Microbes employed include:
* Yeast
** Saccharomyces cerevisiae
** Pichia pastoris
** Candida utilis
** Torulopsis corallina
** Geotrichum candidum 
* Fungi (Mycoprotein)
** Aspergillus oryzae
** Fusarium venenatum
** Sclerotium rolfsii
** Polyporus
** Trichoderma
** Scytalidium acidophilum
* Bacteria
** Rhodobacter capsulatus 
**Methylophilus methylotrophus
**Metylococcus capsulatus
* Algae
** Spirulina (dietary supplement)
** Chlorella