Comparative Studies of Saccharomyces cerevisiae MTCC 4780 and Pichia kudriavzevii for Bioethanol Production Using Sal (Shorea robusta) Seeds

The most valuable bioenergy source today is bioethanol, which is produced by fermentation of sugar, starch or cellulose containing biomass using various microorganisms. Bioethanol represents closed carbon dioxide cycle, after burning of bioethanol, the released carbon dioxide is recycled back into plant material because plants use carbon dioxide to synthesise carbohydrates during photosynthesis; therefore, no net carbon dioxide is added to the atmosphere, thus making bioethanol an environment-friendly energy source. Different substrates play an important role in bioethanol production process. In the present study, sal seed was used as a carbohydrate source with Saccharomyces cerevisiae MTCC 4780 and Pichia kudriavzevii for bioethanol production and parameters which play an important role in fermentation were also optimised.