Topic overview

Start with the big picture

A useful way to study commercial fungi is to connect each organism with its characteristic role. Saccharomyces cerevisiae supports bread-making, alcoholic fermentation, bioethanol production and recombinant vaccine production. Aspergillus species provide citric acid and food-processing enzymes, while Penicillium chrysogenum is associated with industrial penicillin production. Other examples span medicines, foods and applied biology: Tolypocladium inflatum produces cyclosporine; Claviceps purpurea yields ergot alkaloids; and Penicillium species contribute to cheese ripening. Fungi are also used for enzymes, mycoprotein, biopesticides, nutraceuticals and edible mushrooms. The central study task is to distinguish the organisms by their best-known product or application, rather than treating fungal industrial uses as a single category.