By the same authors

From the same journal

Effect of Brassica napus cultivar on cellulosic ethanol yield

Research output: Contribution to journalArticle

Published copy (DOI)

Author(s)

  • Ian P Wood
  • Nikolaus Wellner
  • Adam Elliston
  • David R. Wilson
  • Ian Bancroft
  • Keith W. Waldron

Department/unit(s)

Publication details

JournalBiotechnology for biofuels
DatePublished - 11 Jul 2015
Volume8
Original languageEnglish

Abstract

Background
Intraspecific variations in biomass composition are likely to influence their suitability for biorefining. This may be particularly important in species such as Brassica napus, which contain many different crop types bred for different purposes. Here, straw derived from 17 B. napus cultivars, of varying crop types, were steam exploded, saccharified and fermented to establish differences in biomass composition relevant to cellulosic ethanol production.

Results
Despite being grown and processed in the same manner, straw from the various cultivars produced different saccharification and fermentation yields after processing. Fermentation inhibitor abundances released by steam explosion also varied between genotypes. Cultivars with glucan-rich straw did not necessarily produce higher saccharification or ethanol yields after processing. Instead, the compositions of non-cellulosic components were more reliable indicators of substrate quality. The abundance of pectins and arabinogalactans had the greatest influence on saccharification efficiency between straw genotypes.

Conclusions
In dicotyledonous species, such as B. napus, variations in the abundance of pectins between crop cultivars are likely to influence processing efficiency for bioethanol production. Knowledge of these genotypic variants provides targets for plant breeding and could aid in the development of improved cellulase cocktails.

Keywords: Bioethanol; Biomass saccharification; Crop cultivars; Cultivar variation; Dicot; Dicotyledonous; Oilseed rape; Fermentation; Pretreatment; Rapeseed straw

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations