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Fermentation of hemicellulose liquor from Brewer's spent grain using Scheffersomyces stipitis and Pachysolen tannophilus for production of 2G ethanol and xylitol.

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Title: Fermentation of hemicellulose liquor from Brewer's spent grain using Scheffersomyces stipitis and Pachysolen tannophilus for production of 2G ethanol and xylitol.
Authors: Silva, Elizabeth G.1 (AUTHOR), Borges, Alex S.1 (AUTHOR), Maione, Nicole R.1 (AUTHOR), Castiglioni, Gabriel L.2 (AUTHOR), Suarez, Carlos A. G.1 (AUTHOR), Montano, Inti D. C.1 (AUTHOR) inti@ufg.br
Source: Biofuels, Bioproducts & Biorefining. Mar/Apr2020, Vol. 14 Issue 2, p127-137. 11p.
Subject Terms: *Hemicellulose, *Xylose, *Lignocellulose, *Ethanol, *Grain, *Aerobic metabolism, *Fermentation, *Chemical industry
Company/Entity: Society of Chemical Industry (Great Britain)
Abstract: Beer production generates brewer's spent grain as a byproduct. This biomass contains lignin, cellulose, and hemicellulose, and can be used for the production of second‐generation (2G) ethanol and xylitol. For this to be economically viable, fermentable fractions must be used, allowing the conversion of cellulose and hemicellulose to ethanol. This study evaluated the fermentation of hemicellulose liquor from brewer's spent grain (HLBS) in aerobic and oxygen‐ limited conditions using Scheffersomyces stipitis and Pachysolen tannophilus. Results were compared with data obtained in a complex medium (YPX) and a minimal medium (MMX). In aerobic conditions, for S. stipitis in the HLBS medium, μmax = 0.12 h−1, Yethanol/xylose = 0.14 and selectivity for ethanol over xylitol (Sethanol/xylitol) 3.4 gethanol g−1xylitol were obtained. Under oxygen‐limited conditions, Yethanol/xylose = 0.22 and Sethanol/xylitol = 1.17 gethanol g−1xylitol were obtained. For P. tannophilus, under aerobic conditions, the HLBS medium gave μmax = 0.08 h−1, and Yethanol/xylose = 0.005, with selectivity for ethanol over xylitol (Sethanol/xylitol) of 0.12 gethanol g−1xylitol. In oxygen‐limited conditions, Yethanol/xylose = 0.09 and Sethanol/xylitol = 0.20 gethanol g−1xylitol were obtained. This is because the metabolism of these aerobic yeasts directs the carbon flow to cell growth, while with oxygen limitation it is directed to metabolite production. The HLBS medium was promising for production in the context of a biorefinery. When comparing the two yeasts, S. stipitis presented better ethanol production and P. tannophilus better xylitol production under the conditions that were studied. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 142159316
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Fermentation of hemicellulose liquor from Brewer's spent grain using Scheffersomyces stipitis and Pachysolen tannophilus for production of 2G ethanol and xylitol.
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  Data: <searchLink fieldCode="AR" term="%22Silva%2C+Elizabeth+G%2E%22">Silva, Elizabeth G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Borges%2C+Alex+S%2E%22">Borges, Alex S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Maione%2C+Nicole+R%2E%22">Maione, Nicole R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Castiglioni%2C+Gabriel+L%2E%22">Castiglioni, Gabriel L.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Suarez%2C+Carlos+A%2E+G%2E%22">Suarez, Carlos A. G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Montano%2C+Inti+D%2E+C%2E%22">Montano, Inti D. C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> inti@ufg.br</i>
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  Data: <searchLink fieldCode="JN" term="%22Biofuels%2C+Bioproducts+%26+Biorefining%22">Biofuels, Bioproducts & Biorefining</searchLink>. Mar/Apr2020, Vol. 14 Issue 2, p127-137. 11p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Hemicellulose%22">Hemicellulose</searchLink><br />*<searchLink fieldCode="DE" term="%22Xylose%22">Xylose</searchLink><br />*<searchLink fieldCode="DE" term="%22Lignocellulose%22">Lignocellulose</searchLink><br />*<searchLink fieldCode="DE" term="%22Ethanol%22">Ethanol</searchLink><br />*<searchLink fieldCode="DE" term="%22Grain%22">Grain</searchLink><br />*<searchLink fieldCode="DE" term="%22Aerobic+metabolism%22">Aerobic metabolism</searchLink><br />*<searchLink fieldCode="DE" term="%22Fermentation%22">Fermentation</searchLink><br />*<searchLink fieldCode="DE" term="%22Chemical+industry%22">Chemical industry</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Society+of+Chemical+Industry+%28Great+Britain%29%22">Society of Chemical Industry (Great Britain)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Beer production generates brewer's spent grain as a byproduct. This biomass contains lignin, cellulose, and hemicellulose, and can be used for the production of second‐generation (2G) ethanol and xylitol. For this to be economically viable, fermentable fractions must be used, allowing the conversion of cellulose and hemicellulose to ethanol. This study evaluated the fermentation of hemicellulose liquor from brewer's spent grain (HLBS) in aerobic and oxygen‐ limited conditions using Scheffersomyces stipitis and Pachysolen tannophilus. Results were compared with data obtained in a complex medium (YPX) and a minimal medium (MMX). In aerobic conditions, for S. stipitis in the HLBS medium, μmax = 0.12 h−1, Yethanol/xylose = 0.14 and selectivity for ethanol over xylitol (Sethanol/xylitol) 3.4 gethanol g−1xylitol were obtained. Under oxygen‐limited conditions, Yethanol/xylose = 0.22 and Sethanol/xylitol = 1.17 gethanol g−1xylitol were obtained. For P. tannophilus, under aerobic conditions, the HLBS medium gave μmax = 0.08 h−1, and Yethanol/xylose = 0.005, with selectivity for ethanol over xylitol (Sethanol/xylitol) of 0.12 gethanol g−1xylitol. In oxygen‐limited conditions, Yethanol/xylose = 0.09 and Sethanol/xylitol = 0.20 gethanol g−1xylitol were obtained. This is because the metabolism of these aerobic yeasts directs the carbon flow to cell growth, while with oxygen limitation it is directed to metabolite production. The HLBS medium was promising for production in the context of a biorefinery. When comparing the two yeasts, S. stipitis presented better ethanol production and P. tannophilus better xylitol production under the conditions that were studied. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1002/bbb.2072
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 127
    Subjects:
      – SubjectFull: Hemicellulose
        Type: general
      – SubjectFull: Xylose
        Type: general
      – SubjectFull: Lignocellulose
        Type: general
      – SubjectFull: Ethanol
        Type: general
      – SubjectFull: Grain
        Type: general
      – SubjectFull: Aerobic metabolism
        Type: general
      – SubjectFull: Fermentation
        Type: general
      – SubjectFull: Chemical industry
        Type: general
      – SubjectFull: Society of Chemical Industry (Great Britain)
        Type: general
    Titles:
      – TitleFull: Fermentation of hemicellulose liquor from Brewer's spent grain using Scheffersomyces stipitis and Pachysolen tannophilus for production of 2G ethanol and xylitol.
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          Name:
            NameFull: Silva, Elizabeth G.
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            NameFull: Borges, Alex S.
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            NameFull: Maione, Nicole R.
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            NameFull: Castiglioni, Gabriel L.
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            NameFull: Suarez, Carlos A. G.
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            NameFull: Montano, Inti D. C.
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            – D: 01
              M: 03
              Text: Mar/Apr2020
              Type: published
              Y: 2020
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              Value: 1932104X
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              Value: 14
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              Value: 2
          Titles:
            – TitleFull: Biofuels, Bioproducts & Biorefining
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