Abstract
The microorganisms like fungi proliferate in different environmental and ecological conditions depending upon the availability of nutrients and the form of nutrient that they absorb. In addition to this the physical conditions like temperature, pH, salinity and light etc. also effect the growth and biomass production of fungal species. The present study was carried out to determine the effect of variation in physical and chemical parameters on growth and biomass production of the fungal strain Fusarium equiseti (MTCC9658). A maximum biomass yield of 12.24 g/L at pH 5 and temperature of 30ºC was recorded; and minimum of 5.21 g/L at pH 9 and temperature of 25ºC.The observations clearly indicate that pH 9 and above did not support higher biomass production at any of the temperatures,while pH 5 to pH 6 supports higher dry biomass production in all temperature ranges applied.The different carbon and nitrogen sources used in the medium corresponded to variation in growth of the strain. Dextrose in combination with Yeast extract as nitrogen source was best for biomass production.
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