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Bioethanol Production from Industrial Paper Wastes Using Native Strains of Saccharomyces cerevisiae

Reema Ningthoujam and Harish Kumar Dhingra
Department of Biosciences, School of Liberal Arts and Sciences (SLAS), Mody University of Science and Technology,
Lakshmangarh-332 311, Sikar (Rajasthan), India
*(e-mail :; Mobile : 9461536233)
(Received : December 8, 2020; Accepted : February 10, 2021)


A variety of waste materials can act as a substrate for the production of bioethanol by Saccharomyces cerevisiae. Currently, bioethanol is produced from sugar or starch-based raw materials that are scarce. The ethanol produced from the cellulosic wastes at the cheaper cost will be a great advantage to the oil companies in producing blended petrol at a cheaper price. The cellulosic wastes like industrial paper wastes, which otherwise create lots of environmental pollution on burning, have been successfully used as a substrate for bioethanol production in this experimental study. This work utilized industrial paper waste as a substrate for ethanol production. It was found that bioethanol production was greatly influenced by the culture conditions and media components. The potential strains were isolated from over-ripened fruits such as apples, plums, grapes, etc. The incubation period of 32 h and maintaining the temperature and pH at 27°C and 4, respectively, was found optimum for maximum bioethanol production. Ethanol production was measured after a week of fermentation with S. cerevisiae; and the highest yield of ethanol was found to be 15.6%.
Key words : Yeasts, ethanol, blending, substrate, fermentation