TY - JOUR
T1 - Chemical characterization and hydrothermal pretreatment of Salicornia bigelovii straw for enhanced enzymatic hydrolysis and bioethanol potential
AU - Cybulska, Iwona
AU - Chaturvedi, Tanmay
AU - Brudecki, Grzegorz P.
AU - Kádár, Zsófia
AU - Meyer, Anne S.
AU - Baldwin, Robert M.
AU - Thomsen, Mette Hedegaard
PY - 2014
Y1 - 2014
N2 - Salicornia bigelovii straw was characterized and evaluated as a potential lignocellulosic bioethanol feedstock. S. bigelovii used in the study was grown in the United Arab Emirates using saltwater (40. ppt) for irrigation. Salt removal was performed prior to pretreatment to protect the processing equipment and avoid inhibition of enzymes and yeast. Composition of the washed biomass was comparable to traditional lignocellulosic biomasses with relatively high glucan and xylan content (26 and 22. g/100. gDM, respectively) but with lower lignin content (7. g/100. gDM). The washed feedstock was subjected to hydrothermal pretreatment, producing highly digestible (up to 92% glucan-to-glucose conversion) and fermentable (up to 100% glucose-to-ethanol conversion) fiber fractions. Liquid fractions obtained in the pretreatment did not show inhibition towards Saccharomyces cerevisiae. No significant differences among the enzymatic convertibility and microbial fermentability of the fibers as well as low xylose recoveries suggest that lower severity pretreatment conditions could be exploited for S. bigelovii.
AB - Salicornia bigelovii straw was characterized and evaluated as a potential lignocellulosic bioethanol feedstock. S. bigelovii used in the study was grown in the United Arab Emirates using saltwater (40. ppt) for irrigation. Salt removal was performed prior to pretreatment to protect the processing equipment and avoid inhibition of enzymes and yeast. Composition of the washed biomass was comparable to traditional lignocellulosic biomasses with relatively high glucan and xylan content (26 and 22. g/100. gDM, respectively) but with lower lignin content (7. g/100. gDM). The washed feedstock was subjected to hydrothermal pretreatment, producing highly digestible (up to 92% glucan-to-glucose conversion) and fermentable (up to 100% glucose-to-ethanol conversion) fiber fractions. Liquid fractions obtained in the pretreatment did not show inhibition towards Saccharomyces cerevisiae. No significant differences among the enzymatic convertibility and microbial fermentability of the fibers as well as low xylose recoveries suggest that lower severity pretreatment conditions could be exploited for S. bigelovii.
KW - Bioethanol
KW - Enzymatic hydrolysis
KW - Halophytes
KW - Hydrothermal pretreatment
KW - Saccharomyces cerevisiae
UR - http://www.scopus.com/inward/record.url?scp=84890813755&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2013.11.071
DO - 10.1016/j.biortech.2013.11.071
M3 - Journal article
C2 - 24362358
AN - SCOPUS:84890813755
SN - 0960-8524
VL - 153
SP - 165
EP - 172
JO - Bioresource Technology
JF - Bioresource Technology
ER -