Yeast and Mold in Food: Risks and Control Techniques
The growth of yeast and mold in food poses a challenge for manufacturers. At every stage of production, processing, and packaging, professionals must find effective ways to prevent food contamination. Photoclean explains the characteristics of these microorganisms and presents its solution for eliminating them.
What are food-borne yeasts and molds?
Invisible to the naked eye, these microorganisms play a role in fermentation and decomposition processes. They are ubiquitous in the environment and easily penetrate organic matter—particularly food.
Food contamination by molds and yeasts occurs in three ways:
- through equipment that has not been properly washed or disinfected;
- through contamination of surfaces during handling;
- through spores dispersed in the air.
These microorganisms particularly affect fresh foods: fruits and vegetables, dairy products, baked goods, and pastries… If they begin to grow before the product’s shelf life expires, this poses a problem for the facility in question.
What are the risks associated with mold growth in the food industry?
The proliferation of yeast and mold on food products poses several major problems:
- massive spread of spores, with a single spore capable of indirectly giving rise to thousands of mold colonies;
- rapid growth even under conditions that would normally be unfavorable (dry, nutrient-poor, or highly salty environments);
- difficulty in eradication due to the presence of spores on surfaces, in the air, and in water;
- the ability to spoil food by degrading carbon-based substrates, leading to a loss of visual, taste, and commercial quality;
- a health risk posed by certain species that produce mycotoxins hazardous to human health.
What challenges do molds and yeasts pose for the food industry?
Controlling fungal growth on food is a major challenge for professionals in the industry. To achieve this, manufacturers face a threefold challenge:
- Prevent contamination—and thus the entry of spores into products—by enforcing strict standards governing the cooking and packaging of products, as well as the hygiene of equipment and facilities;
- prevent recontamination—that is, protect the product after processing by identifying critical areas and high-risk handling procedures;
- limit the germination and growth of spores and microorganisms through various means (controlled environments, regulated storage conditions, protective atmospheres, etc.).
Controlling the growth of yeast and mold is particularly important in activities involving food-related microbiology, such as in the cheese industry. This industry uses certain types of molds that give the product its desired characteristics—such as those found in Roquefort—while the presence of other species must be prevented.
How can microorganisms be controlled in facilities of the food industry?
Found in all environments, characterized by rapid growth and a high potential for food spoilage, food-borne yeasts and molds are a major problem for the industry.
Recognizing that purified air creates a healthy environment, Photoclean has developed a customized solution to meet manufacturers’ needs for decontamination in the food industry.
The idea is simple: use UV-C rays to destroy microorganisms present in the air. The challenge is to treat this air continuously, without pressure drop or bulky equipment. To achieve this, Photoclean has combined its UV lamps with a proprietary filter medium that traps contaminants and increases the treatment surface area.
The result is fourfold: optimal air quality, compliance with food industry health standards, effective contamination control, and environmentally friendly operation.
Request an audit of your facilities from PhotoClean.