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

研究成果: 雜誌貢獻文章同行評審

83 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)76-83
頁數8
期刊Bioresource Technology
193
DOIs
出版狀態已發佈 - 10月 1 2015
對外發佈

ASJC Scopus subject areas

  • 生物工程
  • 環境工程
  • 可再生能源、永續發展與環境
  • 廢物管理和處置

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