1
|
Ar-sanork K, Karuwan C, Surapanich N, Wilairat P, Nacapricha D, Chaisuwan P. Mixed mode monolithic sorbent in pipette tip for extraction of ractopamine and clenbuterol prior to analysis by HPLC-UV and UHPLC-Q ExactiveTM Plus Orbitrap MS. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-021-00275-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractThis work developed a fast and simple method for the quantification of two important β-agonists, ractopamine (RAC) and clenbuterol (CLEN) in animal urines. The method was based on micro-extraction by a mixed mode monolithic material and analysis by HPLC-UV and UHPLC-Q ExactiveTM Plus Orbitrap mass spectrometer. A mixed functional monolith with nonpolar ester-based structure containing polar carboxylic groups was thermally synthesized in situ in the pipette tips. The material combines both hydrophobic and ionic interactions. Parameters including conditions and composition of reagents for the in-pipette tip monolith synthesis, as well as the extraction process, were investigated and optimized. The procedure for extraction is 800 μL washing solvent of 10:90 (v/v) ACN:water and 150 μL eluting solvent of 30:70 (v/v) ACN:200 mM acetate buffer pH 4.0. Extraction efficiencies of 92% and 100% for RAC and CLEN, respectively, were achieved within 5 min with total organic solvent consumption of 395 μL. The extracts of spiked cattle and swine urines were analyzed by HPLC-UV and UHPLC-Q ExactiveTM Plus Orbitrap mass spectrometer. Good recovery with acceptable precision was observed. The mass spectrometry data confirmed efficient matrix removal by the synthesized extraction sorbent allowing routine analysis by the HPLC-UV method.
Collapse
|
2
|
Challis JK, Sura S, Cantin J, Curtis AW, Shade KM, McAllister TA, Jones PD, Giesy JP, Larney FJ. Ractopamine and Other Growth-Promoting Compounds in Beef Cattle Operations: Fate and Transport in Feedlot Pens and Adjacent Environments. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:1730-1739. [PMID: 33450151 DOI: 10.1021/acs.est.0c06450] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The current study represents a comprehensive investigation of the occurrence and fates of trenbolone acetate (TBA) and metabolites 17α-trenbolone (17α-TBOH), 17β-TBOH, and trendione (TBO); melengesterol acetate (MGA); and the less commonly studied β-andrenergic agonist ractopamine (RAC) in two 8 month cattle feeding trials and simulated rainfall runoff experiments. Cattle were administered TBA, MGA, or RAC, and their residues were measured in fresh feces, pen floor material, and simulated rainfall runoff from pen floor surfaces and manure-amended pasture. Concentrations of RAC ranged from 3600 ng g-1, dry weight (dw), in pen floor to 58 000 ng g-1 in fresh feces and were, on average, observed at 3-4 orders of magnitude greater than those of TBA and MGA. RAC persisted in pen floors (manure t1/2 = 18-49 days), and contamination of adjacent sites was observed, likely via transport of windblown particulates. Concentrations in runoff water from pen floors extrapolated to larger-scale commercial feedlots revealed that a single rainfall event could result in mobilization of gram quantities of RAC. This is the first report of RAC occurrence and fate in cattle feedlot environments, and will help understand the risks posed by this chemical and inform appropriate manure-management practices.
Collapse
Affiliation(s)
- J K Challis
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - S Sura
- Agriculture and Agri-Food Canada (AAFC), Morden, Manitoba R6M 1Y5, Canada
| | - J Cantin
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada
- Agriculture and Agri-Food Canada (AAFC), Lethbridge, Alberta T1J 4B1, Canada
| | - A W Curtis
- Agriculture and Agri-Food Canada (AAFC), Lethbridge, Alberta T1J 4B1, Canada
| | - K M Shade
- Agriculture and Agri-Food Canada (AAFC), Lethbridge, Alberta T1J 4B1, Canada
| | - T A McAllister
- Agriculture and Agri-Food Canada (AAFC), Lethbridge, Alberta T1J 4B1, Canada
| | - P D Jones
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - J P Giesy
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada
- Department of Environmental Science, Baylor University, Waco, Texas 76798, United States
| | - F J Larney
- Agriculture and Agri-Food Canada (AAFC), Lethbridge, Alberta T1J 4B1, Canada
| |
Collapse
|
3
|
Davis HE, Badger CD, Brophy P, Geornaras I, Burnett TJ, Scanga J, Belk K, Prenni J. Quantification of ractopamine residues on and in beef digestive tract tissues. J Anim Sci 2020; 97:4193-4198. [PMID: 31410462 DOI: 10.1093/jas/skz263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 08/05/2019] [Indexed: 11/14/2022] Open
Abstract
Ractopamine hydrochloride is a commercial beta-adrenergic agonist commonly used as a dietary supplement in cattle production for improved feed efficiency and growth promotion. Currently, regulatory target tissues (as approved in the New Animal Drug Application with Food and Drug Administration) for ractopamine residue testing are muscle and liver. However, other tissues have recently been subjected to testing in some export markets for U.S. beef, a clear disregard for scientific maximum residue limits associated with specific tissues. The overall goal of this study was to develop and validate an LC-MS/MS assay to determine whether detectable and quantifiable levels of ractopamine in digestive tract-derived edible offal items (i.e., abomasum, omasum, small intestine, and reticulum) of cattle resulted from tissue residues or residual ingesta contamination of exposed surfaces of tissues (rinsates). Tissue samples and corresponding rinsates from 10 animals were analyzed for parent and total ractopamine (tissue samples only). The lower limit of quantitation was between 0.03 and 0.66 ppb depending on the tissue type, and all tissue and rinsate samples tested had quantifiable concentrations of ractopamine. The highest concentrations of tissue-specific ractopamine metabolism (represented by higher total vs. parent ractopamine levels) were observed in liver and small intestine. Contamination from residual ingesta (represented by detectable ractopamine in rinsate samples) was only detected in small intestine, with a measured mean concentration of 19.72 ppb (±12.24 ppb). Taken together, these results underscore the importance of the production process and suggest that improvements may be needed to reduce the likelihood of contamination from residual ractopamine in digestive tract-derived edible offal tissues for market.
Collapse
Affiliation(s)
- Haley E Davis
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | - Crystal-Dawn Badger
- Proteomics and Metabolomics Facility, Colorado State University, Fort Collins, CO
| | | | - Ifigenia Geornaras
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | | | | | - Keith Belk
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | - Jessica Prenni
- Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, CO
| |
Collapse
|
4
|
Zhang K, Tang C, Meng Q, Du W, Bo T, Zhao Q, Liang X, Liu S, Zhang Z, Zhang J. Residues of Salbutamol and Identification of Its Metabolites in Beef Cattle. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:2867-2875. [PMID: 28322048 DOI: 10.1021/acs.jafc.7b00189] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Salbutamol, a selective β2-agonist, endangers the safety of animal products because of its illegal use in food animals. In this work, residues of salbutamol and its metabolites were investigated to select appropriate targets and marker residues for monitoring the illegal use of salbutamol. Ten metabolites of salbutamol were identified from plasma, urine, liver, and kidney samples; of these, six were newly identified. There were significant differences (P < 0.01) between the parent (nonconjugated) and total (conjugated + nonconjugated) salbutamol concentrations in plasma, urine, liver, and kidney tissues. Salbutamol residues in urine were relatively higher than those in plasma and other internal tissues during the dosing period and were rapidly eliminated from plasma, heart, spleen, and kidney tissues during the withdrawal time. Total salbutamol was identified as more preferable than parent salbutamol as a marker residue, and urine and eye tissues were found to be more suitable as targets for preslaughter and postslaughter monitoring of the illegal use of salbutamol in beef cattle.
Collapse
Affiliation(s)
- Kai Zhang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture , Beijing 100193, China
| | - Chaohua Tang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture , Beijing 100193, China
| | - Qingshi Meng
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture , Beijing 100193, China
| | - Wei Du
- Agilent Technologies (China) Co., Ltd. , Beijing 100102, China
| | - Tao Bo
- Agilent Technologies (China) Co., Ltd. , Beijing 100102, China
| | - Qingyu Zhao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture , Beijing 100193, China
| | - Xiaowei Liang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture , Beijing 100193, China
| | - Shengsheng Liu
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture , Beijing 100193, China
| | - Zhixu Zhang
- Agilent Technologies (China) Co., Ltd. , Beijing 100102, China
| | - Junmin Zhang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture , Beijing 100193, China
| |
Collapse
|