Hygiene, Food & Safety: How to Prevent Contamination and Ensure Consumer Safety

From official controls to digital hygiene: why food safety depends on prevention, surfaces, data and rapid response

Food safety is one of the few qualities that a food product cannot use as a marketing claim in the same way as taste, origin, texture or convenience. It is not an optional advantage, nor a premium attribute. It is the minimum condition that allows a food product to exist on the market. Consumers rarely notice it when it works, but the entire system becomes visible when something fails: an outbreak, a recall, a food poisoning episode, a production error, a loss of traceability or a sanitation procedure that was not correctly followed.

The FoodTech Village webinar Hygiene, Food & Safety: How to Prevent Contamination and Ensure Consumer Safety. Recent Cases of Food Poisoning addressed this foundation of the food sector from three complementary perspectives. The first was institutional and scientific, with Dr. Manila Bianchi from the Istituto Zooprofilattico Sperimentale in Turin, who presented the role of official laboratories in food safety surveillance and described recent cases of food poisoning. The second was infrastructural, with Dr. Daniele Martino of Sireg/Zerica, who focused on antibacterial industrial flooring and the role of production surfaces in contamination prevention. The third was operational and digital, with Dr. Greta Cifarelli of Ecolab, who discussed how real-time monitoring tools can improve cleaning and disinfection control in food plants.

Together, these contributions made a clear point: food safety is not guaranteed by one technology, one regulation or one laboratory test. It is the result of a network of controls, procedures, materials, human behaviour and increasingly digital systems that must work together before, during and after production.

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Food safety as a system, not a single checkpoint

The webinar opened with a reminder that food safety represents a fundamental pillar of the entire food industry. Unlike many product attributes, safety cannot be treated as a label claim. It must be guaranteed through rigorous and continuous control. The relevance of this topic was underlined by recent episodes of botulism in Italy, including severe and fatal cases, and by the constant flow of national and international alerts concerning pathogenic microorganisms in foods.

Dr. Manila Bianchi’s presentation placed this reality within the framework of official control. The Istituto Zooprofilattico Sperimentale is a public health institution and an official food safety control laboratory working within the Italian Ministry of Health system. Its activity is built around a One Health approach, connecting animal health, zoonosis surveillance, food chain monitoring and consumer protection.

This perspective is essential because food safety does not begin at the factory gate. It extends across the food chain: farms, animals, raw materials, processing environments, operators, distribution systems, retailers and domestic handling. A contamination event may emerge at any point, and investigation often requires cooperation between veterinarians, inspectors, epidemiologists, laboratories, competent authorities and food business operators.

The Italian network of Istituti Zooprofilattici plays a crucial role in this system. Laboratories share protocols, methods, analytical instruments and competences across the national territory, supporting official control plans and outbreak investigations.

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Regulation and risk-based official control

Food safety is also a regulatory architecture. Dr. Bianchi referred to the main European regulations that define the principles and procedures of official controls, including the general principles of food law and the framework for official control activities. At microbiological level, regulatory criteria define how competent authorities and food business operators assess whether a food can be considered compliant and safe.

The key principles are risk analysis, precaution and protection of consumer interests. Official controls are not random acts of inspection; they are part of organised plans that move from national control programmes to regional and local health services. Samples collected during inspections, audits or investigations are then analysed by official laboratories.

This structure is often invisible to the consumer, but it is what allows food systems to respond when something goes wrong. It also demonstrates why food safety cannot depend only on end-product testing. Surveillance, traceability, risk assessment and preventive procedures are all necessary.

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Case study: botulism from homemade mushrooms in oil

The first case presented by Dr. Bianchi concerned a man admitted to a Turin hospital with symptoms strongly suggestive of botulism: difficulty swallowing, double vision, vomiting, dry mouth and difficulty speaking. Because his condition made direct interview difficult, epidemiologists spoke with relatives, who reported the presence of homemade mushrooms preserved in olive oil.

This information immediately directed the investigation. Preserved foods in oil, especially when homemade and insufficiently controlled, can create conditions favourable to Clostridium botulinum, the bacterium capable of producing botulinum neurotoxins.

The laboratory used two approaches. The first was multiplex real-time PCR to detect the presence of clostridia capable of producing neurotoxins. The second, used only in very specific emergency situations, was the mouse test to identify active neurotoxin. In this case, botulinum neurotoxin type B was detected in clinical and food samples.

The epidemiological investigation revealed that the preserved mushrooms had been produced in Calabria and distributed as gifts to relatives and friends living in Piedmont and Sardinia. This transformed the case from an isolated poisoning into a multi-regional alert. The national alert system was activated, the remaining jars were withdrawn and further consumption was prevented.

This case illustrates several important lessons. First, food safety does not concern only industrial products. Homemade preserves can be extremely risky when procedures such as acidification and sterilisation are not correctly managed. Second, rapid recognition of symptoms is essential. Third, the effectiveness of the response depends on the ability to connect clinical evidence, laboratory analysis, epidemiological investigation and public health action.

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Botulism: training and preparedness remain essential

During the discussion, Prof. Porretta raised a critical point: recent botulism cases in Italy have not involved only domestic preserves, but also food produced or distributed at industrial and food service levels. This raises the question of training and preparedness.

Dr. Bianchi confirmed that procedures such as acidification, sterilisation and all steps designed to reduce botulism risk cannot be neglected, simplified or modified casually in the name of modern styles or new food trends. This is an important warning. Innovation in food production must not weaken basic safety principles.

The discussion also touched on the availability of botulinum antitoxin. While reference centres can provide antidotes, distance and timing remain critical factors. When cases occur far from major hospitals or specialised centres, rapid access may become more complicated. This reinforces the need for awareness among healthcare professionals, food operators and public authorities.

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Case study: staphylococcal enterotoxins in mountain sandwiches

The second outbreak presented by Dr. Bianchi occurred during a hike in the Piedmont Alps. A family group consumed cheese and ham sandwiches purchased from a mountain bar. Several members, including children, developed vomiting and diarrhoea within a few hours.

Because the symptoms appeared during a mountain excursion, it was not possible to collect biological samples from patients immediately. Later investigation focused on food samples from the bar. The sandwiches themselves were no longer available, but local health services collected cheese and ham from batches likely used to prepare them.

Laboratory results found coagulase-positive staphylococci in the cheese samples and confirmed the presence of staphylococcal enterotoxins using ELISA tests. These toxins are particularly relevant because they can persist even when the microorganism itself is reduced or inactivated by processing, heating or ripening. The toxin, rather than the live bacterial count alone, can cause illness.

The investigation also revealed poor hygiene procedures and insufficient traceability at the bar. This case demonstrates how failures in small food service operations can create real consumer risk, especially when hygiene, temperature control and supplier traceability are weak.

Unlike the botulism case, this outbreak did not become a newspaper story. But from a food safety perspective it is equally instructive. Many failures are not dramatic, but they reveal the same underlying issue: safety depends on procedures being correctly applied every day, even in apparently simple contexts such as sandwich preparation.

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Surfaces as structural components of food safety

The second part of the webinar moved from microbiological investigation to production environments. Dr. Daniele Martino presented antibacterial industrial flooring designed for food production areas, placing flooring within a broader hygiene strategy.

In food and beverage plants, floors are not neutral surfaces. They are exposed to water, organic residues, cleaning chemicals, mechanical stress, temperature changes, trolleys, personnel movement and possible microbial contamination. If damaged or poorly designed, they can become reservoirs for bacteria, fungi or dirt. Cracks, joints, absorbent surfaces and difficult-to-clean areas may compromise hygiene.

For this reason, food industry flooring must meet strict requirements: it must be resistant, non-absorbent, washable, non-toxic and compatible with cleaning and sanitisation procedures. In areas such as laboratories, cold rooms, clean rooms and production departments, even small surface defects can become contamination points.

The idea presented during the webinar was therefore important: the floor is not merely a technical surface. It is a structural component of food safety.

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Antibacterial resin flooring and silver-ion technology

The antibacterial flooring solution described by Dr. Martino is based on resin systems incorporating antimicrobial additives that release silver and copper ions through zeolite carriers. Zeolites are microporous crystalline aluminosilicates with high surface area, allowing controlled and efficient ion delivery at the surface.

The technology is designed to inhibit the growth of fungi and bacteria on flooring surfaces, including microorganisms relevant to food production environments. The antibacterial properties are integrated into the finishing layer without compromising mechanical or aesthetic performance.

According to the presentation, tests carried out on the final polymer composite showed a reduction efficiency greater than 99.9% compared with finishing without the additive. The system is intended to reduce surface microbial load, improve hygiene, lower cross-contamination risk between production areas, resist frequent washing and support compliance with hygiene protocols.

An important clarification was also made: antibacterial flooring does not replace good hygiene practices. It complements them. This is a crucial distinction. No material, however advanced, can compensate for poor cleaning, weak procedures or lack of maintenance. Antibacterial surfaces can reduce risk, but they must be part of an integrated system.

The discussion also addressed durability and cost. The antibacterial additive is incorporated into the surface and distributed through the finishing thickness, making the effect long-lasting even under wear. The additional cost was estimated at around 10% for the finishing component, with limited impact on the overall flooring project.

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Cleaning and disinfection: the human variable

The final presentation, by Dr. Greta Cifarelli of Ecolab, focused on cleaning and disinfection from an operational and digital perspective.

Food safety in production plants depends heavily on hygiene procedures, but not all cleaning processes are equally controllable. Cleaning-in-place systems, or CIP, are generally automated and monitored by software. Open plant cleaning, or OPC, is more manual. It often involves operators using foam systems, satellites, nozzles and rinsing procedures across production areas.

This manual dimension introduces variability. Even well-trained operators may perform the same task differently from one day to another. Contract cleaners, staff turnover and night-shift operations increase uncertainty. A hygiene plan may exist on paper, but the plant manager or quality manager may not always know whether each cleaning step was performed with the correct time, concentration, temperature, water use and chemical dosage.

This is where digital tools become relevant. The goal is not only to clean, but to make cleaning visible, measurable and verifiable.

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Manual Cleaning Insights: making hygiene measurable

Ecolab presented Manual Cleaning Insights, a digital monitoring system designed for surface cleaning operations. Sensors installed in satellites and main stations collect data on key cleaning parameters: time, water, chemistry and air. The data are sent to a controller, then to a cloud platform, where dashboards provide real-time visibility.

For plant managers and quality managers, this creates a 24/7 record of cleaning activities. The system tracks whether operations comply with the hygiene plan, identifies exceptions and allows users to investigate specific areas, satellites, timings or deviations.

This has two levels of value.

The first is immediate operational response. If a cleaning step has not been performed correctly, a responsible person can intervene before production resumes, reducing the risk of cross-contamination or non-compliant conditions.

The second is retrospective traceability. If cleaning is performed overnight, managers can review the results in the morning and understand whether procedures were followed. This reduces reliance on assumptions and manual records.

In a food safety culture increasingly built on evidence, digital monitoring transforms hygiene from an activity that is presumed to have been completed into one that can be demonstrated.

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Digital hygiene, productivity and sustainability

Ecolab’s presentation also connected digital hygiene tools with productivity and sustainability. Better visibility of cleaning processes can help improve food safety and brand reputation, but it can also support resource optimisation.

In membrane cleaning, for example, Ecolab described systems combining enzymatic chemistry with digital modules to reduce cleaning time, extend membrane life and lower water, energy and chemical consumption. In one example, membrane cleaning time was reduced significantly, along with chemistry and resource use.

The company also introduced digital tools for CIP optimisation, including AI-based insights designed to improve efficiency. This direction is important because food safety and sustainability are often presented as separate priorities, while in reality they increasingly overlap. More controlled cleaning can reduce risk while avoiding unnecessary water, energy and chemical use.

The future of hygiene management will likely depend on this balance: safer processes, fewer deviations, better documentation and more efficient use of resources.

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Prevention requires a network

Across the webinar, a single concept connected all the presentations: food safety depends on prevention, and prevention depends on networks.

The official laboratory network identifies hazards, confirms pathogens and supports outbreak management. Public health authorities trace sources, activate alerts and prevent further exposure. Food business operators must apply procedures, monitor processes and maintain traceability. Production environments must be designed to reduce contamination risks. Cleaning and disinfection must be controlled, verified and documented. Operators must be trained, and digital systems can help reduce variability.

When something goes wrong, the response must also be networked. The botulism case required hospital recognition, laboratory testing, epidemiological investigation and national alerts. The staphylococcal outbreak required sample collection, laboratory confirmation and inspection of hygiene and traceability practices. Industrial prevention requires collaboration between suppliers, plant designers, hygiene specialists and quality teams.

Food safety is therefore not a static condition. It is a dynamic system of vigilance.

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Conclusion: food safety is built before the crisis

The webinar made clear that contamination prevention is not achieved by reacting after an outbreak. It is built long before the crisis: in raw-material control, in plant design, in surfaces, in staff training, in validated cleaning procedures, in microbiological criteria, in official controls and in the capacity to detect deviations early.

Recent cases of food poisoning remind the industry that known hazards remain dangerous when procedures are underestimated. Botulism is not a problem of the past. Staphylococcal enterotoxins can still emerge from basic hygiene failures. Cross-contamination can occur when surfaces, tools or operators are not properly managed. And cleaning can become a weak point when it is treated as a routine activity rather than a controlled process.

At the same time, the webinar showed how the food sector is evolving. Official control systems are supported by advanced laboratory methods. Industrial surfaces can be designed to reduce microbial load. Digital tools can monitor cleaning in real time. Hygiene can become measurable, traceable and connected to both safety and sustainability.

Food safety will always depend on people, but people increasingly need systems that help them act correctly, document what they do and respond quickly when something changes. That is where the next frontier lies: not in replacing good hygiene practices, but in making them more reliable, more visible and more integrated across the entire food chain.