Ensiling as biological pretreatment of grass (Festulolium Hykor)

The effect of composition, dry matter, and inocula on cellulose convertibility

Morten Ambye-Jensen, Katja Salomon Johansen, Thomas Didion, Zsófia Kádár, Jens Ejbye Schmidt, Anne S. Meyer

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Grass biomass is a prospective type of lignocellulosic biomass for bioenergy and fuel production, but the low dry matter in grass at harvest calls for new pretreatment strategies for cellulosic conversion. In this study, ensiling was tested as a biological pretreatment method of the high yielding grass variety Festulolium Hykor. The biomass was harvested in four cuts over a growing season. Three important factors of ensiling: biomass composition, dry matter (DM) at ensiling, and inoculation of lactic acid bacteria, were assessed in relation to subsequent enzymatic cellulose hydrolysis. The organic acid profile after ensilingwas dependant on the composition of the grass and the DM, rather than on the inocula. High levels of organic acids, notably lactic acid, produced during ensiling improved enzymatic cellulose convertibility in the grass biomass. Ensiling of less mature grass gave higher convertibility. Low DM at ensiling (
OriginalsprogEngelsk
TidsskriftBiomass & Bioenergy
Vol/bind58
Sider (fra-til)303-312
ISSN0961-9534
DOI
StatusUdgivet - nov. 2013
Udgivet eksterntJa

Emneord

  • Ensiling
  • Grass
  • Biomass characterisation
  • Enzymatic hydrolysis
  • Cellulose convertibility

Citer dette

Ambye-Jensen, Morten ; Johansen, Katja Salomon ; Didion, Thomas ; Kádár, Zsófia ; Schmidt, Jens Ejbye ; Meyer, Anne S. / Ensiling as biological pretreatment of grass (Festulolium Hykor) : The effect of composition, dry matter, and inocula on cellulose convertibility. I: Biomass & Bioenergy. 2013 ; Bind 58. s. 303-312.
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abstract = "Grass biomass is a prospective type of lignocellulosic biomass for bioenergy and fuel production, but the low dry matter in grass at harvest calls for new pretreatment strategies for cellulosic conversion. In this study, ensiling was tested as a biological pretreatment method of the high yielding grass variety Festulolium Hykor. The biomass was harvested in four cuts over a growing season. Three important factors of ensiling: biomass composition, dry matter (DM) at ensiling, and inoculation of lactic acid bacteria, were assessed in relation to subsequent enzymatic cellulose hydrolysis. The organic acid profile after ensilingwas dependant on the composition of the grass and the DM, rather than on the inocula. High levels of organic acids, notably lactic acid, produced during ensiling improved enzymatic cellulose convertibility in the grass biomass. Ensiling of less mature grass gave higher convertibility. Low DM at ensiling (",
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Ensiling as biological pretreatment of grass (Festulolium Hykor) : The effect of composition, dry matter, and inocula on cellulose convertibility. / Ambye-Jensen, Morten; Johansen, Katja Salomon; Didion, Thomas; Kádár, Zsófia; Schmidt, Jens Ejbye; Meyer, Anne S.

I: Biomass & Bioenergy, Bind 58, 11.2013, s. 303-312.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Ensiling as biological pretreatment of grass (Festulolium Hykor)

T2 - The effect of composition, dry matter, and inocula on cellulose convertibility

AU - Ambye-Jensen, Morten

AU - Johansen, Katja Salomon

AU - Didion, Thomas

AU - Kádár, Zsófia

AU - Schmidt, Jens Ejbye

AU - Meyer, Anne S.

PY - 2013/11

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AB - Grass biomass is a prospective type of lignocellulosic biomass for bioenergy and fuel production, but the low dry matter in grass at harvest calls for new pretreatment strategies for cellulosic conversion. In this study, ensiling was tested as a biological pretreatment method of the high yielding grass variety Festulolium Hykor. The biomass was harvested in four cuts over a growing season. Three important factors of ensiling: biomass composition, dry matter (DM) at ensiling, and inoculation of lactic acid bacteria, were assessed in relation to subsequent enzymatic cellulose hydrolysis. The organic acid profile after ensilingwas dependant on the composition of the grass and the DM, rather than on the inocula. High levels of organic acids, notably lactic acid, produced during ensiling improved enzymatic cellulose convertibility in the grass biomass. Ensiling of less mature grass gave higher convertibility. Low DM at ensiling (

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KW - Biomass characterisation

KW - Enzymatic hydrolysis

KW - Cellulose convertibility

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DO - 10.1016/j.biombioe.2013.08.015

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