Kluyveromyces marxianus is a species of yeast commonly found in dairy products and various plant materials. It is known for its ability to ferment lactose, making it valuable in the dairy industry for producing products like yogurt and cheese. This yeast can also thrive at higher temperatures compared to other yeast species, which makes it suitable for industrial applications. In addition to its role in food production, Kluyveromyces marxianus is being researched for its potential in biofuel production and waste management. Its ability to convert sugars into ethanol and other valuable compounds highlights its importance in sustainable practices and biotechnological innovations.