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      Evaluation of Paecilomyces variotii potential in bioethanol production from lignocellulose through consolidated bioprocessing.

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          Abstract

          The ascomycete Paecillomyces variotii was evaluated for the first time as a candidate species for the production of bioethanol from lignocellulose through consolidated bioprocessing (CBP) approaches. The examined strain (ATHUM 8891) revealed all the necessary phenotypic characteristics required for 2nd generation biofuel production. The fungus is able to efficiently ferment glucose and xylose to ethanol, with yields close to the theoretical maximum. Nitrogen supplementation greatly affected ethanol production with nitrate-nitrogen presenting the best results. Notably, ethanol yield on xylose fermentation was higher than that of glucose, while in co-fermentation of glucose-xylose mixtures no distinguished diauxic behavior was observed. Furthermore, the fungus seems to possess the necessary enzyme factory for the degradation of lignocellulosic biomass, as it was able to grow and produce ethanol on common agro-industrial derivatives. Overall, the results of our study indicate that P. variotii is a new and possibly powerful candidate for CBP applications.

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          Author and article information

          Journal
          Bioresour. Technol.
          Bioresource technology
          Elsevier BV
          1873-2976
          0960-8524
          Jun 2014
          : 162
          Affiliations
          [1 ] Microbial Biotechnology Unit, Sector of Botany, Department of Biology, National and Kapodistrian University of Athens, University Campus, 15784 Zografou, Attica, Greece.
          [2 ] Microbial Biotechnology Unit, Sector of Botany, Department of Biology, National and Kapodistrian University of Athens, University Campus, 15784 Zografou, Attica, Greece. Electronic address: dhatzini@biol.uoa.gr.
          Article
          S0960-8524(14)00442-8
          10.1016/j.biortech.2014.03.137
          24759646
          1b285555-2e96-4300-bed7-16fcfe526fb1
          History

          Glucose and xylose fermentation,Consolidated bioprocessing,Bioethanol,Paecilomyces variotii,Lignocellulose

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