A multi-disciplinary team is helping to ensure food safety and authenticity.
The Food Safety Program at the National Institute of Standards and Technology (NIST) provides advanced analytical chemistry and quantitative biology to ensure that food is free of contaminants and allergens and is authentic, promoting U.S. manufacturers’ participation in domestic and foreign markets, and safeguarding the health of consumers.
Food contaminants can sicken consumers, cause outbreaks of disease, and result in costly investigations and recalls with subsequent loss of trust in manufacturers and suppliers. Consumer confidence and safety depend on sophisticated analysis and underlying metrology to detect both intentional and unintentional adulteration and to confirm the identity of food products.
Food industry sales in the U.S. amounted to nearly $5.75 trillion in 2017. As part of the Department of Commerce, it is in NIST’s mission to help promote competitiveness of and confidence in the U.S. food industry and other sectors, enhancing economic security and improving Americans’ quality of life.
The NIST Food Safety Program is
Standards - For over 30 years, NIST has supported the food industry, regulators, and testing laboratories by providing high-quality matrix-based reference materials for determination of nutrients and contaminants in foods.
Interlaboratory comparisons - For over 35 years, NIST has conducted accuracy-based interlaboratory comparisons aimed at improving laboratory comparability for food, dietary supplement, environmental, and clinical measurements.
International representation - As the U.S. National Metrology Institute, NIST is actively engaged in standards development and method standardization programs around the world, through organizations such as AOAC International, ASTM International, Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology, Joint Committee for Traceability in Laboratory Medicine, International Organization for Standardization, and United States Pharmacopeia.
Some recent examples:
Mycotoxins - The U.S. Food and Drug Administration expressed a need for the validation of higher-throughput methods for multiple mycotoxin analysis, and worked with NIST to design and generate a reference material to address this issue.
Tree nuts - NIST consulted industry stakeholders for input into the design of reference materials for tree nut allergens, and selected nut flours from single-nut manufacturers to reduce likelihood of cross-contamination of other allergens or tree nuts.
Gut microbiome - NIST scientists are engaged with other federal agency and industry stakeholders to develop standards for microbiome measurements, which will allow better understanding of the gut and how diet, nutrition, and exposure modulate the gut microbiome and impact health and disease.
Analytical chemistry - NIST laboratories contain the most robust analytical technologies and staff members trained to operate instrumentation and interpret data to understand and potentially eliminate method bias, increasing confidence in results.
Microbiology - NIST has developed a suite of microbial genomic DNA reference materials for quality control and proficiency testing in whole genome sequencing, the official method for identifying the sources of contaminated foods during foodborne outbreaks.
Radiation physics - NIST has extensive experience in the measurement of radioisotopes and assists regulators in evaluating methods for detection of radioisotopes found in foods.
Rapid technology - NIST scientists have engineered and patented fabricated devices to separate bacterial pathogens from food samples and thereby reduce the enrichment time from 24 hours to a few hours.
Method specificity - NIST scientists are developing specific food protein measurement methods and reference materials that support Food Modernization Safety Act compliance by proactively detecting adulterants such as melamine in infant formula and pet food and undeclared allergens, reducing the number of food recalls and risk to consumers, saving over $25 million for the food industry and $25 million in additional health care costs.
Metrological foundation - For over 30 years, NIST has provided measurement services that allow food industry stakeholders to demonstrate analytical capabilities and compliance with regulations, and has served as a resource for addressing emerging challenges.
1. Jahrman, E. P., Yu, L. L., Krekelberg, W. P., Sheen, D. A., Allison, T. C., and Molloy, J. L., "Assessing arsenic species in foods using regularized linear regression of the arsenic K-edge X-ray absorption near edge structure," Journal of Analytical Atomic Spectrometry, 37, 1247-1258 (2022).
2. Cruz, M. B., Place, B. J., Wood, L. J., Urbas, A., Wasik, A., and Rocha, W. F. D., "A nontargeted approach to determine the authenticity ofGinkgo bilobaL. plant materials and dried leaf extracts by liquid chromatography-high-resolution mass spectrometry (LC-HRMS) and chemometrics," Analytical and Bioanalytical Chemistry, 412, 6969-6982 (2020).
3. Heck, M. and Neely, B. A., "Proteomics in Non-model Organisms: A New Analytical Frontier," Journal of Proteome Research, 19, 3595-3606 (2020).
4. Phillips, M. and Zhang, K., "Mycotoxins and Food Safety-Prevention and Control: Expectation and Reality," Journal of Aoac International, 102, 1641 (2019).
5. Yu, L. L., Browning, J. F., Burdette, C. Q., Caceres, G. C., Chieh, K. D., Davis, W. C., Kassim, B. L., Long, S. E., Murphy, K. E., Oflaz, R., Paul, R. L., Sharpless, K. E., Wood, L. J., Yen, J. H., and Zeisler, R., "Development of a kelp powder (Thallus laminariae) Standard Reference Material," Analytical and Bioanalytical Chemistry, 410, 1265-1278 (2018).
6. Wise, S., "CCQM activities and impact in food safety and nutrition," Abstracts of Papers of the American Chemical Society, 250, (2015).
7. Sharpless, K. E., Thomas, J. B., Duewer, D. L., Putzbach, K., Rimmer, C. A., Sander, L. C., Schantz, M. M., Wise, S. A., Yarita, T., and Yen, J. H., "Preparation and characterization of standard reference material 3276, carrot extract in oil," Analytical and Bioanalytical Chemistry, 389, 207-217 (2007).
8. Sander, L. C., Sharpless, K. E., and Wise, S. A., "Dietary supplement Standard Reference Materials," Life Sciences, 78, 2044-2048 (2006).
9. Sharpless, K. E., Anderson, D. L., Betz, J. M., Butler, T. A., Capar, S. G., Cheng, J., Fraser, C. A., Gardner, G., Gay, M. L., Howell, D. W., Ihara, T., Khan, M. A., Lam, J. W., Long, S. E., McCooeye, M., Mackey, E. A., Mindak, W. R., Mitvalsky, S., Murphy, K. E., NguyenPho, A., Phinney, K. W., Porter, B. J., Roman, M., Sander, L. C., Satterfield, M. B., Scriver, C., Sturgeon, R., Thomas, J. B., Vocke, R. D., Wise, S. A., Wood, L. J., Yang, L., Yen, J. H., and Ziobro, G. C., "Preparation and characterization of a suite of ephedra-containing standard reference materials," Journal of Aoac International, 89, 1483-1495 (2006).