Extraction of β- agonists from Bovine Liver Tissue
Applications | | Applied SeparationsInstrumentation
The detection and quantification of β-agonists in animal tissues is crucial for food safety and compliance with regulatory limits. Supercritical fluid extraction offers a solvent-free alternative to traditional methods, reducing hazardous waste and analysis time while maintaining sensitivity and accuracy.
This study aimed to develop and validate a supercritical carbon dioxide extraction method for clenbuterol from bovine liver tissues. The protocol integrates enzyme immunoassay for sensitive determination at or below the established maximum residue limit of 0.5 ng/g.
The sample preparation involved homogenization of 1.5 g fresh liver with adsorbent matrix and packing into a 24 mL extraction vessel with wool plugs. Supercritical CO2 extraction was performed at 690 bar and 100°C with a 2 L/min flow rate for 40 minutes. Post extraction, analytes were captured on a neutral alumina SPE column and eluted with methanol–water.
The optimized SFE method demonstrated quantitative recovery of clenbuterol down to 0.5 ng/g without requiring additional cleanup. The enzyme immunoassay provided accurate quantification, and the procedure significantly reduced solvent usage and analysis time compared to liquid extraction techniques.
Advances in supercritical fluid technology may lead to automated high-throughput workflows and integration with mass spectrometry for multiplexed residue screening. Further development of selective adsorbents and online cleanup strategies will enhance method specificity and robustness.
The presented SFE-EIA method for clenbuterol in bovine liver offers a rapid, eco-friendly, and sensitive alternative to traditional solvent-based protocols, meeting regulatory requirements and supporting food safety monitoring.
M J O’Keeffe; M O’Keeffe; J D Glennon; A R Lightfield; R J Maxwell. Supercritical fluid extraction of clenbuterol from bovine liver tissue. The Analyst, 123 (1998) 2711-2714.
Sample Preparation
IndustriesClinical Research
ManufacturerSummary
Significance of the Topic
The detection and quantification of β-agonists in animal tissues is crucial for food safety and compliance with regulatory limits. Supercritical fluid extraction offers a solvent-free alternative to traditional methods, reducing hazardous waste and analysis time while maintaining sensitivity and accuracy.
Objectives and Study Overview
This study aimed to develop and validate a supercritical carbon dioxide extraction method for clenbuterol from bovine liver tissues. The protocol integrates enzyme immunoassay for sensitive determination at or below the established maximum residue limit of 0.5 ng/g.
Methodology and Instrumentation
The sample preparation involved homogenization of 1.5 g fresh liver with adsorbent matrix and packing into a 24 mL extraction vessel with wool plugs. Supercritical CO2 extraction was performed at 690 bar and 100°C with a 2 L/min flow rate for 40 minutes. Post extraction, analytes were captured on a neutral alumina SPE column and eluted with methanol–water.
Used Instrumentation
- Applied Separations Spe-ed SFE-2 or Helix Supercritical Extraction System
- Spe-ed Matrix and Spe-ed Wool adsorbents
- Neutral alumina SPE column
- CO2 supply (SFE grade)
Main Results and Discussion
The optimized SFE method demonstrated quantitative recovery of clenbuterol down to 0.5 ng/g without requiring additional cleanup. The enzyme immunoassay provided accurate quantification, and the procedure significantly reduced solvent usage and analysis time compared to liquid extraction techniques.
Benefits and Practical Applications
- Solvent-free extraction minimizes hazardous waste.
- Shorter processing times increase laboratory throughput.
- Adequate sensitivity for regulatory compliance and quality control.
- Applicability to routine screening of veterinary drug residues in food safety laboratories.
Future Trends and Potential Applications
Advances in supercritical fluid technology may lead to automated high-throughput workflows and integration with mass spectrometry for multiplexed residue screening. Further development of selective adsorbents and online cleanup strategies will enhance method specificity and robustness.
Conclusion
The presented SFE-EIA method for clenbuterol in bovine liver offers a rapid, eco-friendly, and sensitive alternative to traditional solvent-based protocols, meeting regulatory requirements and supporting food safety monitoring.
References
M J O’Keeffe; M O’Keeffe; J D Glennon; A R Lightfield; R J Maxwell. Supercritical fluid extraction of clenbuterol from bovine liver tissue. The Analyst, 123 (1998) 2711-2714.
Content was automatically generated from an orignal PDF document using AI and may contain inaccuracies.
Similar PDF
Extraction of Drugs and other Chemical Residues from Tissues using SPE Trapping Techniques
||Applications
SCF 520 Extraction of Drugs and other Chemical Residues from Tissues using SPE Trapping Techniques Isolation of Drug Residue from Tissue Matrices by SFE There have been some problems identified with using typical SFE methods to isolate drug residue from…
Key words
sfe, sfespe, speliver, liverchicken, chickentissues, tissuesresidues, residuestrace, tracelevel, leveldrug, drugsleeve, sleeveproblems, problemsteflon, teflonsteroids, steroidsextraction, extractionnitrobenzamides
Determination of Steroids in Animal Tissues by Supercritical Fluid Extraction and Inline Trapping
||Applications
SCF 535 Determination of Steroids in Animal Tissues by Supercritical Fluid Extraction and Inline Trapping Introduction The use of anabolic steroids in food producing animals is illegal among countries in the European Union. In order to enforce regulations, laboratories responsible…
Key words
sfe, sfesteroids, steroidssupercritical, supercriticalextraction, extractiontissue, tissuechlorotestosterone, chlorotestosteronemethylboldenone, methylboldenoneanimal, animalnorethandrolone, norethandrolonenortestosterone, nortestosteroneethynylestradiol, ethynylestradiolnorgestrel, norgestrelevaporate, evaporatedryness, drynessdioxide
SCF 518 Extraction of Rosehip Seed Oil Using Supercritical Fluids Introduction Rosehip oil is a valuable natural product for the cosmetic industry, yet conventional methods of extraction are often time consuming and rely heavily on the use of chemical solvents.…
Key words
rosehip, rosehipoil, oilsupercritical, supercriticalextraction, extractiondioxide, dioxideseeds, seedssfe, sfepredried, predriedcarbon, carbonwool, woolpreweighed, preweighedscf, scfalternative, alternativecollection, collectionspe
SCF 519 Extraction of Lycopenes from Tomato By-Products Using Supercritical Fluids Introduction Tomatoes contain a high concentration of carotenoids and lycopenes, significant amounts of which are found in the skins of the tomatoes. Lycopenes are valued for their important antioxidant…
Key words
lycopenes, lycopenesextraction, extractionsupercritical, supercriticaltomatoes, tomatoessoxhlet, soxhletdioxide, dioxidesfe, sfetomato, tomatocheesecloth, cheeseclothsolvent, solventcarbon, carbonplug, plugskins, skinspreweighed, preweighedwelding
