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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Identification of Buctopamine and Mebuctopamine, a beta(2) Receptor Agonist and Its Metabolite, in Swine Hair and Feed Additives
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Identification of Buctopamine and Mebuctopamine, a beta(2) Receptor Agonist and Its Metabolite, in Swine Hair and Feed Additives

机译:培养培养和饲料添加剂中β(2)受体激动剂及其代谢物的鉴定鉴定脑电氨酰胺和果白质氨酸。

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摘要

4-[2-(t-Butylamino)-1-hydroxyethyl]phenol (buctopamine, 4), a new beta(2) receptor agonist (beta(2)-agonist), was found to be an adulterant in feed additives for swine in Taiwan, where using beta(2)-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 4 were synthesized with 98.6% and 97.7% purity, respectively, as reference standards for analysis, and both compounds were more hydrophilic than ractopamine and clenbuterol. In a preliminary pharmacological evaluation, compounds 2 and 4 exhibited moderate human beta(2) receptor binding affinity and did not show significant affinities for the human alpha l, alpha(2) and beta(3) receptors. After addition of compounds 2-4 into the beta(2)-agonist library, a multiresidue analysis of 26 beta(2)-agonists by using triple quadrupole LC/MS/MS for routine screening conducted by regulatory authorities was established, in which the common limits of quantification for the 26 beta(2)-firagonists in swine feed and hair are 10 and 25 ng/g, respectively. In addition, the illegal use of buctopamine (4) has been effectively prevented. The results of this study are also useful for controlling the illegal use of new beta(2)-agonists in food-production animals.
机译:发现4- [2-(叔丁基氨基)-1-羟乙基]苯酚(Buctopamine,4),一种新的β(2)受体激动剂(β(2) - aiganist),是猪的饲料添加剂中的掺杂剂在台湾,禁止使用Beta(2)中的食品生产动物中的。在猪染发样品中检测到杆状病胺及其代谢物,4- [2-(叔丁基氨基)-1-羟乙基] -2-甲氧基酚(Mebuctopamine,2)。作为参考标准分析,分别用98.6%和97.7%合成了正宗的化合物2和4,并且两种化合物比RactoPamine和Clenbuterol更亲水。在初步药理学评价中,化合物2和4表现出中等人β(2)受体结合亲和力,并未显示出人α1,α(2)和β(3)受体的显着亲和力。在将化合物2-4加入到β(2)中,通过使用三重四极杆LC / MS / MS / MS进行监管机构进行的常规筛查的多人途径分析,其中26β(2) - 猪饲料和毛发中的流动率的常见量化分别为10和25ng / g。此外,已有效地防止了对生物水多胺(4)的非法使用。该研究的结果也可用于控制非法使用新的β(2)的食品生产动物。

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