What is the purpose of antifungal additives in jet fuel?

Antifungal additives in jet fuel are specifically used to minimize microbial growth. In aviation fuel systems, especially in storage and transportation, conditions can be conducive to the growth of microbes and fungi. These microorganisms thrive in the water phase that can accumulate in fuel tanks and can create biological slimes. Their presence can lead to several issues, including blockages in fuel filters, corrosion of storage equipment, and compromised fuel quality.

By incorporating antifungal additives, the fuel is protected from microbial contamination, ensuring the integrity and reliability of the fuel system. This contributes to the overall safety and performance of the aircraft, as any kind of microbial growth can potentially lead to engine malfunctions or failures.