Corn stover ethanol yield as affected by grain yield, Bt trait, and environment

Pavani Tumbalam, Kurt D. Thelen, Andrew Adkins, Bruce Dale, Venkatesh Balan, Christa Gunawan, Juan Gao

    Research output: Contribution to journalArticle

    • 6 Citations

    Abstract

    Literature values for glucose release from corn stover are highly variable which would likely result in tremendous variability in bio-refinery ethanol yield from corn stover feedstock. A relatively recent change in United States corn genetics is the inclusion of the Bacillus thuringiensis (Bt) trait, which now accounts for three-fourths of all US planted corn acreage. The objective of this study was to evaluate the effect of corn grain yield, inclusion of the Bt trait, and location environment on corn stover quality for subsequent ethanol conversion. Two hybrid pairs (each having a Bt and non-Bt near-isoline) were analyzed giving a total of 4 hybrids. In 2010 and 2011, field plots were located in Michigan at four latitudinal differing locations in four replicated plots at each location. Stover composition and enzymatic digestibility was analyzed and estimated ethanol yield (g g-1) was calculated based on hydrolyzable glucan and xylan levels. Analysis showed that there were no significant differences in total glucose or xylose levels nor in enzymatically hydrolyzable glucan and xylan concentrations between Bt corn stover and the non-Bt stover isolines. Regression analyses between corn grain yield (Mg ha-1) and corn stover ethanol yield (g g-1) showed an inverse relationship indicative of a photosynthate source-sink relationship. Nevertheless, the quantity of stover produced was found to be more critical than the quality of stover produced in maximizing potential stover ethanol yield on a land area basis.

    Original languageEnglish (US)
    Pages (from-to)119-125
    Number of pages7
    JournalBiomass and Bioenergy
    Volume85
    DOIs
    StatePublished - Feb 1 2016

    Profile

    corn stover
    ethanol
    Ethanol
    maize
    stover
    Bacillus thuringiensis
    Bacilli
    corn
    grain yield
    xylan
    isogenic lines
    glucans
    glucose
    Glucose
    source-sink relationships
    photosynthates
    enzymatic hydrolysis
    feedstocks
    xylose
    Xylose

    Keywords

    • Bioenergy
    • Bioethanol
    • Biofuels
    • Bt trait
    • Corn stover
    • Lignocellulosic ethanol

    ASJC Scopus subject areas

    • Agronomy and Crop Science
    • Forestry
    • Renewable Energy, Sustainability and the Environment
    • Waste Management and Disposal

    Cite this

    Corn stover ethanol yield as affected by grain yield, Bt trait, and environment. / Tumbalam, Pavani; Thelen, Kurt D.; Adkins, Andrew; Dale, Bruce; Balan, Venkatesh; Gunawan, Christa; Gao, Juan.

    In: Biomass and Bioenergy, Vol. 85, 01.02.2016, p. 119-125.

    Research output: Contribution to journalArticle

    Tumbalam, Pavani; Thelen, Kurt D.; Adkins, Andrew; Dale, Bruce; Balan, Venkatesh; Gunawan, Christa; Gao, Juan / Corn stover ethanol yield as affected by grain yield, Bt trait, and environment.

    In: Biomass and Bioenergy, Vol. 85, 01.02.2016, p. 119-125.

    Research output: Contribution to journalArticle

    @article{1336003e757d482caa0f5677506d57bc,
    title = "Corn stover ethanol yield as affected by grain yield, Bt trait, and environment",
    abstract = "Literature values for glucose release from corn stover are highly variable which would likely result in tremendous variability in bio-refinery ethanol yield from corn stover feedstock. A relatively recent change in United States corn genetics is the inclusion of the Bacillus thuringiensis (Bt) trait, which now accounts for three-fourths of all US planted corn acreage. The objective of this study was to evaluate the effect of corn grain yield, inclusion of the Bt trait, and location environment on corn stover quality for subsequent ethanol conversion. Two hybrid pairs (each having a Bt and non-Bt near-isoline) were analyzed giving a total of 4 hybrids. In 2010 and 2011, field plots were located in Michigan at four latitudinal differing locations in four replicated plots at each location. Stover composition and enzymatic digestibility was analyzed and estimated ethanol yield (g g-1) was calculated based on hydrolyzable glucan and xylan levels. Analysis showed that there were no significant differences in total glucose or xylose levels nor in enzymatically hydrolyzable glucan and xylan concentrations between Bt corn stover and the non-Bt stover isolines. Regression analyses between corn grain yield (Mg ha-1) and corn stover ethanol yield (g g-1) showed an inverse relationship indicative of a photosynthate source-sink relationship. Nevertheless, the quantity of stover produced was found to be more critical than the quality of stover produced in maximizing potential stover ethanol yield on a land area basis.",
    keywords = "Bioenergy, Bioethanol, Biofuels, Bt trait, Corn stover, Lignocellulosic ethanol",
    author = "Pavani Tumbalam and Thelen, {Kurt D.} and Andrew Adkins and Bruce Dale and Venkatesh Balan and Christa Gunawan and Juan Gao",
    year = "2016",
    month = "2",
    doi = "10.1016/j.biombioe.2015.12.004",
    volume = "85",
    pages = "119--125",
    journal = "Biomass and Bioenergy",
    issn = "0961-9534",
    publisher = "Elsevier Limited",

    }

    TY - JOUR

    T1 - Corn stover ethanol yield as affected by grain yield, Bt trait, and environment

    AU - Tumbalam,Pavani

    AU - Thelen,Kurt D.

    AU - Adkins,Andrew

    AU - Dale,Bruce

    AU - Balan,Venkatesh

    AU - Gunawan,Christa

    AU - Gao,Juan

    PY - 2016/2/1

    Y1 - 2016/2/1

    N2 - Literature values for glucose release from corn stover are highly variable which would likely result in tremendous variability in bio-refinery ethanol yield from corn stover feedstock. A relatively recent change in United States corn genetics is the inclusion of the Bacillus thuringiensis (Bt) trait, which now accounts for three-fourths of all US planted corn acreage. The objective of this study was to evaluate the effect of corn grain yield, inclusion of the Bt trait, and location environment on corn stover quality for subsequent ethanol conversion. Two hybrid pairs (each having a Bt and non-Bt near-isoline) were analyzed giving a total of 4 hybrids. In 2010 and 2011, field plots were located in Michigan at four latitudinal differing locations in four replicated plots at each location. Stover composition and enzymatic digestibility was analyzed and estimated ethanol yield (g g-1) was calculated based on hydrolyzable glucan and xylan levels. Analysis showed that there were no significant differences in total glucose or xylose levels nor in enzymatically hydrolyzable glucan and xylan concentrations between Bt corn stover and the non-Bt stover isolines. Regression analyses between corn grain yield (Mg ha-1) and corn stover ethanol yield (g g-1) showed an inverse relationship indicative of a photosynthate source-sink relationship. Nevertheless, the quantity of stover produced was found to be more critical than the quality of stover produced in maximizing potential stover ethanol yield on a land area basis.

    AB - Literature values for glucose release from corn stover are highly variable which would likely result in tremendous variability in bio-refinery ethanol yield from corn stover feedstock. A relatively recent change in United States corn genetics is the inclusion of the Bacillus thuringiensis (Bt) trait, which now accounts for three-fourths of all US planted corn acreage. The objective of this study was to evaluate the effect of corn grain yield, inclusion of the Bt trait, and location environment on corn stover quality for subsequent ethanol conversion. Two hybrid pairs (each having a Bt and non-Bt near-isoline) were analyzed giving a total of 4 hybrids. In 2010 and 2011, field plots were located in Michigan at four latitudinal differing locations in four replicated plots at each location. Stover composition and enzymatic digestibility was analyzed and estimated ethanol yield (g g-1) was calculated based on hydrolyzable glucan and xylan levels. Analysis showed that there were no significant differences in total glucose or xylose levels nor in enzymatically hydrolyzable glucan and xylan concentrations between Bt corn stover and the non-Bt stover isolines. Regression analyses between corn grain yield (Mg ha-1) and corn stover ethanol yield (g g-1) showed an inverse relationship indicative of a photosynthate source-sink relationship. Nevertheless, the quantity of stover produced was found to be more critical than the quality of stover produced in maximizing potential stover ethanol yield on a land area basis.

    KW - Bioenergy

    KW - Bioethanol

    KW - Biofuels

    KW - Bt trait

    KW - Corn stover

    KW - Lignocellulosic ethanol

    UR - http://www.scopus.com/inward/record.url?scp=84956642627&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84956642627&partnerID=8YFLogxK

    U2 - 10.1016/j.biombioe.2015.12.004

    DO - 10.1016/j.biombioe.2015.12.004

    M3 - Article

    VL - 85

    SP - 119

    EP - 125

    JO - Biomass and Bioenergy

    T2 - Biomass and Bioenergy

    JF - Biomass and Bioenergy

    SN - 0961-9534

    ER -