SCPs Flashcards
Why are fungi used in industry?
Fermentation can turn waste products and useless substances into valuable metabolites and biomass
2 types of fungal cultivation
Submerged fermentation (SmF) and Solid state fermentation (SsF)
2 methods of churning in SmF
Mechanical churner or aeration uplift
Advantages of SmF
Scalability and precise control
Factors affecting fermentation
Temperature, oxygen, waste build up, pH substrate concentration.
Fungi that SmF should be used for
Aspergillus and Fusarium species
Advantages of airlift SmF
Non mechanical mixing, energy efficient, reduced shear stress and high dissolved oxygen levels
Disadvantages of mechanical churners
Mycelium pellets and fibrous mats can form.
Uses for SsF
Enzyme and some antibiotics (eg penicillin)
Limitations of SsF
Very hard to scale up and removing wastes is difficult
What fungi is used in mycoprotein production?
Fusarium venenatum
Advantages of SCP over meat
Not farmed, rich in protein, low in fat, free of cholesterol, contains fibre.
Steps in SCP fermentaion
- Fungal biomass inoculated medium
- Liquid medium at correct parameters and ammonia as nitrogen source
- Parameters kept stable
- Centrifugation and filtration to separate products
- Post fermentation processes
Post SCP fermentation processes
Heat treated (dentures RNA), egg whites added to improve texture, dried/frozen and packaged.
