many cases of clenbuterol poisoning in Zhejiang and surrounding provinces, and the illegal use of clenbuterol is quite serious (author:) share to feed Weibo share to: