Continuous addition of sugar in 'fed batch' fermentation is done to_______.

When the aim of large-scale fermentation is to obtain a certain enzyme then first we culture a particular microbe or cell up to a certain level and then we purify the enzyme from culture through the downstream process. So in this case concentration of enzyme one can purify is directly proportional to microbial growth. Fed-batch fermentation is very useful for bioprocesses when the desired product is positively correlated with microbial growth. This process is now also used in the production of antibiotics and recombinant proteins.