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Extraction of Residual Sugars from Sweet Pearl Millet and Sweet Sorghum Bagasse for an Eventual Production of Bioethanol

Author

Listed:
  • Saïed, Noura

    (Université Laval, Quebec, Canada)

  • Khelifi, Mohamed

    (Université Laval, Quebec, Canada)

  • Aider, Mohammed

    (Université Laval, Quebec, Canada)

  • Bertrand, Annic

    (Agriculture and Agri-Food Canada, Quebec, Canada)

Abstract

Bioethanol represents a promising alternative to gasoline given that fossil fuels reserves are witnessing an important depletion in the last few years. This paper addresses improving sugars extraction from two energy crops, sweet sorghum and sweet pearl millet, for an eventual production of ethanol. The stalks of these C4 plants are indeed rich of fermentable sugars essentially sucrose, fructose, and glucose. After being finely chopped, the biomass was pressed with a hydraulic press and the obtained bagasse was pressed again to extract residual sugars. The bagasse was first humidified either with the juice obtained from the first pressing or with water (ratio 1:1 w/w). Thereafter, the wetted bagasse was pressed immediately, after 30 minutes or after 60 minutes. For both crops, results showed that the humidification's duration has no effect on the extraction of residual sugars from the bagasse. The use of water was however more efficient then recycling the first pressing's juice. Indeed, additional 33.4 and 29% of the total fermentable sugars were extracted from sweet sorghum and sweet pearl millet bagasse, respectively, when using water.

Suggested Citation

  • Saïed, Noura & Khelifi, Mohamed & Aider, Mohammed & Bertrand, Annic, 2015. "Extraction of Residual Sugars from Sweet Pearl Millet and Sweet Sorghum Bagasse for an Eventual Production of Bioethanol," International Journal of Applied and Physical Sciences, Dr K.Vivehananthan, vol. 1(1), pages 14-18.
    • Handle: RePEc:apa:ijapss:2015:p:14-18
    DOI: 10.20469/IJAPS.50002
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    References listed on IDEAS

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    1. Basavaraj, G. & Parthasarathy Rao, P. & Basu, Kaushik & Reddy, Ch Ravinder & Kumar, A. Ashok & Srinivasa Rao, P. & Reddy, B.V.S., 2013. "Assessing viability of bio-ethanol production from sweet sorghum in India," Energy Policy, Elsevier, vol. 56(C), pages 501-508.
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