Within a food manufacturing facility, hygiene is never a secondary consideration. In industrial yoghurt production and kefir manufacturing, where highly sensitive, nutrient-rich raw materials are processed, even minimal contamination can compromise quality, safety and shelf life.
When thinking about cleaning, attention naturally turns first to the internal production circuits. This is correct, but it’s not enough. Microbiological safety also depends — and in many cases primarily so — on the sanitisation of external surfaces, structures and areas where operators, trolleys and utensils move about. Steam cleaning is today one of the most effective tools for ensuring this level of control, as it combines cleaning power, sanitising action and speed of intervention, with reduced environmental impact.
Hygiene and Control in the Yoghurt Supply Chain
The yoghurt supply chain is complex and involves many consecutive stages: milk reception and storage, heat treatment, homogenisation, starter culture inoculation, pot filling, sealing and handling through to packaging. Every step of yoghurt processing relies on sophisticated machinery operating within dynamic production environments. Here, the product is not the only consideration: there are people, packaging materials, additional ingredients and process air. All can become vectors for contamination.
For this reason, keeping the exteriors of production lines clean is just as critical as maintaining the enclosed processes of industrial yoghurt manufacturing. Milk residues, sugars and cultures can settle on guards, supports, conveyor belts and flooring. Over time, these become ideal breeding grounds for microbial growth. A superficial approach to managing these areas risks compromising the entire quality system.
Critical Points in a Dairy Processing Plant
In a modern dairy processing plant, designed to ensure operational continuity and high throughput, there are numerous zones that do not come into direct contact with the food but nonetheless influence overall hygiene. Consider the supporting structures of filling machines, transparent guards, conveyor belt guides, the external surfaces of tanks, and the transit areas around machinery. These are surfaces that accumulate dirt during the working shift and require frequent, effective yet rapid interventions. The main challenge is reaching these points without flooding the environment or using excessive amounts of detergent. This is where dry saturated steam radically transforms the approach to sanitisation.
Why Steam is Strategic in Yoghurt Production
Yoghurt production takes place in rooms where humidity must be carefully controlled. The traditional use of copious amounts of water can increase drying times and encourage bacterial proliferation in the hours following cleaning. Steam, however, works differently. The heat softens and dissolves organic residues, whilst the minimal amount of condensation facilitates rapid evaporation. This means being able to intervene multiple times a day without negatively impacting productivity.
Furthermore, the power of steam enables it to reach interstices and complex geometries that often escape manual cleaning operations. For those responsible for industrial yoghurt preparation, having a professional steam generator means improving the level of safety without complicating the work for staff.
Surfaces and Hygiene of Yoghurt Processing Equipment
Every piece of yoghurt processing equipment incorporates guards, panels, control buttons and sensors. These are not parts immersed in the product, but they are constantly exposed to the environment and operator activities. During the day, they may receive milk splashes, dust from ingredients or simply contamination from human contact. If not properly treated, they become invisible but hazardous accumulation points.
Steam cleaners enable targeted intervention, avoiding powerful jets and reducing the risk of damaging electronics. The cleaning is more uniform and the machinery maintains a well-kept appearance over time — an important factor during audits and inspections. Moreover, steam proves particularly effective for cleaning stainless steel surfaces, the predominant material in industrial yoghurt production environments: the heat dissolves organic residues, removes fats and helps to rapidly restore optimal hygienic conditions without leaving streaks.
A further advantage concerns temperature-controlled areas. Unlike many traditional methods, steam maintains its effectiveness even in the sanitisation of cold rooms, as it is not compromised by low temperatures and enables sanitisation without introducing excessive moisture or ice formation on surfaces.
Anyone who has the opportunity to see how industrial yoghurt is made immediately notices the speed of the lines and the precision of movements. It is a highly technological system that, between cycles, nonetheless requires moments of hygienic restoration. During flavour changeovers, maintenance or breaks, operators must rapidly remove residues from surrounding areas. Immediate, effective and easy-to-apply solutions are needed. Even in these situations, steam offers a tangible advantage: it acts quickly, dries fast and enables yoghurt production to resume promptly, minimising equipment downtime.
The Evolution of Hygiene in Modern Dairies
Dairies are undergoing a profound transformation. Beyond product quality, customers and regulatory bodies are demanding sustainability, waste reduction and safer working environments. The introduction of steam sanitisation aligns precisely with this direction: it reduces water consumption, limits the use of chemical substances and simplifies effluent management. At the same time, it improves the perception of order and cleanliness — no small factor for corporate image. It is no longer merely a technical choice but a distinctive element of competitiveness. This paradigm shift becomes even more evident when attention turns to fermented products, where microbiological stability is an integral part of the product’s value.
Kefir production presents dynamics similar to yoghurt, but with even greater sensitivity to unwanted contamination. Live cultures require controlled environments, surfaces maintained in impeccable condition and consistent hygiene procedures over time. Thorough equipment sanitisation helps preserve the microbiological balance and safeguard the final organoleptic characteristics. Steam, thanks to its high temperature and absence of chemical residues, fits perfectly into this requirement: it guarantees effectiveness, speed of intervention and respect for the production process.
Integration into Dairy Processing Plant Protocols
Quality managers at dairy processing plants must be able to demonstrate that every procedure is under control. Steam represents a repeatable and easily standardised technology that can be simply integrated into self-monitoring plans.
Some operational best practices for industrial facilities include:
- Defining precise intervention frequencies;
- Training operators on the correct use of equipment;
- Periodically verifying the results achieved.
These actions help maintain a high level of safety and enable businesses to face any inspections of their industrial yoghurt production facility with confidence, helping companies to work better and with greater peace of mind.
Improve the Sanitisation of Your Production Lines with STI Steam Industry!
The industrial steam cleaners developed by STI Steam Industry are designed to support food manufacturers such as those involved in industrial yoghurt production and kefir manufacturing. They enable rapid, safe and sustainable intervention on machinery and external surfaces, helping to strengthen the overall effectiveness of hygiene protocols. Our Gaiser 18000 model is ideal for this type of application.
Alongside steam generators, STI also offers steam cleaners with integrated vacuum, particularly useful when dissolved dirt and residues need to be removed immediately. This way, the surface is not only thermally treated but is immediately clean, dry and ready for return to production. The vacuum function reduces downtime, limits the dispersal of contaminants into the environment and improves the organisation of end-of-shift or product changeover operations. In this case, the Comby 9000 is the ideal model for efficient results.
You can request technical information, consult with the specialists at STI Steam Industry or receive a quote tailored to your facility’s requirements. If you’re looking to the future and wish to expand your business, dedicated programmes for distributors and partners are available.
FAQ — Sanitisation of Yoghurt Production Equipment with Steam
High-temperature dry saturated steam enables the removal of organic residues and reduction of bacterial load on the external surfaces of machinery, significantly limiting the use of chemical detergents and rinsing times. This approach also reduces costs associated with purchasing and disposing of chemical products, simplifying the overall management of cleaning operations without compromising hygienic effectiveness.
Yes, steam is ideal for treating guards, supporting structures, protective panels and operational areas because it sanitises in depth without flooding the environment or damaging electronic components or water-sensitive parts. Thanks to the minimal condensation produced by dry saturated steam, surfaces dry quickly, reducing downtime and enabling production to resume promptly. It is also particularly effective on stainless steel surfaces, the predominant material in dairy processing plants, removing organic residues and fats without leaving streaks.
The frequency depends on the facility’s HACCP plan and the intensity of the production cycle. As a general guideline, steam lends itself to daily interventions at end of shift, during product or flavour changeovers, and during scheduled maintenance. The speed of use and simplicity of operations enable frequent interventions to be planned without negative impacts on productivity, making it a flexible tool compatible with any self-monitoring plan.
Absolutely. Kefir production is even more sensitive than yoghurt to unwanted contamination, as live cultures require microbiologically stable environments and surfaces maintained in impeccable condition. Steam, thanks to its high temperature and the absence of chemical residues on treated surfaces, fits perfectly into this context: it guarantees sanitising effectiveness, speed of
intervention and full respect for the production process, helping to preserve the microbiological balance of the cultures and the organoleptic characteristics of the final product.
Yes, unlike many traditional methods, steam maintains its effectiveness even at low temperatures, making it suitable for sanitising the cold rooms present in yoghurt and kefir production plants. It does not introduce excessive moisture or risk of ice formation on surfaces, and enables targeted intervention without compromising the cold chain in surrounding areas.
Yes, steam sanitisation is a repeatable and easily standardised technology that can be simply integrated into existing self-monitoring plans. It is possible to define precise intervention frequencies, train staff on the correct use of equipment and document the operations carried out, making the entire process verifiable and traceable. This facilitates inspection management and helps maintain a high level of compliance with the hygiene standards required in the dairy sector.
