Cheese cultures are a collection of specific microorganisms used to ferment milk and produce cheese. These microorganisms are primarily lactic acid bacteria but can also include yeasts and molds.
The raw materials for producing cheese cultures are mainly selected strains of lactic acid bacteria like Lactococcus lactis, Lactobacillus, Streptococcus thermophilus, and many others. Some cheeses, like Roquefort or Camembert, also utilize specific molds.
Step-by-step summary of the industrial chemical synthesis process.
- Selection of specific microbial strains with desired properties for milk fermentation.
- Cultivation of the microorganisms under controlled conditions to increase their population.
- Harvesting of the microorganisms and preparation into a format suitable for use in milk, which can be liquid, frozen, or freeze-dried.
- Preservation of the cultures under conditions that maintain their vitality and fermentative activity.
- When used in cheese production, these microorganisms ferment milk sugar (lactose) producing lactic acid and other compounds that influence the cheese's texture, flavor, and aroma.
Cheese cultures are generally in a white powder or cream form when freeze-dried or concentrated. The exact form and color can vary depending on the type of microorganism and the production process.
Commercial Applications
Cheese Production. Cheese cultures are fundamental in producing a wide range of cheeses (1), from soft ones like Brie to aged ones like Parmesan.
Yogurt and Other Dairy Products. Some of the same cultures used for cheese are also employed in the production of yogurt, kefir, and other fermented dairy products.
Probiotics. Some cheese cultures, particularly bifidobacteria and lactobacilli, are also known for their health benefits and are sold as probiotic supplements.
Other Applications
Research. Cheese cultures can be used in scientific research to study fermentation, food microbiology, and the effects of microbes on the dairy industry.
