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Bioethanol from hydrolyzed Spirulina biomass using ethanologenic bacteria


Photosynthetic microalgae are considered excellent feedstock for biofuel production in developing biomass production technologies. Recently, prof. Rosana Schneider and his coworkers at University of Santa Cruz do Sul (UNISC, Brazil) conducted a study to evaluate ethanol production with the sequential enzymatic saccharification and fermentation of Spirulina (Arthrospira platensis) biomass with the metabolically engineered Escherichia coli strain MS04. Spirulina was cultivated semi-continuously in an open raceway pond, and the carbohydrate content determined was as high as 40%. After 40 h enzymatic saccharification, 27 g L−1 of monosaccharides was obtained. These slurries were fermented with ethanologenic bacteria, achieving 12.7 g L−1 ethanol after 9 h fermentation, corresponding to 160 L ethanol per metric ton of dry biomass with a high productivity (1.4 gEtOH⋅L−1⋅h−1).

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Bioresources and Bioprocessing (BIOB) is a peer-reviewed open access journal published under the brand SpringerOpen. BIOB aims at providing an international academic platform for exchanging views on and promoting research to support bioresource development, processing and utilization in a sustainable manner. As an application-oriented research journal, BIOB covers not only the application and management of bioresource technology but also the design and development of bioprocesses that will lead to new and sustainable production processes.

BIOB publishes original and review articles on most topics relating to bioresource and bioprocess engineering, including:

  • Biochemical and microbiological engineering
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  • Biosynthesis and metabolic engineering
  • Bioprocess and biosystems engineering
  • Bioenergy and biorefinery
  • Cell culture and biomedical engineering
  • Food, agricultural and marine biotechnology
  • Bioseparation and biopurification engineering
  • Bioremediation and environmental biotechnology

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