A study on production of bioethanol from Solanum nigrum L. fruit

摘要

Bioethanol is one of the best biofuel and alternate for geologically produced fuel. Bioethanol is produced by microorganisms on suitable carbohydrate sources in the absence of oxygen called anaerobic fermentation. The carbohydrate sources in waste material is very much useful in two ways, one is for the remediation of waste and another is to get high percentage of biofuel. So in the present study Solanum nigrum L. fruit - a common weed found in agricultural fields were selected to produce bioethanol from selected microorganisms. The experiment was set in two levels, in level 1 - use of cultures of Saccharomyces cerevisiae and yeast culture isolated from spoiled S. nirum L. fruits to single substrate S. nirum L. fruits. In level 2 - use of cultures of Saccharomyces cerevisiae and yeast culture isolated from spoiled S. nirum L. fruits to two separate substrates contains spoiled fruits and S. nirum L. fruits. From the above study it was observed that in level 1 experiment about 8.5% of bioethanol production was recorded and in level 2 4.3% of bioethanol was recorded. From this study it was recorded that the best suitable microorganisms in the production bioethanol is the S. cerevisiae for S. nigrum L. fruits.