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Wang D, Fei Y, Niu C, Lu S, Chen X, Wu Y, He P, Zhang X, Chen H, Wang H, Gao Y. Proficiency testing for event-specific quantification of genetically modified maize MON87427: Performance assessment based on the metrologically traceable reference values as assigned values. Food Chem 2024; 453:139668. [PMID: 38805943 DOI: 10.1016/j.foodchem.2024.139668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/08/2024] [Accepted: 05/12/2024] [Indexed: 05/30/2024]
Abstract
The Asia Pacific Metrology Program and the Accreditation Cooperation joint Proficiency Testing (PT) program for the quantification of genetically modified maize MON87427 was organized by the National Institute of Metrology, China, to enhance the measurement accuracy and metrological traceability in the region. Certified reference materials were employed as test samples; metrologically traceable certified reference values served as PT reference values (PTRVs) for evaluating the participants results. The consensus values obtained from the participants were higher than the assigned values, potentially due to the systematic effects of DNA extraction process. The participants' relatively poor overall performance by the ζ-score compared with z-score demonstrates their need to thoroughly investigate quantification bias to elevate the measurement capability of genetically modified (GM) content and deepen their understanding of uncertainty estimation. This program confirmed the importance of using metrologically traceable reference values instead of consensus values as PTRV for reliable performance assessment.
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Affiliation(s)
- Di Wang
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Yue Fei
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Chunyan Niu
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Song Lu
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Xian Chen
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Yuhua Wu
- Key Laboratory of Agricultural Genetically Modified Organisms Traceability of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Ping He
- Specialized Standards Accreditation Department (SSAD), China National Accreditation Service for Conformity Assessment (CNAS), Beijing 100062, China
| | - Xiujie Zhang
- Development Center for Science and Technology, Ministry of Agriculture and Rural Affairs (MARA), Beijing 100176, China
| | - Hong Chen
- Development Center for Science and Technology, Ministry of Agriculture and Rural Affairs (MARA), Beijing 100176, China
| | - Haoqian Wang
- Development Center for Science and Technology, Ministry of Agriculture and Rural Affairs (MARA), Beijing 100176, China
| | - Yunhua Gao
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China.
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Proficiency of European GMO control laboratories to quantify MON89788 soybean in a meat pâté matrix. Food Control 2023; 145:109454. [PMID: 36875540 PMCID: PMC9733489 DOI: 10.1016/j.foodcont.2022.109454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/07/2022]
Abstract
GMO control laboratories in the EU routinely monitor the presence and content of genetically modified organisms (GMOs) in food and feed products collected from the EU market. As the vast majority of GMOs comprize genetically modified plants, most control samples have a plant-based origin. For the first time, a pilot proficiency test was organised requiring the analysis of GMOs in a meat matrix. Meat pâté, a product in which soybean is occasionally identified, was spiked with GM soybean event MON89788, homogenised by mixing, aliquoted in sachets and frozen. The assigned value was determined by two independent expert laboratories. Several DNA extraction methods were tested and proved to be insufficient for the removal of PCR inhibitors present in the DNA extracts, resulting in a GM content underestimated by at least 30%. This problem was solved either by using hot-start qPCR chemistry or by applying the same method in a digital PCR format. A total of 52 laboratories participated in the study. They were requested to verify the presence of any GM soybean in the test item and to quantify the GM event(s) identified by their method of choice. All but one laboratory identified the MON89788 soybean event present in the pâté matrix. The majority of the quantitative results reported were below the assigned value, but did not deviate more than 50% from it. This study demonstrated the proficiency of most GMO control laboratories for the analysis of GMOs in a meat-based product. It also shows that method optimisation for GMO analysis in meat products is nevertheless advisable.
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Food Safety Assessment: Overview of Metrological Issues and Regulatory Aspects in the European Union. SEPARATIONS 2022. [DOI: 10.3390/separations9020053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The safety of the food we consume has a direct impact on individual and population health and affects the economic growth of the region where food safety is practised and enhanced. The central goal of the European Commission’s Food Safety policy is to ensure a high level of protection of human health covering the whole supply chain. In recent years, great attention has been paid to food testing and the application of metrological tools to support food safety. The global food market and national and international food safety regulations have created a huge demand for the measurement traceability and comparability of analytical results that are independent of time or space boundaries. This review provides an overview of the European food safety policy and regulation, with a focus on the measurement-related elements of the European Union (EU) food law. It also highlights how the application of analytical techniques, with particular reference to separation approaches, and metrological tools can ensure the control of certain contaminants that nowadays represent the main challenges for food safety (e.g., mycotoxins, nanoparticles, emerging and process contaminants). METROFOOD-RI-Infrastructure for promoting metrology in food and nutrition is therefore described in this context. This European research infrastructure has been developed and is being implemented in the frame of the European Strategy Forum on Research Infrastructures (ESFRI) to support metrology in food and nutrition and establish a strategy allowing reliable and comparable analytical measurements in food across the entire process line, from primary producers to consumers, and making data findable, accessible, interoperable, and reusable (FAIR).
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Esteban López M, Göen T, Mol H, Nübler S, Haji-Abbas-Zarrabi K, Koch HM, Kasper-Sonnenberg M, Dvorakova D, Hajslova J, Antignac JP, Vaccher V, Elbers I, Thomsen C, Vorkamp K, Pedraza-Díaz S, Kolossa-Gehring M, Castaño A. The European human biomonitoring platform - Design and implementation of a laboratory quality assurance/quality control (QA/QC) programme for selected priority chemicals. Int J Hyg Environ Health 2021; 234:113740. [PMID: 33774419 DOI: 10.1016/j.ijheh.2021.113740] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/25/2021] [Accepted: 03/10/2021] [Indexed: 12/15/2022]
Abstract
A fundamental objective of the human biomonitoring for Europe initiative (HBM4EU) is to progress toward comparable and robust exposure data for a wide variety of prioritized chemicals in human samples. A programme for Quality Assurance/Quality Control (QA/QC) was designed in HBM4EU with the purpose of creating a network of European laboratories providing comparable analytical data of high quality. Two approaches were chosen for two sets of prioritized chemicals with different timelines: (i) Scheme 1, where interested candidate laboratories participated in multiple rounds of proficiency tests (ii) Scheme 2, where selected expert laboratories participated in three rounds of interlaboratory comparison investigations. In both cases, the results were used to identify laboratories capable of generating consistent and comparable results for sample analysis in the frame of HBM4EU. In total, 84 laboratories from 26 countries were invited to participate in Scheme 1 that covered up to 73 biomarkers from Hexamoll® DINCH, phthalates, bisphenols, per- and polyfluoroalkyl substances, halogenated flame retardants (HFRs), organophosporous flame retardants (OPFRs), polycyclic aromatic hydrocarbons (PAH), cadmium, chromium and aromatic amines. 74 of the participants were successful for at least one biomarker in Scheme 1. Scheme 2 involved 22 biomarkers and successful results were obtained by 2 expert laboratories for arsenic, 5 for acrylamide, 4 for mycotoxins, 2 for pesticides and 2 for UV-filters in skin care products. The QA/QC programme allowed the identification of major difficulties and needs in HBM analysis as well of gaining insight in the analytical capacities of European laboratories. Furthermore, it is the first step towards the establishment of a sustainable European network of HBM laboratories.
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Affiliation(s)
- Marta Esteban López
- National Centre for Environmental Health, Instituto de Salud Carlos III (ISCIII), Majadahonda, Spain.
| | - Thomas Göen
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander Universität Erlangen-Nürnberg (IPASUM), Erlangen, Germany
| | - Hans Mol
- Wageningen Food Safety Research, Part of Wageningen University & Research, Wageningen, Netherlands
| | - Stefanie Nübler
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander Universität Erlangen-Nürnberg (IPASUM), Erlangen, Germany
| | - Karin Haji-Abbas-Zarrabi
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander Universität Erlangen-Nürnberg (IPASUM), Erlangen, Germany
| | - Holger M Koch
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University-Bochum (IPA), Bochum, Germany
| | - Monika Kasper-Sonnenberg
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University-Bochum (IPA), Bochum, Germany
| | - Darina Dvorakova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology (UCT), Prague, Czech Republic
| | - Jana Hajslova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology (UCT), Prague, Czech Republic
| | | | | | - Ingrid Elbers
- Wageningen Food Safety Research, Part of Wageningen University & Research, Wageningen, Netherlands
| | - Cathrine Thomsen
- Department of Environmental Health, Norwegian Institute of Public Health (NIPH), Oslo, Norway
| | - Katrin Vorkamp
- Department of Environmental Science, Aarhus University (AU), Roskilde, Denmark
| | - Susana Pedraza-Díaz
- National Centre for Environmental Health, Instituto de Salud Carlos III (ISCIII), Majadahonda, Spain
| | | | - Argelia Castaño
- National Centre for Environmental Health, Instituto de Salud Carlos III (ISCIII), Majadahonda, Spain.
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