Effect of acetate on fermentation production of butyrate

Adam Jaros, Ulrika Rova, Kris A. Berglund

    Research output: Contribution to journalArticle

    • 4 Citations

    Abstract

    A carbon source for the fermentation production of butyrate is xylose extracted from ligno-cellulosic material by hot water extraction. Although this auto-hydrolysis of hemicellulose can provide a low-cost source of xylose, the process generates a high level of acetic acid that might inhibit subsequent fermentations. This study focuses on the effects of acetate on the production of butyrate from xylose by batch fermentations with a selected strain Clostridium tyrobutyricum. At initial acetate concentrations of 17.6 g L -1 and 26.3 g L -1 in the media, C. tyrobutyricum cultures exhibited a lag phase (45 and 118 hours, respectively) in terms of sugar consumption, butyrate production and cell biomass growth, lowering the overall production rate. Butyrate fermentations performed with high concentrations of acetate in the media demonstrated a re-uptake of acetate into the butyrate production pathway and after the lag phase, all cultures adapted to the inhibitory acetate, which increased the final butyrate yields by 12.6% (32.6 g L -1 compared to 28.5 g L" 1).

    Original languageEnglish (US)
    Pages (from-to)341-347
    Number of pages7
    JournalCellulose Chemistry and Technology
    Volume46
    Issue number5-6
    StatePublished - Jun 2012

    Profile

    Fermentation
    Xylose
    Clostridium
    Acetic acid
    Sugars
    Hydrolysis
    Biomass
    Carbon
    Costs
    Water
    Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)
    Erythrasma
    Panthera
    Speech Disorders
    Traffic Accidents

    Keywords

    • Acetate inhibition
    • Butyrate
    • Clostridium tyrobutyricum
    • Hemicellulose utilization
    • Xylose fermentation

    ASJC Scopus subject areas

    • Materials Chemistry
    • Organic Chemistry

    Cite this

    Effect of acetate on fermentation production of butyrate. / Jaros, Adam; Rova, Ulrika; Berglund, Kris A.

    In: Cellulose Chemistry and Technology, Vol. 46, No. 5-6, 06.2012, p. 341-347.

    Research output: Contribution to journalArticle

    Jaros, Adam; Rova, Ulrika; Berglund, Kris A. / Effect of acetate on fermentation production of butyrate.

    In: Cellulose Chemistry and Technology, Vol. 46, No. 5-6, 06.2012, p. 341-347.

    Research output: Contribution to journalArticle

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