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Articles by Shubhra Tiwari
Total Records ( 2 ) for Shubhra Tiwari
  Shubhra Tiwari , S.K. Jadhav , Mayuri Sharma and K.L. Tiwari
  Dwindling supplies of petroleum and growing environmental concerns over its use has led to increasing interest in developing biomass as a feedstock for liquid fuels. In particular, bioethanol produced from biomass represents a promising alternative fuel or gasoline extender. Bioethanol is used in vehicles either as a sole fuel or blended with gasoline. As an oxygenated compound, ethanol provides additional oxygen in combustion and hence obtains better combustion efficiency. The main environmental advantages of fuel ethanol are its sustainability in using a renewable resource as a feedstock, thus promoting independence of fossil fuel and maintaining the level of greenhouse gas. Bioethanol can be produced from carbohydrate containing substrates by the process of fermentation. Many microorganisms like bacteria, fungi and yeast involved in bioethanol production. Present study deals with bioethanol production from rotten fruits with inoculation of bacteria isolated from respective fruits. Rotten fruits serve as potential feedstock for bioethanol production due to high sugar content and cost effective substrate. Results indicate that among 5 fruits rotten sapota (Manilkara zapota) produced highest amount of bioethanol 9.40% on 5th day of incubation. Bioethanol can solve the problem of pollution and considered as fuel for future.
  Anshika Pandey , Shubhra Tiwari , S.K. Jadhav and K.L. Tiwari
  Bioethanol is a suitable renewable or alternative energy source and also the potential solution of all the problems related with the environment and energy crisis. Today ethanol derived mainly from glucose or starch sources of agriculture stock. The human demand for food, however, has yet to be met. To solve both the energy and food problems, there has been increasing interest and worldwide studies in producing bioethanol from lignocellulosic substrate. To promote bioethanol production and its uses, it is necessary to reduce the production cost by using cheap substrate viz., lignocellulosic Azolla and also to obtain the suitable microorganisms which provide sufficient fermentation yield. Azolla consisting 15.19±1.35% cellulose can be suitable substrate for bioethanol production by providing pretreatment to Azolla to hydrolyze the polysaccharides which released fermentable sugar. For pretreatment of Azolla, biological pretreatment is suitable as it is economic feasible and no toxic product formed during pretreatment. Klebisella oxytoca and Saccharomyces cerevisiae, both microorganism have the fermentation ability and can utilized for fermenting lignocellulosic substrate.
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