Impact of cationic polyelectrolyte on the nanoshear hybrid alkaline pretreatment of corn stover: Morphology and saccharification study

Shaowen Ji, Ilsoon Lee

    Research output: Contribution to journalArticle

    • 4 Citations

    Abstract

    Cationic polyelectrolyte was first used as the additive in the nanoshear hybrid alkaline pretreatment of corn stover. The novel nanoshear hybrid pretreatment process was recently developed at MSU. The chemical compositions and morphologies were investigated by SEM, TEM, confocal CLSM, and XPS to elucidate the degradation mechanism of cellular structures. At room temperature and fast processing conditions (∼2. min), lignin was found to redistribute on the inner and outer surfaces of the cell wall as lignin aggregate droplets instead of being extracted. Free microfibrils in the residues were also observed. The yields of enzymatic hydrolysis were enhanced for the pretreated corn stover with the aid of polyelectrolyte as an additive. We speculate that lignin was effectively modified which opened up the cell wall structure during the short pretreatment process and prevented non-productive binding of enzymes in the enzyme hydrolysis reaction.

    Original languageEnglish (US)
    Pages (from-to)45-50
    Number of pages6
    JournalBioresource Technology
    Volume133
    DOIs
    StatePublished - Apr 2013

    Profile

    Magnesium Deficiency
    Polyelectrolytes
    Lignin
    lignin
    maize
    Octanols
    Castration
    Enzymes
    Cells
    hydrolysis
    enzyme
    Avian Crop
    Edema Disease of Swine
    Acetanilides
    African horse sickness virus
    Dental Staff
    Alcuronium
    4-Aminobutyrate Transaminase
    Accessory Nerve
    Social Isolation

    Keywords

    • Additives
    • Biomass pretreatment
    • Enzymatic hydrolysis
    • Lignin redistribution
    • Polyelectrolyte

    ASJC Scopus subject areas

    • Bioengineering
    • Environmental Engineering
    • Waste Management and Disposal

    Cite this

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    abstract = "Cationic polyelectrolyte was first used as the additive in the nanoshear hybrid alkaline pretreatment of corn stover. The novel nanoshear hybrid pretreatment process was recently developed at MSU. The chemical compositions and morphologies were investigated by SEM, TEM, confocal CLSM, and XPS to elucidate the degradation mechanism of cellular structures. At room temperature and fast processing conditions (∼2. min), lignin was found to redistribute on the inner and outer surfaces of the cell wall as lignin aggregate droplets instead of being extracted. Free microfibrils in the residues were also observed. The yields of enzymatic hydrolysis were enhanced for the pretreated corn stover with the aid of polyelectrolyte as an additive. We speculate that lignin was effectively modified which opened up the cell wall structure during the short pretreatment process and prevented non-productive binding of enzymes in the enzyme hydrolysis reaction.",
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