Grape marc as a source of carbohydrates for bioethanol: Chemical composition, pre-treatment and saccharification

Kendall R. Corbin; Yves S.Y. Hsieh; Natalie S. Betts; Caitlin S. Byrt; Marilyn Henderson; Jozsef Stork; Seth DeBolt; Geoffrey B. Fincher; Rachel A. Burton

doi:10.1016/j.biortech.2015.06.030

Grape marc as a source of carbohydrates for bioethanol: Chemical composition, pre-treatment and saccharification

Kendall R. Corbin, Yves S.Y. Hsieh, Natalie S. Betts, Caitlin S. Byrt, Marilyn Henderson, Jozsef Stork, Seth DeBolt, Geoffrey B. Fincher, Rachel A. Burton^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

133 Citations (Scopus)

Abstract

Global grape production could generate up to 13. Mt/yr of wasted biomass. The compositions of Cabernet Sauvignon (red marc) and Sauvignon Blanc (white marc) were analyzed with a view to using marc as raw material for biofuel production. On a dry weight basis, 31-54% w/w of the grape marc consisted of carbohydrate, of which 47-80% was soluble in aqueous media. Ethanol insoluble residues consisted mainly of polyphenols, pectic polysaccharides, heteroxylans and cellulose. Acid and thermal pre-treatments were investigated for their effects on subsequent cellulose saccharification. A 0.5. M sulfuric acid pre-treatment yielded a 10% increase in the amount of liberated glucose after enzymatic saccharification. The theoretical amount of bioethanol that could be produced by fermentation of grape marc was up to 400. L/t. However, bioethanol from only soluble carbohydrates could yield 270. L/t, leaving a polyphenol enriched fraction that may be used in animal feed or as fertilizer.

Original language	English
Pages (from-to)	76-83
Number of pages	8
Journal	Bioresource Technology
Volume	193
DOIs	https://doi.org/10.1016/j.biortech.2015.06.030
Publication status	Published - 1 Oct 2015
Externally published	Yes

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title = "Grape marc as a source of carbohydrates for bioethanol: Chemical composition, pre-treatment and saccharification",

abstract = "Global grape production could generate up to 13. Mt/yr of wasted biomass. The compositions of Cabernet Sauvignon (red marc) and Sauvignon Blanc (white marc) were analyzed with a view to using marc as raw material for biofuel production. On a dry weight basis, 31-54% w/w of the grape marc consisted of carbohydrate, of which 47-80% was soluble in aqueous media. Ethanol insoluble residues consisted mainly of polyphenols, pectic polysaccharides, heteroxylans and cellulose. Acid and thermal pre-treatments were investigated for their effects on subsequent cellulose saccharification. A 0.5. M sulfuric acid pre-treatment yielded a 10% increase in the amount of liberated glucose after enzymatic saccharification. The theoretical amount of bioethanol that could be produced by fermentation of grape marc was up to 400. L/t. However, bioethanol from only soluble carbohydrates could yield 270. L/t, leaving a polyphenol enriched fraction that may be used in animal feed or as fertilizer.",

keywords = "Bioethanol, Grape marc, Polysaccharide, Pre-treatment, Saccharification",

author = "Corbin, {Kendall R.} and Hsieh, {Yves S.Y.} and Betts, {Natalie S.} and Byrt, {Caitlin S.} and Marilyn Henderson and Jozsef Stork and Seth DeBolt and Fincher, {Geoffrey B.} and Burton, {Rachel A.}",

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doi = "10.1016/j.biortech.2015.06.030",

language = "English",

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AU - Corbin, Kendall R.

AU - Hsieh, Yves S.Y.

AU - Betts, Natalie S.

AU - Byrt, Caitlin S.

AU - Henderson, Marilyn

AU - Stork, Jozsef

AU - DeBolt, Seth

AU - Fincher, Geoffrey B.

AU - Burton, Rachel A.

PY - 2015/10/1

Y1 - 2015/10/1

N2 - Global grape production could generate up to 13. Mt/yr of wasted biomass. The compositions of Cabernet Sauvignon (red marc) and Sauvignon Blanc (white marc) were analyzed with a view to using marc as raw material for biofuel production. On a dry weight basis, 31-54% w/w of the grape marc consisted of carbohydrate, of which 47-80% was soluble in aqueous media. Ethanol insoluble residues consisted mainly of polyphenols, pectic polysaccharides, heteroxylans and cellulose. Acid and thermal pre-treatments were investigated for their effects on subsequent cellulose saccharification. A 0.5. M sulfuric acid pre-treatment yielded a 10% increase in the amount of liberated glucose after enzymatic saccharification. The theoretical amount of bioethanol that could be produced by fermentation of grape marc was up to 400. L/t. However, bioethanol from only soluble carbohydrates could yield 270. L/t, leaving a polyphenol enriched fraction that may be used in animal feed or as fertilizer.

AB - Global grape production could generate up to 13. Mt/yr of wasted biomass. The compositions of Cabernet Sauvignon (red marc) and Sauvignon Blanc (white marc) were analyzed with a view to using marc as raw material for biofuel production. On a dry weight basis, 31-54% w/w of the grape marc consisted of carbohydrate, of which 47-80% was soluble in aqueous media. Ethanol insoluble residues consisted mainly of polyphenols, pectic polysaccharides, heteroxylans and cellulose. Acid and thermal pre-treatments were investigated for their effects on subsequent cellulose saccharification. A 0.5. M sulfuric acid pre-treatment yielded a 10% increase in the amount of liberated glucose after enzymatic saccharification. The theoretical amount of bioethanol that could be produced by fermentation of grape marc was up to 400. L/t. However, bioethanol from only soluble carbohydrates could yield 270. L/t, leaving a polyphenol enriched fraction that may be used in animal feed or as fertilizer.

KW - Bioethanol

KW - Grape marc

KW - Polysaccharide

KW - Pre-treatment

KW - Saccharification

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DO - 10.1016/j.biortech.2015.06.030

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VL - 193

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JO - Bioresource Technology

JF - Bioresource Technology

ER -

Grape marc as a source of carbohydrates for bioethanol: Chemical composition, pre-treatment and saccharification

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