BACTERIAL GROWTH
Growth of bacteria Bacteria are grown in 2 types BATCH CULTURE AND CONTINUOUS CULTURE BATCH CULTURE : This is the simplest type of culture in which microorganism grow in a vessel known as FERMENTED or BIOREACTOR, with limited amount of medium containing all the nutrients at optimum environment conditions. In both culture growth phases of microorganism passes through many stages. A microbe grows in the medium until the nutrients are exhausted or toxic metabolites secretes by it reach to inhibitory level. From the beginning of inoculation to the end, microbial culture passes through several stages. CONTINUOUS CULTURE: In a continuous culture the growth of the microorganism retards due to depletion of nutrients rather than by accumulation of toxic products. It is presented by addition of fresh medium to the ferments and removal of spent medium and microbial biomass from it as a result of which the experimental phase of culture is extended.