Analytical Techniques for Opium Alkaloids in Food and Biological Samples
Summary
Analytical methods for detecting opium alkaloids such as morphine, codeine, thebaine, papaverine and noscapine play a critical role in food safety, public health and forensic toxicology. These compounds occur naturally in Papaver somniferum L. seeds and may contaminate culinary products, teas, bakery items and biological fluids. Rigorous quantification requires effective sample preparation to isolate trace alkaloids from complex matrices, typically involving solid-liquid extraction, ultrasound-assisted extraction or microextraction techniques. Clean-up steps employ solid-phase extraction (conventional or magnetic) to remove interfering substances, while chromatographic separation is achieved using liquid or gas phases. Liquid chromatography coupled with tandem mass spectrometry is favoured for its sensitivity and selectivity, whereas gas chromatography–mass spectrometry remains valuable for volatile analogues. Recent advancements focus on miniaturisation, greener solvents and novel sorbents to enhance throughput and reduce environmental impact. Method validation parameters—limits of detection and quantification, linearity, recovery and precision—ensure reliability across diverse sample types. Ultimately, standardised and robust approaches support regulatory compliance, enable screening in clinical and workplace settings, and safeguard the food supply against economically motivated adulteration or accidental contamination.
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Analytical Techniques for Opium Alkaloids in Food and Biological Samples publication trend
The graph below shows the total number of articles in analytical techniques for opium alkaloids in food and biological samples across all publications each year (not limited to Nature Index journals).
Technical terms
Solid-phase extraction (SPE): A sample-clean-up technique that passes a liquid sample through a sorbent to retain target analytes and remove interferences.
Liquid chromatography-tandem mass spectrometry (LC-MS/MS): A method combining high-performance liquid chromatography separation with sequential mass spectrometric detection for sensitive, selective quantification.
Gas chromatography–mass spectrometry (GC-MS): An analytical technique in which volatile compounds are separated by gas chromatography and identified or quantified by mass spectrometry.
Ultrasound-assisted extraction (UAE): A technique using ultrasonic waves to enhance solvent penetration and accelerate the release of analytes from solid matrices.
Magnetic solid-phase extraction (MSPE): A variation of SPE using magnetic sorbent particles that can be separated from the sample by applying a magnetic field, simplifying separation steps.
References
- Design and Optimisation of Sustainable Sample Treatments Based on Ultrasound-Assisted Extraction and Strong Cation-Exchange Purification with Functionalised SBA-15 for Opium Alkaloids in Ground Poppy Seeds. Toxins (2023).
- Evaluation of the Transfer and Occurrence of Opium Alkaloids in Poppy Seed Teas Using Preconcentrations with µSPEed® Followed by GC-MS Analysis. Chemosensors (2023).
- Mesostructured Silica-Coated Magnetic Nanoparticles to Extract Six Opium Alkaloids in Poppy Seeds Prior to Ultra-High-Performance Liquid Chromatography-Tandem Mass Spectrometry Analysis. Foods (2021).
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