Identification of Buctopamine and Mebuctopamine, a β<sub>2</sub> Receptor Agonist and Its Metabolite, in Swine Hair and Feed Additives
作者:Ying-Heng Chen、Chia-Ying Yang、Chih Wen Cheng、Yi-Ying Lin、Su Lien Kuo、Ling-Wei Hsin
DOI:10.1021/acs.jafc.7b00130
日期:2017.5.17
4-[2-(t-Butylamino)-1-hydroxyethyl]phenol (buctopamine, 4), a new β2 receptor agonist (β2-agonist), was found to be an adulterant in feed additives for swine in Taiwan, where using β2-agonists in food-production animals is prohibited. Buctopamine and its metabolite, 4-[2-(t-butylamino)-1-hydroxyethyl]-2-methoxyphenol (mebuctopamine, 2), were detected in swine hair specimens. Authentic compounds 2 and
一种新的β2受体激动剂(β2-激动剂)4- [2-(叔丁基氨基)-1-羟乙基]苯酚(丁甲胺,4)在台湾用作猪饲料添加剂时被掺假。禁止在食品生产动物中使用激动剂。在猪毛标本中检出了布克多巴胺及其代谢物4- [2-(叔丁基氨基)-1-羟乙基] -2-甲氧基苯酚(丁克多巴胺,2)。合成的真实化合物2和4分别以98.6%和97.7%的纯度作为分析的参考标准,并且两种化合物的亲水性都比ractopamine和clenbuterol高。在初步的药理评估中,化合物2和4表现出中等的人β2受体结合亲和力,并且对人α1,α2,β1和β3受体没有显着亲和力。将化合物2-4添加到β2-激动剂库后,建立了使用监管机构进行的常规三联四极杆LC / MS / MS对26种β2受体激动剂进行多残留分析的方法,其中猪饲料和头发中26种β2受体激动剂的常见定量限为10和25 ng / g。另外,已经有效地防止了非法使用布克