A new analysis of laboratories participating in the Periodic Table of Food Initiative (PTFI) highlights the practical challenges involved in implementing standardized foodomics workflows across different research environments.
In a recent perspective article, researchers involved in the PTFI analyzed survey responses and interviews from laboratories participating in an international network applying standardized foodomics methods. Their findings highlight significant differences in infrastructure, procurement timelines, and technical support between laboratories in high-income countries (HICs) and those in low- and middle-income countries (LMICs).
Omics approaches such as metabolomics, lipidomics, and ionomics are increasingly used to characterize food composition at the molecular level, but differences in analytical workflows between laboratories can complicate comparisons across datasets. The PTFI seeks to address this challenge by distributing standardized analytical protocols to partner laboratories worldwide, including methods for elemental analysis, fatty acid profiling, lipidomics, and nontargeted metabolomics, alongside shared metadata and data practices.
To assess how these methods perform in practice, the researchers surveyed 133 participants across 19 laboratories involved in the initiative and received 34 responses representing institutions across five continents.
The results revealed clear differences in how laboratories implement standardized workflows depending on available infrastructure. Established analytical techniques such as fatty acid methyl ester (FAME) analysis were more commonly implemented in LMIC laboratories, while resource-intensive approaches such as nontargeted metabolomics were more frequently used in HIC settings.
Interviews with laboratory staff identified several factors affecting implementation, including instrument availability, procurement delays, and limited access to maintenance services or technical expertise. High-resolution mass spectrometers can cost more than one million dollars, and maintaining these instruments requires ongoing investment in service contracts and consumables.
Supply-chain logistics also emerged as a major constraint. Laboratories in LMIC regions reported average delivery times of 60 to 120 days for analytical reagents and consumables, several times longer than delivery times reported in HIC settings.
Despite these challenges, respondents across regions reported similar motivations for participating in standardized omics initiatives, including access to shared analytical methods, training resources, and opportunities for international collaboration.
The authors note that while standardized analytical protocols are essential for generating comparable datasets, successful implementation also depends on the availability of instrumentation, technical expertise, reliable supply chains, and sustained training and capacity-building efforts needed to support advanced omics workflows.
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