Effects of 105 traditional Chinese medicines on the detection ofβ-agonists in medicine extracts and swine urine based on colloidal gold immunochromatographic assay  

作　　者：WANG Zi-lin FENG Ke-ying GE Xiu-feng MAI Jia-cheng WANG Han-chuan LIU Wen-zi ZHANG Jia-hui SHEN Xiang-guang 

机构地区：[1]Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation,South China Agricultural University,Guangzhou 510642,P.R.China [2]Animal and Poultry Products Quality Control,Inspection and Testing Center,Ministry of Agriculture and Rural Affairs,Guangzhou 510642,P.R.China

出　　处：《Journal of Integrative Agriculture》2021年第6期1626-1635,共10页农业科学学报（英文版）

基　　金：the Guangdong Public Welfare Research and Capacity Building Project,China(2015A020209130)。

摘　　要：Colloidal gold immunochromatographic assay(CGIA)is commonly used for the on-site detection ofβ-agonists that are sometimes used illegally as feed additives in swine diets.However,few studies have evaluated the causes of false-positive results that sometimes occur when applying CGIA in agricultural settings.In this study,we investigated if this false-positive phenomenon is related to the addition of certain traditional Chinese medicines(TCMs)to swine feed.We established and verified an extraction method for TCMs,and then applied CGIA to detectβ-agonists in the extracts of 105 TCMs and in the urine of swine dosed with TCMs,respectively.Liquid chromatography-tandem mass spectrometry was used to validate the results of the urine samples tested positive forβ-agonists using CGIA.The results were also verified using TCMs and colloidal gold test strips produced by different manufacturers.The extracts of Citri Reticulatae Pericarpium Viride,Citri Reticulatae Pericarpium,Magnoliae Officinalis Cortex,Chaenomelis Fructus,and Rhodiolae Crenulatae Radix Et Rhizoma were tested positive forβ-agonists.Meanwhile,the addition of Citri Reticulatae Pericarpium Viride and Citri Reticulatae Pericarpium to swine feed resulted in false-positive results forβ-agonists in swine urine.The results provide a new way to explain false-positive CGIA results and provide valuable information for livestock feeding programs.

关 键 词：colloidal gold immunochromatographic assay false positive traditional Chinese medicine Β-AGONISTS swine urine 

分 类 号：S859.84[农业科学—临床兽医学]