Maize feedstocks with improved digestibility reduce the costs and environmental impacts of biomass pretreatment and saccharification

A.F. Torres Salvador, Ellen Slegers, C.M.M. Noordam-Boot, O. Dolstra, L. Vlaswinkel, A.J.B. van Boxtel, R.G.F. Visser, L.M. Trindade

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Abstract

Background - Despite the recognition that feedstock composition influences biomass conversion efficiency, limited information exists as to how bioenergy crops with reduced recalcitrance can improve the economics and sustainability of cellulosic fuel conversion platforms. We have compared the bioenergy potential—estimated as total glucose productivity per hectare (TGP)—of maize cultivars contrasting for cell wall digestibility across processing conditions of increasing thermochemical severity. In addition, exploratory environmental impact and economic modeling were used to assess whether the development of bioenergy feedstocks with improved cell wall digestibility can enhance the environmental performance and reduce the costs of biomass pretreatment and enzymatic conversion.
Results - Systematic genetic gains in cell wall degradability can lead to significant advances in the productivity (TGP) of cellulosic fuel biorefineries under low severity processing; only if gains in digestibility are not accompanied by substantial yield penalties. For a hypothetical maize genotype combining the best characteristics available in the evaluated cultivar panel, TGP under mild processing conditions (~3.7 t ha−1) matched the highest realizable yields possible at the highest processing severity. Under this scenario, both, the environmental impacts and processing costs for the pretreatment and enzymatic saccharification of maize stover were reduced by 15 %, given lower chemical and heat consumption.
Conclusions - Genetic improvements in cell wall composition leading to superior cell wall digestibility can be advantageous for cellulosic fuel production, especially if “less severe” processing regimes are favored for further development. Exploratory results indicate potential cost and environmental impact reductions for the pretreatment and enzymatic saccharification of maize feedstocks exhibiting higher cell wall degradability. Conceptually, these results demonstrate that the advance of bioenergy cultivars with improved biomass degradability can enhance the performance of currently available biomass-to-ethanol conversion systems.
Original languageEnglish
Article number63
Number of pages15
JournalBiotechnology for Biofuels
Volume9
DOIs
Publication statusPublished - 2016

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Saccharification
digestibility
Biomass
Cell Wall
Feedstocks
Zea mays
Environmental impact
environmental impact
maize
Cells
bioenergy
Costs and Cost Analysis
biomass
Processing
cost
Costs
cultivar
Productivity
Economics
productivity

Cite this

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title = "Maize feedstocks with improved digestibility reduce the costs and environmental impacts of biomass pretreatment and saccharification",
abstract = "Background - Despite the recognition that feedstock composition influences biomass conversion efficiency, limited information exists as to how bioenergy crops with reduced recalcitrance can improve the economics and sustainability of cellulosic fuel conversion platforms. We have compared the bioenergy potential—estimated as total glucose productivity per hectare (TGP)—of maize cultivars contrasting for cell wall digestibility across processing conditions of increasing thermochemical severity. In addition, exploratory environmental impact and economic modeling were used to assess whether the development of bioenergy feedstocks with improved cell wall digestibility can enhance the environmental performance and reduce the costs of biomass pretreatment and enzymatic conversion.Results - Systematic genetic gains in cell wall degradability can lead to significant advances in the productivity (TGP) of cellulosic fuel biorefineries under low severity processing; only if gains in digestibility are not accompanied by substantial yield penalties. For a hypothetical maize genotype combining the best characteristics available in the evaluated cultivar panel, TGP under mild processing conditions (~3.7 t ha−1) matched the highest realizable yields possible at the highest processing severity. Under this scenario, both, the environmental impacts and processing costs for the pretreatment and enzymatic saccharification of maize stover were reduced by 15 {\%}, given lower chemical and heat consumption.Conclusions - Genetic improvements in cell wall composition leading to superior cell wall digestibility can be advantageous for cellulosic fuel production, especially if “less severe” processing regimes are favored for further development. Exploratory results indicate potential cost and environmental impact reductions for the pretreatment and enzymatic saccharification of maize feedstocks exhibiting higher cell wall degradability. Conceptually, these results demonstrate that the advance of bioenergy cultivars with improved biomass degradability can enhance the performance of currently available biomass-to-ethanol conversion systems.",
author = "{Torres Salvador}, A.F. and Ellen Slegers and C.M.M. Noordam-Boot and O. Dolstra and L. Vlaswinkel and {van Boxtel}, A.J.B. and R.G.F. Visser and L.M. Trindade",
year = "2016",
doi = "10.1186/s13068-016-0479-0",
language = "English",
volume = "9",
journal = "Biotechnology for Biofuels",
issn = "1754-6834",
publisher = "Springer Verlag",

}

Maize feedstocks with improved digestibility reduce the costs and environmental impacts of biomass pretreatment and saccharification. / Torres Salvador, A.F.; Slegers, Ellen; Noordam-Boot, C.M.M.; Dolstra, O.; Vlaswinkel, L.; van Boxtel, A.J.B.; Visser, R.G.F.; Trindade, L.M.

In: Biotechnology for Biofuels, Vol. 9, 63, 2016.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Maize feedstocks with improved digestibility reduce the costs and environmental impacts of biomass pretreatment and saccharification

AU - Torres Salvador, A.F.

AU - Slegers, Ellen

AU - Noordam-Boot, C.M.M.

AU - Dolstra, O.

AU - Vlaswinkel, L.

AU - van Boxtel, A.J.B.

AU - Visser, R.G.F.

AU - Trindade, L.M.

PY - 2016

Y1 - 2016

N2 - Background - Despite the recognition that feedstock composition influences biomass conversion efficiency, limited information exists as to how bioenergy crops with reduced recalcitrance can improve the economics and sustainability of cellulosic fuel conversion platforms. We have compared the bioenergy potential—estimated as total glucose productivity per hectare (TGP)—of maize cultivars contrasting for cell wall digestibility across processing conditions of increasing thermochemical severity. In addition, exploratory environmental impact and economic modeling were used to assess whether the development of bioenergy feedstocks with improved cell wall digestibility can enhance the environmental performance and reduce the costs of biomass pretreatment and enzymatic conversion.Results - Systematic genetic gains in cell wall degradability can lead to significant advances in the productivity (TGP) of cellulosic fuel biorefineries under low severity processing; only if gains in digestibility are not accompanied by substantial yield penalties. For a hypothetical maize genotype combining the best characteristics available in the evaluated cultivar panel, TGP under mild processing conditions (~3.7 t ha−1) matched the highest realizable yields possible at the highest processing severity. Under this scenario, both, the environmental impacts and processing costs for the pretreatment and enzymatic saccharification of maize stover were reduced by 15 %, given lower chemical and heat consumption.Conclusions - Genetic improvements in cell wall composition leading to superior cell wall digestibility can be advantageous for cellulosic fuel production, especially if “less severe” processing regimes are favored for further development. Exploratory results indicate potential cost and environmental impact reductions for the pretreatment and enzymatic saccharification of maize feedstocks exhibiting higher cell wall degradability. Conceptually, these results demonstrate that the advance of bioenergy cultivars with improved biomass degradability can enhance the performance of currently available biomass-to-ethanol conversion systems.

AB - Background - Despite the recognition that feedstock composition influences biomass conversion efficiency, limited information exists as to how bioenergy crops with reduced recalcitrance can improve the economics and sustainability of cellulosic fuel conversion platforms. We have compared the bioenergy potential—estimated as total glucose productivity per hectare (TGP)—of maize cultivars contrasting for cell wall digestibility across processing conditions of increasing thermochemical severity. In addition, exploratory environmental impact and economic modeling were used to assess whether the development of bioenergy feedstocks with improved cell wall digestibility can enhance the environmental performance and reduce the costs of biomass pretreatment and enzymatic conversion.Results - Systematic genetic gains in cell wall degradability can lead to significant advances in the productivity (TGP) of cellulosic fuel biorefineries under low severity processing; only if gains in digestibility are not accompanied by substantial yield penalties. For a hypothetical maize genotype combining the best characteristics available in the evaluated cultivar panel, TGP under mild processing conditions (~3.7 t ha−1) matched the highest realizable yields possible at the highest processing severity. Under this scenario, both, the environmental impacts and processing costs for the pretreatment and enzymatic saccharification of maize stover were reduced by 15 %, given lower chemical and heat consumption.Conclusions - Genetic improvements in cell wall composition leading to superior cell wall digestibility can be advantageous for cellulosic fuel production, especially if “less severe” processing regimes are favored for further development. Exploratory results indicate potential cost and environmental impact reductions for the pretreatment and enzymatic saccharification of maize feedstocks exhibiting higher cell wall degradability. Conceptually, these results demonstrate that the advance of bioenergy cultivars with improved biomass degradability can enhance the performance of currently available biomass-to-ethanol conversion systems.

U2 - 10.1186/s13068-016-0479-0

DO - 10.1186/s13068-016-0479-0

M3 - Article

VL - 9

JO - Biotechnology for Biofuels

JF - Biotechnology for Biofuels

SN - 1754-6834

M1 - 63

ER -