Food and Beverage Analysis Precise detection of toxic metals in food and environmental samples
P S Analytical (PSA) is a leader in providing high-performance analytical instruments for detecting mercury, arsenic, selenium, antimony, and bismuth in various sample matrices, including environmental and food and beverage samples. The presence of these toxic metals in different forms poses signifi cant health and environmental risks, making their detection a growing priority.
PSA’s solutions meet the increasing demand for both total and speciated analysis, which presents analytical challenges in terms of sensitivity, selectivity, and interference management. The company offers a range of
tools designed to address these challenges, ensuring highly accurate and reliable results.
For over 30 years, PSA has been at the forefront of Atomic Fluorescence Spectroscopy (AFS), utilising cold vapour and hydride generation for trace metal analysis. The company has further expanded its capabilities by integrating analyte separation, enabling speciation studies that distinguish between harmful and less toxic forms of metals.
Applications include the separation of methyl mercury from inorganic mercury in water, seafood, dairy, and grains, as well as the identifi cation of inorganic arsenic in
comparison to organic arsenic species in food items like rice and seaweed. These advances are vital for monitoring the safety of food products and environmental samples.
PSA continues to develop new methods to address emerging concerns and is open to collaborating with researchers and organisations to explore additional applications. With thousands of systems in operation across Europe, the USA, and Southeast Asia, PSA offers a reliable combination of performance, affordability, and excellent customer support.
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ilmt.co/PL/O3Bj Spectroscopy
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Dried pet food analysis using NIR spectroscopy
alternative, delivering results in around one minute, all with minimal preparation.
Traditional techniques to assess moisture, protein, fat, and ash in pet food are often both time-consuming and labour-intensive. In contrast, NIRS offers a rapid, non-destructive
In a study, 199 dried dog and cat food samples from various suppliers were analysed using the OMNIS NIR Analyser Solid. The system measured a mix of both whole and ground samples in diffuse refl ection mode, with rotating sample cups to ensure representative spectra. Calibration models were then developed by correlating NIR spectral data with reference values obtained through established ISO methods.
The results not only demonstrated a strong prediction performance for critical quality
Infrared (IR)
parameters, but they also highlight the signifi cant time savings NIRS provides in comparison to standard ISO methods, reducing multi-hour laboratory procedures to a single rapid scan.
With a pre-calibrated NIRS model available for pet food, Metrohm’s OMNIS NIR is an effective solution for routine quality control, helping manufacturers meet regulatory standards whilst also optimising production effi ciency.
Read the case study.
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Kits
PCR kit validated for Enterobacteriaceae in infant formula and cereals
for monitoring hygiene and process control. It allows rapid and dependable detection of Enterobacteriaceae, helping manufacturers maintain consistent quality and regulatory compliance.
MicroVal has certified the iQ-Check™ Enterobacteriaceae Kit from Bio-Rad Laboratories for reliable detection of Enterobacteriaceae in infant formula, cereals (with and without probiotics), and related ingredients.
Enterobacteriaceae are key hygiene indicators used to assess the effectiveness of manufacturing processes designed to eliminate or control bacterial contamination. The family includes important foodborne pathogens such as Salmonella, Cronobacter, and pathogenic E. coli.
The validation, performed according to ISO 16140-2:2016 and MicroVal technical guidance, confirmed that the iQ-Check Enterobacteriaceae method delivers performance equivalent to internationally recognised reference methods. Testing demonstrated excellent concordance with ISO 21528- 1, verifying the kit’s accuracy for use in samples up to 375 g.
Developed for use in industrial microbiology laboratories, the iQ- Check Enterobacteriaceae Kit offers a complete real-time PCR solution
The study also validated Bio-Rad’s iQ- Check Free DNA Removal Solution as part of the workflow, ensuring accurate results by removing DNA from non- viable cells prior to PCR analysis.
Franck Edouard, Senior Marketing Director for Bio-Rad’s Food Science Division, commented: “Infant formula and related products demand the highest standards of microbiological control. This certification underlines the robustness and versatility of our iQ-Check portfolio in supporting food safety assurance.”
The iQ-Check Enterobacteriaceae Kit complements Bio-Rad’s iQ- Check Salmonella spp. and iQ-Check Cronobacter Solution, providing a comprehensive suite of PCR-based food safety tests. MicroVal certificate number 2018LR80 is available on the MicroVal website. The kit also holds AOAC PTM validation (certificate 082003) for powdered infant formula and environmental samples.
More information online:
ilmt.co/PL/zeO7
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