Introduction

Maintaining food safety within the context of global trade presents a complex array of challenges that demand coordinated, science-based solutions [1]. As food supply chains stretch across borders and involve multiple stakeholders from primary producers to international distributors, the need for integrated safety protocols becomes increasingly urgent. Ensuring the integrity of food systems requires collaboration among regulatory bodies, manufacturers, transporters, and consumers to uphold standards that protect public health and sustain market trust [2,3]. A major concern in global food safety is the prevention of illnesses linked to microbial contamination. Harmful pathogens such as Salmonella, E. coli, Listeria monocytogenes, and Campylobacter are frequently implicated in outbreaks and can enter the food chain through contaminated water, soil, livestock, or poor hygiene during processing and distribution [4]. To reduce these risks, rigorous sanitation and hygiene measures must be implemented throughout the supply chain. On farms, good agricultural practices (GAPs) help minimise contamination from environmental sources. In processing environments, adherence to good manufacturing practices (GMPs) and the Hazard Analysis and Critical Control Point (HACCP) system ensures that potential hazards are identified and controlled before they reach consumers [5].

The globalisation of food trade introduces additional layers of complexity, particularly in the enforcement of safety standards across jurisdictions. Imported goods must meet the same safety benchmarks as domestic products, necessitating international cooperation and regulatory alignment [6]. Organisations such as the Codex Alimentarius Commission (CAC) play a key role in harmonising food safety standards, while mutual recognition agreements and equivalence frameworks help streamline compliance and facilitate safe trade transparency [7]. Rapid and accurate traceability is essential for managing food-borne outbreaks in a global context. Technologies like bar-coding, radio-frequency identification (RFID), and blockchain enable stakeholders to track the movement and handling of food products in real time. These systems support swift recall actions and enhance transparency, thereby reducing the impact of contamination events on public health and consumer confidence [8].

Advancements in molecular diagnostics have further strengthened food safety surveillance. Techniques such as polymerase chain reaction (PCR) and next-generation sequencing (NGS) allow for precise detection and characterisation of pathogens, providing critical data for outbreak investigations and risk assessments [9]. These tools empower regulators and industry professionals to make informed decisions based on scientific evidence. Equally important is the role of consumer education in promoting food safety. When individuals are informed about proper food handling, labelling, and risk awareness, they become active participants in reducing food-borne illness. Public awareness campaigns and educational initiatives help cultivate a culture of shared responsibility across diverse communities and cultural settings [10]. This review critically examines the management of food safety within global supply chains, focusing on risk assessment methodologies and mitigation strategies that address microbial hazards, regulatory fragmentation, traceability challenges, and emerging technologies.

Risk Assessment Frameworks

Hazard Identification (Biological, Chemical, and Physical)

One of the most critical threats to food safety worldwide is contamination, particularly from biological and chemical sources. Pathogenic organisms, including bacteria, viruses, parasites, and fungi, remain leading causes of food-borne illnesses, posing serious risks to public health [11]. Common pathogens such as Salmonella, Listeria monotonousness, and Escherichia coli can infiltrate food products at multiple points along the supply chain, from agricultural production to processing, distribution, and retail [12].

Biological contamination often stems from poor hygiene among food handlers, insufficient cooking temperatures, and inadequate sanitation protocols in processing facilities. These risks are further compounded by improper storage conditions, such as inadequate refrigeration and cross-contamination during transportation. Because these lapses can go undetected until illness occurs, they frequently result in costly recalls, regulatory penalties, and reputational damage for food companies [13].

Chemical contamination presents another major concern. Exposure to pesticide residues, heavy metals, industrial pollutants, and food additives can compromise food safety, especially when agricultural chemicals exceed permissible limits. Mycotoxins, particularly aflatoxins, are increasingly problematic in regions with substandard storage infrastructure. These toxic compounds are known carcinogens, and chronic exposure through contaminated food can lead to severe health outcomes. Effective monitoring and control measures are essential throughout the entire supply chain to mitigate these risks [14, 15].

Risks, Characterisation and Management

Risk management in food safety involves evaluating various policy options to determine how best to address identified hazards, whether by accepting, minimising, or eliminating them and then selecting and applying the most appropriate strategies [16]. The effectiveness of a food safety policy depends heavily on a well-structured risk management framework. Such a system enables both preventive and corrective actions and relies on robust infrastructure, including clearly defined standards, regulations, and enforcement mechanisms [17].

                 
The Hazard Analysis and Critical Control Points (HACCP) system, developed by Pillsbury, the U.S. Army, and NASA and now a globally endorsed science-based model, is embodied in Figure’s process flow and is implemented through six interlinked principles that convert the diagram’s mapped operations into active controls. Beginning with a thorough hazard analysis, the team examines each step shown in the flow from raw‑material receipt through processing to dispatch to identify biological, chemical and physical hazards that could reasonably occur and to characterise their causes and consequences [18]. From that analysis, the team determines the Critical Control Points by identifying the specific stages in the mapped process where control is essential to prevent, eliminate or reduce those hazards to acceptable levels. For each CCP, the system then establishes critical limits that define the maximum or minimum value (for example, time, temperature, pH, or other measurable parameter) that separates safe from unsafe conditions, and these limits become the operational thresholds referenced on the process map [19]. To ensure those thresholds are met, monitoring procedures are put in place so that CCPs are continuously or periodically observed and recorded according to defined methods and responsibilities; monitoring data both demonstrate control and trigger timely action when deviations occur. When monitoring shows a critical limit has been exceeded, corrective actions are invoked to bring the process back under control, to contain or segregate affected product, and to investigate and eliminate the root cause so the flow depicted in Diagram 1 remains reliable. Finally, validation and verification activities are applied across the entire mapped system to confirm that the hazard analysis, CCP selection, critical limits, monitoring and corrective actions actually work in practice and are implemented as intended; routine verification, including review of process‑flow accuracy and records, ensures the preventive logic of the diagram remains current as technologies, equipment, and procedures evolve. Together, these six principles translate the preventive, risk-based structure represented in Figure 1 into a dynamic control system that shifts food safety away from end‑product testing and toward systematic prevention across the supply chain [20].

Global Supply Chain Challenges

The food industry has been completely disrupted through globalisation of trade and advances in supply chain logistics over recent decades. Today’s food supply chains support the movement of agricultural products and meals fabricated from them around the globe, presenting buyers with greatly improved access to a vast quantity of various foods irrespective of seasonal or geographical boundaries [21]. These developments in the food sector have transformed the whole food system, yet have brought another dimension of complexities, specifically food safety. Food safety and quality are a very global issue. The consumption of contaminated or unsafe food can lead to widespread illness and even death. Our globalised food systems have the consequence that contamination or adulteration in one region can spread instantly to the whole world, reaching the consumers. Risks associated with foodborne illnesses, cross-contamination and fraud are exacerbated in the context of the complex international food supply chains [22].

Traceability and Authenticity

Ensuring food safety across international supply chains relies heavily on effective traceability systems. These systems enable stakeholders to track the origin, movement, and handling of food products, which becomes especially critical during contamination events or outbreaks of foodborne illness [5]. However, achieving consistent traceability on a global scale is complicated by numerous factors. As international trade expands, food items often pass-through multiple countries, each with its own regulatory frameworks, technological capabilities, and safety standards. For instance, a single product may be manufactured in one nation, processed in another, and consumed in a third, making unified tracking difficult.

The lack of standardised traceability protocols across borders can delay response efforts and hinder the identification of contamination sources. While awareness of traceability’s importance has grown, many regions still lack the technological infrastructure needed to support it. Emerging tools such as blockchain, RFID (Radio Frequency Identification), and the Internet of Things (IoT) offer real-time tracking capabilities and enhanced transparency [6]. Despite their potential, adoption remains limited, particularly in developing economies where implementation costs are high, and collaboration across the supply chain is essential. Furthermore, the absence of harmonised global standards creates additional barriers, making it difficult to replicate these technologies consistently across different jurisdictions [7, 8].

Cross-Border Regulatory Challenges

The global food trade operates within a fragmented regulatory landscape, where safety standards and enforcement practices vary significantly between countries. No single regulatory system can comprehensively govern all food products without excluding certain categories, which presents challenges for companies navigating multiple compliance regimes. Businesses engaged in international trade often face the burden of adhering to two or more distinct food safety systems, complicating operations and increasing costs [9, 10].

The Codex Alimentarius Commission, established by the World Health Organisation (WHO) and the Food and Agriculture Organisation (FAO), plays a vital role in promoting international food safety standards. Its influence is often more pronounced in developing nations. Discrepancies in national standards regarding pesticide residues, food additives, and permissible contaminant levels can lead to confusion and create trade barriers. Multinational companies must invest considerable time and resources to comply with this regulatory patchwork [11].

Economic Fraud and Food Adulteration

Food fraud, defined as the intentional misrepresentation, substitution, or adulteration of food products for financial gain, has emerged as a serious concern in global food systems. These deceptive practices compromise both the safety and quality of food, often placing consumers at risk. Common forms of fraud include mislabeling ingredients, replacing high-value components with cheaper alternatives, and introducing harmful substances into food items [12, 13].

Notable examples include the 2013 horse meat scandal in Europe, where horse meat was fraudulently sold as beef in frozen products, exposing vulnerabilities in supply chain oversight and labelling integrity. Another case is the melamine contamination of dairy products in China, which severely undermined public trust and resulted in widespread health consequences [14]. The health risks associated with food fraud are particularly acute when toxic or substandard ingredients such as contaminated honey or diluted olive oil are used. Table 1 highlights representative incidents that illustrate the range and impact of these threats.

Mitigation Strategies

Hazard Analysis and Critical Control Points (HACCP) ISO 22000

Effective prevention of food safety incidents depends on a strong Food Safety Management System. Frameworks like Hazard Analysis and Critical Control Point and ISO 22000 enable organisations to identify hazards at each stage of production and processing and to put in place controls that reduce those risks. Adopting internationally recognised standards help ensure consistent product quality and safety across operations. Regularly updating the FSMS to reflect new scientific findings and emerging threats keeps controls relevant and maintains a proactive stance in a dynamic global supply chain [12, 13].

Blockchain and Digital Traceability

Blockchain offers a way to strengthen traceability by recording product movements in an immutable, transparent ledger, as shown in Figure 2. This ledger shortens the time needed to locate contamination sources and accelerates recalls to limit public exposure, and when paired with Internet of Things devices it enriches traceability with real‑time sensor data from production, storage, and transport while Radio Frequency Identification tags add an automated layer of continuous tracking to help ensure item are stored and handled under appropriate conditions, thereby minimizing contamination risk [14, 15]. 

Rapid Testing Methods (Biosensors and PCR)

Rapid, on-site diagnostic tools are critical for early detection of contaminants and pathogens throughout the food supply chain. Biosensors combine a biological recognition element (for example, antibodies, aptamers, enzymes, or nucleic acids) with a physicochemical transducer to deliver rapid, sensitive, and often portable detection of bacteria, viruses, toxins, and chemical residues. Modern biosensor platforms use electrochemical, optical, or piezoelectric transduction and can produce results within minutes to hours, enabling near–real-time monitoring at critical control points and faster decision-making during suspected contamination events [17].

Miniaturised and microfluidic biosensor systems further reduce sample volume and processing time while enabling multiplexed detection and on-chip sample preparation; these features facilitate integration with automated readouts and remote monitoring networks for rapid outbreak response [18]. Advances in nanomaterials and signal-amplification strategies have improved sensitivity and lowered detection limits in complex food matrices, making biosensors increasingly useful as frontline screening tools.

Molecular methods based on polymerase chain reaction (PCR) remain the gold standard for specific pathogen identification and confirmation. Real-time quantitative PCR (qPCR) enables rapid, sensitive, and specific detection and quantification of microbial DNA or RNA, supporting species/serotype identification and detection of virulence or resistance genes for epidemiological investigation and risk assessment [19]. Isothermal amplification techniques such as loop-mediated isothermal amplification (LAMP) offer comparable sensitivity with simpler equipment requirements and faster turnaround times, making them suitable for near-field or resource-limited settings [20].

An effective testing strategy commonly layers technologies: biosensors are deployed for high-throughput or on-site screening to flag suspect samples quickly, while PCR/qPCR or LAMP serve as confirmatory methods that provide definitive identification and characterisation. Widespread implementation requires standardised sample preparation, cross-validation across food matrices, cost reductions, and alignment with regulatory requirements to ensure field-adopted methods generate reliable, actionable results [21, 22].

Policy and International Collaboration

Codex Alimentarius

Codex Alimentarius offers a global framework for food safety, but its guidelines are adopted on a voluntary basis, and countries may adopt their own national standards. Food safety regulations are therefore significantly different between developed and developing countries. Streamlining regulations and establishing international standards for safety are means to reduce trade barriers, enhance consumer confidence, and ease the regulatory process for firms that deal in products sold throughout the globe [16]. Governments and international bodies should combine forces to develop clearer food safety rules, investigating everything from the way pesticides are used to the levels of food additives and contaminant thresholds that are acceptable. Further, a more integrated approach toward the inspections and the audits of food safety should be made [17]. This would facilitate the simplification of the global food safety system by diminishing the complexity and cost of conformity for food producers as well as exporters.

WHO/FAO Initiatives

The World Health organization has updated a global framework to strengthen food safety systems, emphasising the need for political commitment, multisectoral coordination, and investments to reduce the burden of foodborne disease and protect public health [18]. The strategy prioritises strengthening national food control systems, improving surveillance and outbreak response, promoting regulatory coherence, and fostering innovation and capacity building to address emerging risks such as climate change and food fraud [19].

Complementing WHO efforts, the Food and Agriculture Organisation has articulated strategic priorities for food safety within its 2022–2031 strategic framework, focusing on risk-based approaches, capacity development, improved surveillance and laboratory networks, and enhanced food chain governance [20]. FAO’s priorities highlight the importance of evidence-based policy, support for low and middle-income countries to meet international standards, and the promotion of technologies and practices that strengthen traceability and control of biological, chemical, and physical hazards across supply chains [21].

Future Directions

Blockchain and Digital Traceability

Distributed ledger technologies can substantially improve traceability and transparency by creating tamper-resistant records of product movements and handling events. Real-time, auditable trace data helps accelerate identification of contamination sources and shortens recall timelines, thereby limiting population exposure to unsafe products [22].

Artificial Intelligence and Predictive Analytics

Machine learning and predictive analytics platforms can synthesise large volumes of supply-chain, sensor, and laboratory data to detect anomalies and forecast risk conditions before they escalate. These tools enable risk-based decision making, targeted inspections, and dynamic allocation of resources to high-risk nodes in the chain [7, 8].

Nanotechnology and Advanced Sensing

Nanomaterials and nano-enabled sensors enhance the speed and sensitivity of contaminant detection. Nanobiosensors, electronic noses/tongues, and other miniaturised e-sensing devices provide rapid, on-site screening for pathogens, chemical residues, and spoilage markers; they also support integration with IoT networks for continuous monitoring [9]. Widespread deployment will depend on standardising validation protocols, addressing safety and regulatory questions, and ensuring cost-effective manufacturing for field use.

Cross-cutting Considerations

Successful adoption of these innovations requires interoperable standards, investment in digital and laboratory infrastructure, especially in low- and middle-income countries and regulatory pathways that accept validated rapid methods and digital evidence for enforcement and recalls [11, 12]. Public–private collaboration and capacity building will be essential to scale technologies while protecting consumers and enabling equitable market access.

Conclusion

Food safety management in global supply chains must unite preventive process control with trustworthy, real-time traceability and advanced sensing to manage risks effectively and respond rapidly when problems arise. The HACCP framework provides the operational backbone by mapping processes, identifying Critical Control Points, and defining controls, limits, monitoring and corrective actions; when these CCP data streams are anchored to an immutable traceability layer such as a permissioned blockchain, auditability and tamper‑resistance improve markedly, and investigations or recalls can be targeted and completed far more quickly. Integrating Internet of Things sensors and RFID with the ledger enriches each transaction with environmental and movement data, enabling faster detection of deviations and clearer root‑cause analysis across complex, multi-jurisdictional supply networks.

When prevention (HACCP), immutable traceability (blockchain), and advanced sensing and analytics (nanotechnology, biosensors, AI, edge computing) are implemented together within interoperable standards and inclusive governance, the result is a resilient, adaptive food‑safety architecture that shortens recall times, reduces public exposure to hazards, strengthens regulatory oversight, and builds greater consumer confidence across increasingly interconnected global supply chains.

Acknowledgement

We thank all the researchers who contributed to the success of this research work.

Conflict of Interest

The authors declared that there are no conflicts of interest.

Funding

No funding was received for this research work.

References

1. Bosona, T., & Gebresenbet, G. (2013). Food traceability as an integral part of logistics management in food and agricultural supply chain. Food Control, 33, 32–48. https://doi.org/10.1016/j.foodcont.2013.02.004
2. Bustin, S. A., Benes, V., Garson, J. A., Hellemans, J., Huggett, J., Kubista, M., … Wittwer, C. T. (2009). The MIQE guidelines: Minimum information for publication of quantitative real-time PCR experiments. Clinical Chemistry, 55(4), 611–622.
3. Butterly A, Bittner EA, George E et al. Postoperative residual curarization from intermediate-acting neuromuscular blocking agents delays recovery room discharge. Br J Anaesth 2010;105:304–9.
4. Chen, Q. Li, D. Zheng et al. Clinical characteristics of pregnant women with Covid-19 in Wuhan, ChinaN Engl J Med, 2020; 382 (25):100
5. Dexter F, Tinker JH. Analysis of strategies to decrease postanesthesia care unit costs. Anesthesiology 1995;82:94–101.
6. Food and Agriculture Organization. (2023). FAO strategic priorities for food safety within the FAO strategic framework 2022–2031. Food and Agriculture Organization of the United Nations. https://doi.org/10.4060/cc4040en
7. Henson, S., & Reardon, T. (2005). Private agri-food standards: Implications for food policy and the agri-food system. Food Policy, 30, 241–253. https://doi.org/10.1016/j.foodpol.2005.05.002
8. Herman J, Urits I, Urman RD et al. Synergistic effect of perineural dexamethasone and dexmedetomidine (Dex-Dex) in extending the analgesic duration of a transversus abdominis plane block. J Clin Anesth 2020; 63
9. Langbein T, H Sonntag, D Trapp et al. Volatile anaesthetics and the atmosphere: atmospheric lifetimes and atmospheric effects of halothane, enflurane, isoflurane, desflurane and sevoflurane. Br J Anaesth, 1999; 82 (19): 66-73
10. Notomi, T., Okayama, H., Masubuchi, H., Yonekawa, T., Watanabe, K., Amino, N., & Hase, T. (2000). Loop-mediated isothermal amplification of DNA. Nucleic Acids Research, 28(12), E63.
11. Ryan SM, CJ Nielsen. Global warming potential of inhaled anesthetics: application to clinical use. Anesth Analg, 2010; 111 (10), 92-8
12. Spink, J., & Moyer, D. C. (2011). Defining the public-health threat of food fraud. Journal of Food Science, 76(9), R157–R163. https://doi.org/10.1111/j.1750-3841.2011.02417.x
13. Sulbaek Andersen MP, SP Sander, OJ Nielsen et al. Inhalation anesthetics and climate change. Br J Anaesth, 105 (2010), pp. 760-66.
14. Tian, F. (2017). A supply chain traceability system for food safety based on HACCP, blockchain and Internet of Things. Proceedings of the International Conference on Service Systems and Service Management, Dalian, 16–18 June 2017, 1–6.
15. Turner, A. P. F. (2013). Biosensors: sense and sensibility. Chemical Society Reviews, 42(8), 3184–3196.
16. Walsh M, Devereaux PJ, Garg AX et al. Relationship between intraoperative mean arterial pressure and clinical outcomes after noncardiac surgery: toward an empirical definition of hypotension. Anesthesiology 2013;119:507–15
17. World Health Organization. (2021). WHO global strategy for food safety: Towards 2030. World Health Organization.
18. Emochone Roy Yohanna, Moses Adondua Abah, Micheal Abimbola Oladosu, Okpanachi Nuhu Oyibo, Iheanacho Chinedu Christian, Victoria Chibuihe Nnamdi, Wontumi Samuel Odarno, and Iheakolam Uchenna Caleb (2026). Production and Characterization of Pectinase from Aspergillus niger Using Orange Peels as Carbon Source. Journal of Food and Biotechnology. DOI: https://doi.org/10.51470/FAB.2026.7.1.13
19. Aisha U. Danlami, Abolarinwa S.O, Micheal Abimbola Oladosu, Moses Adonduah Abah, Blessing Imade, Okabeonye Sunday Agbo, Fathia Agbolagade, Kevin Emmanuel Amuchechukwu, Sulaiman Luqman Olaitan, Tobi David Farinde, Olutayo Nathanael Farinde, Ekele Jiata Ugwah, Julius Sarah Oluwaseun and Abah Sarah Onyeoche (2025). Assessment of Bioactive Compounds and Molluscicidal Activity of Neem (Azadirachta indica) and Bitter Leaf (Vernonia amygdalina) Extracts against Biomphalaria pfeifferi, a Schistosomiasis Vector. Plant Science Archives. DOI: https://doi.org/10.51470/PSA.2025.10.4.63
20. Anih David Chinonso, Arowora Kayode Adebisi, Imo Chinedu, Moses Adondua Abah, Ekele Jiata Ugwah, Eunice Ibukunoluwa Olobatoke, Asare Bernard Kwame, Atunwa Bushirah Omolara, Farayola Deborah Taiwo, Sojay Tryphosa Tibile, Oghenetejiri C. Ovwigho-Ugbede, Anifowose Isaiah Olumide and Ibeojo Blessing Ugoojo (2025). Nutritional Evaluation and Alatoxin Levels in Selected Leguminous Grains Retailed in Wukari, Taraba State, Nigeria. Plant Science Archives. DOI: https://doi.org/10.51470/PSA.2025.10.4.34
21. Chinonso , Anih David, Arowora Kayode Adebisi, Imo Chinedu, Amos Lukas Maishera, Moses Adondua Abah, Ekele Jiata Ugwah, Barrah Collins, Sojay Tryphosa Tibile, and Emmanuel Agada Eneojo. 2023. “Proximate Levels and Phytochemical Contents in Selected Cereals Sold in Wukari Local Government Area of Taraba State”. Asian Journal of Research in Biosciences 2023 (5):35-42.
22. Silas TV, Stephen EC, Abah MA, Michael AS, Isaac UJ, Emochone RY. Growth indices of seeds (maize and cowpea) grown in heavy metal contaminated soil treated with ginger extract. Toxicol Adv. 2023;5(4):17. doi:10.53388/TA202305017