Hot water extraction and steam explosion as pretreatments for ethanol production from spruce bark

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Hot water extraction and steam explosion as pretreatments for ethanol production from spruce bark. / Kemppainen, Katariina; Inkinen, Jenni; Uusitalo, Jaana; Nakari-Setälä, Tiina; Siika-aho, Matti.

In: Bioresource Technology, Vol. 117, 08.2012, p. 131-139.

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Kemppainen, Katariina ; Inkinen, Jenni ; Uusitalo, Jaana ; Nakari-Setälä, Tiina ; Siika-aho, Matti. / Hot water extraction and steam explosion as pretreatments for ethanol production from spruce bark. In: Bioresource Technology. 2012 ; Vol. 117. pp. 131-139.

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@article{1722a0c9600a46e897d2163400f30b80,
title = "Hot water extraction and steam explosion as pretreatments for ethanol production from spruce bark",
abstract = "Spruce bark is a source of interesting polyphenolic compounds and also a potential but little studied feedstock for sugar route biorefinery processes. Enzymatic hydrolysis and fermentation of spruce bark sugars to ethanol were studied after three different pretreatments: steam explosion (SE), hot water extraction (HWE) at 80 °C, and sequential hot water extraction and steam explosion (HWE + SE), and the recovery of different components was determined during the pretreatments. The best steam explosion conditions were 5. min at 190 °C without acid catalyst based on the efficiency of enzymatic hydrolysis of the material. However, when pectinase was included in the enzyme mixture, the hydrolysis rate and yield of HWE bark was as good as that of SE and HWE + SE barks. Ethanol was produced efficiently with the yeast Saccharomyces cerevisiae from the pretreated and hydrolysed materials suggesting the suitability of spruce bark to various lignocellulosic ethanol process concepts.",
keywords = "Bark, Enzymatic hydrolysis, Lignocellulosic ethanol, Pretreatment, SSF",
author = "Katariina Kemppainen and Jenni Inkinen and Jaana Uusitalo and Tiina Nakari-Set{\"a}l{\"a} and Matti Siika-aho",
year = "2012",
month = "8",
doi = "10.1016/j.biortech.2012.04.080",
language = "English",
volume = "117",
pages = "131--139",
journal = "Bioresource Technology",
issn = "0960-8524",

}

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TY - JOUR

T1 - Hot water extraction and steam explosion as pretreatments for ethanol production from spruce bark

AU - Kemppainen, Katariina

AU - Inkinen, Jenni

AU - Uusitalo, Jaana

AU - Nakari-Setälä, Tiina

AU - Siika-aho, Matti

PY - 2012/8

Y1 - 2012/8

N2 - Spruce bark is a source of interesting polyphenolic compounds and also a potential but little studied feedstock for sugar route biorefinery processes. Enzymatic hydrolysis and fermentation of spruce bark sugars to ethanol were studied after three different pretreatments: steam explosion (SE), hot water extraction (HWE) at 80 °C, and sequential hot water extraction and steam explosion (HWE + SE), and the recovery of different components was determined during the pretreatments. The best steam explosion conditions were 5. min at 190 °C without acid catalyst based on the efficiency of enzymatic hydrolysis of the material. However, when pectinase was included in the enzyme mixture, the hydrolysis rate and yield of HWE bark was as good as that of SE and HWE + SE barks. Ethanol was produced efficiently with the yeast Saccharomyces cerevisiae from the pretreated and hydrolysed materials suggesting the suitability of spruce bark to various lignocellulosic ethanol process concepts.

AB - Spruce bark is a source of interesting polyphenolic compounds and also a potential but little studied feedstock for sugar route biorefinery processes. Enzymatic hydrolysis and fermentation of spruce bark sugars to ethanol were studied after three different pretreatments: steam explosion (SE), hot water extraction (HWE) at 80 °C, and sequential hot water extraction and steam explosion (HWE + SE), and the recovery of different components was determined during the pretreatments. The best steam explosion conditions were 5. min at 190 °C without acid catalyst based on the efficiency of enzymatic hydrolysis of the material. However, when pectinase was included in the enzyme mixture, the hydrolysis rate and yield of HWE bark was as good as that of SE and HWE + SE barks. Ethanol was produced efficiently with the yeast Saccharomyces cerevisiae from the pretreated and hydrolysed materials suggesting the suitability of spruce bark to various lignocellulosic ethanol process concepts.

KW - Bark

KW - Enzymatic hydrolysis

KW - Lignocellulosic ethanol

KW - Pretreatment

KW - SSF

UR - http://www.scopus.com/inward/record.url?scp=84861171628&partnerID=8YFLogxK

U2 - 10.1016/j.biortech.2012.04.080

DO - 10.1016/j.biortech.2012.04.080

M3 - Article

VL - 117

SP - 131

EP - 139

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

ER -

ID: 15945123