MITIGATION STRATEGIES FOR REDUCING ARS IN FOOD

Mitigating ARs in foods requires a comprehensive and integrated strategy that addresses the problem at multiple levels, from primary production to final consumption. Effective mitigation should not only target the root causes of contamination but also incorporate monitoring systems and technological interventions to ensure food safety and maintain technological reliability [12, 31]. To facilitate implementation and improve clarity, mitigation strategies can be categorized into three complementary levels: primary prevention, secondary detection, and tertiary technological intervention. A summary of these approaches is presented in Table 4[1, 4, 11, 12, 19, 21, 31, 48].

Primary prevention: Responsible antibiotic use and animal husbandry

The most effective approach for reducing ARs is prevention at the source through responsible antibiotic use in animal production. Antibiotics should be restricted to therapeutic applications and should not be routinely used for growth promotion or prophylaxis [1]. Strict adherence to withdrawal periods is essential to ensure that residues are eliminated from animal tissues before products enter the food chain [11].

Improved animal husbandry practices further contribute to reducing antibiotic dependence. Enhanced hygiene, optimized nutrition, and vaccination programs have been shown to reduce infection rates and decrease the need for antibiotic interventions [21, 48]. However, implementation remains challenging in smallholder production systems because of economic constraints, limited access to veterinary services, and inadequate awareness. These limitations highlight the need for context-specific interventions suitable for both industrial and resource-limited settings.

Secondary detection: Monitoring and surveillance systems

Monitoring systems play a critical role in identifying contamination and preventing ARs from entering the food supply. Routine sampling and analytical testing facilitate early detection and regulatory enforcement [12]. Advances in analytical technologies, including HRMS and biosensors, have substantially improved detection capabilities [19, 21]. In addition, rapid screening tools enable on-site testing and support real-time decision-making in food production systems [11].

Despite these advancements, surveillance systems remain unevenly distributed worldwide. In low- and middle-income countries, limited infrastructure, high operational costs, and shortages of technical expertise hinder effective monitoring programs, emphasizing the need for affordable and scalable detection technologies [6, 48].

Level | Strategy | Key actions | Target stage | Stakeholders | Advantages | Limitations | References
Primary prevention | Responsible antibiotic use | Restrict use to therapeutic purposes; avoid growth promotion; enforce veterinary prescription | Farm level | Farmers, veterinarians, regulators | Reduces residues at the source; most effective long-term solution | Requires behavioral change; weak enforcement in some regions | [1, 11]
Primary prevention | Withdrawal period compliance | Ensure sufficient time for drug elimination before harvesting products | Farm level | Farmers, regulators | Prevents residues from entering the food chain | Poor compliance because of economic pressures or lack of awareness | [11, 12]
Primary prevention | Improved animal husbandry | Hygiene, nutrition, biosecurity, and vaccination programs | Farm level | Farmers, veterinarians | Reduces disease incidence and antibiotic dependence | Requires infrastructure, training, and investment | [21, 48]
Secondary detection | Routine surveillance systems | Systematic sampling and laboratory testing of food products | Pre-market and market | Regulatory agencies | Enables early detection and regulatory enforcement | High operational costs; limited coverage in low- and middle-income countries | [12, 31]
Secondary detection | Rapid screening tools | ELISA, lateral flow tests, and biosensors for on-site monitoring | Farm and processing | Producers, inspectors | Fast, cost-effective, real-time detection | Lower specificity; requires confirmatory testing | [11, 21]
Secondary detection | Advanced analytical methods | LC-MS and HRMS for confirmatory multi-residue detection | Laboratory | Regulatory laboratories, researchers | High sensitivity and specificity | Expensive; requires technical expertise | [19]
Tertiary intervention | Processing technologies | Enzymatic degradation, adsorption, and residue-reduction methods | Processing stage | Food industry | Can reduce residue levels after contamination | Limited efficiency; not applicable to all antibiotics | [12, 31]
Tertiary intervention | Robust starter cultures | Development of residue-tolerant fermentation cultures | Processing stage | Food technologists, industry | Maintains fermentation performance | Potential AMR risk; regulatory and safety concerns | [21, 31]
Regulatory actions | MRL enforcement | Establish and enforce MRLs | National level | Governments, regulators | Ensures compliance and food safety | Weak enforcement in resource-limited settings | [4, 31]
Regulatory actions | International harmonization | Align standards among countries | Global level | WHO, Codex Alimentarius Commission, governments | Facilitates trade and regulatory consistency | Difficult global coordination | [1, 4]
Consumer-level actions | Awareness and education | Inform consumers about AR and AMR risks | Market | Consumers, public health agencies | Promotes safer consumption patterns | Requires effective communication strategies | [1, 11]
Cross-cutting | Traceability systems | Track the origin and quality of raw materials | Entire supply chain | Producers, regulators | Improves transparency and accountability | Implementation costs and data management complexity | [12]

Tertiary technological interventions

When contamination occurs, technological interventions may help reduce AR concentrations or mitigate their effects. Processing techniques such as enzymatic degradation and adsorption have shown potential for decreasing ARs without significantly affecting product quality [12].

Another promising approach involves the development of residue-tolerant starter cultures capable of maintaining fermentation performance in the presence of low residue concentrations [21, 31]. However, this strategy raises important safety concerns, particularly regarding the potential selection or dissemination of AMR genes within fermentation microbiota. Consequently, the application of such cultures requires rigorous safety assessments and regulatory evaluation.

Regulatory and policy interventions

Strong regulatory frameworks are essential for controlling antibiotic use and ensuring compliance with MRLs [4]. Governments must enforce regulations through surveillance programs, inspections, and penalties for noncompliance [31]. International collaboration is equally important for harmonizing standards and improving global food safety.

Organizations such as the Codex Alimentarius Commission and WHO provide guidelines that support coordinated monitoring and regulatory practices [1]. Nevertheless, disparities in regulatory capacity and enforcement remain major challenges, particularly in resource-limited settings where surveillance systems are often fragmented or underdeveloped.

Consumer awareness and market-based approaches

Consumer education plays a crucial role in mitigating AR-related risks. Public awareness campaigns can improve understanding of AMR and promote responsible consumption behaviors [1, 11]. Market-based mechanisms, including labeling schemes for antibiotic-free products, can provide economic incentives for producers to adopt safer practices [12].

However, the effectiveness of these approaches depends on consumer confidence, regulatory oversight, and the availability of reliable certification systems.

Sector-specific mitigation strategies

Mitigation approaches should also be tailored to specific production systems. In dairy industries, strict milk screening and appropriate starter culture management are essential. In fermented meat systems, controlling raw material quality and maintaining adequate acidification are critical. In aquaculture, reducing antibiotic use and improving water management practices represent key priorities.

For artisanal and traditional systems, education programs, simplified testing tools, and community-based interventions are particularly important. From an industrial perspective, practical implementation should include systematic screening of raw materials before processing, integration of rapid detection tools at critical control points, and optimization of starter culture selection according to resistance profiles.

Routine screening of milk batches in dairy plants is essential to prevent downstream fermentation failure. In meat fermentation systems, strict control of acidification kinetics may partially offset the inhibitory effects of residues. Similarly, in aquaculture-derived products, pre-processing residue monitoring is crucial for maintaining microbial activity and ensuring product quality.

Economic considerations and implementation challenges

Implementation of mitigation strategies involves considerable economic considerations. Advanced analytical technologies and improved husbandry practices require substantial investments, which may be prohibitive for small-scale producers. Therefore, cost-benefit analyses and financial support mechanisms are necessary to facilitate adoption, particularly in low- and middle-income countries.

Critical synthesis

Mitigating ARs in food systems requires a coordinated, multilevel approach integrating prevention, monitoring, technological interventions, and regulatory enforcement. No single strategy is sufficient on its own; instead, combinations of approaches tailored to local conditions are required to ensure effectiveness.

Future efforts should focus on improving the accessibility of technologies, strengthening regulatory frameworks, and developing sustainable and economically viable solutions. In addition, greater emphasis should be placed on the integration of digital surveillance systems, traceability technologies, and risk-based monitoring programs to improve early detection and facilitate coordinated responses.

By integrating these complementary strategies, stakeholders can reduce the prevalence of ARs, protect public health, and preserve the technological integrity and sustainability of fermentation-based food systems [11].