Question

Advantage disadvantage of solid state fermentation

Answer 1

SSF has important advantages and drawbacks due to its physico chemical features, namely, relatively low water activity and formation of significant gradients of temperature, nutrients and products. SSF is also qualitatively different from the conventional submerged fermentation (SmF) process in relation to sporulation and production of enzymes as well as secondary metabolites. Biomass estimation by respirometry and physical measurements such as infrared spectroscopy, pressure drop measurements and image analysis are being for different culture systems. Mass, water and heat balances can be measured accurately and the available data indicate that it is possible to use basic engineering principles to stimulate and characterize the SSF processes. Extrapolation of experimental data can be done on the basis of dimensionless groups related to dispersion and reaction processes. Integration of fermentation and residue disposal is amenable in terns of several commercial products. For example, use of the residue for direct livestock production or composting. The latter could improve the biological properties of the compost. The SSF process has become well understood, according to the rules of bioengineering, biochemistry, microbiology and molecular biology. Microscopic heterogeneity, which was considered as a weakness of SSF, has now become its strength for increasing product yields and appropriately changing the cell physiology. Reduced water level also favours a cleaner industrial operation with low levels of waste water.




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Answer 2

Hi Students,

● Solid state fermentation -

• It is a process involving use of solid medium for the development of microorganisms.

# Advantages -

1. Low cost of required media.
2. High volumetric productivity.
3. Less efflux is generated.
4. Oxygen circulation is very effective.
5. Suitable for bacteria that require low moisture content.

# Disadvantages -

1. Not suitable for bacteria that require high moisture content.
2. Higher impurity is present.
3. Controlling & measuring of parameters is difficult that solid-state fermentation.
4. Slower microbial growth

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