Laetiporus sulphureus mycelium was cultivated under sterile conditions in liquid nutrition medium. An ethanolic extract of the biomass (bottle on the left) was subjected to application trials. As shown in the picture, hard candies and jelly gum were dyed successfully with the colorant laetiporic acid.
A detailed description of the procedure and results can be found here:
Bergmann, Pia, et al. “Pilot-scale production of the natural colorant laetiporic acid, its stability and potential applications.” Fermentation 8.12 (2022): 684. https://doi.org/10.3390/fermentation8120684
Pia was the recipient of the IMDI travel grant to the IFFS 2025 in the Canary Islands. Learn more about the symposium here: https://www.mushroomsforcolor.com/ifff/20th-international-fungi-fibre-symposium-spain-2025/