Effect of Brassica napus cultivar on cellulosic ethanol yield.
Effect of Brassica napus cultivar on cellulosic ethanol yield.
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DOI：
10.1186/s13068-015-0278-z
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发表时间：
2015
影响因子：
6.3
通讯作者：
Waldron KW
中科院分区：
文献类型：
--
作者：
Wood IP;Wellner N;Elliston A;Wilson DR;Bancroft I;Waldron KW
生物质组成的种内变化可能会影响其生物精炼的适用性。这在诸如甘蓝型油菜的物种中可能特别重要，这些物种包含为不同目的而培育的许多不同作物类型。在这里，稻草来自17 B。将不同作物类型的欧洲油菜栽培品种蒸汽爆破、糖化和发酵，以建立与纤维素乙醇生产相关的生物质组成的差异。尽管以相同的方式生长和加工，但来自不同栽培品种的秸秆在加工后产生不同的糖化和发酵产率。发酵抑制剂的丰度释放蒸汽爆炸也不同基因型。富含葡聚糖秸秆的品种在加工后不一定产生更高的糖化或乙醇产量。相反，非纤维素组分的组成是基质质量的更可靠指标。果胶和阿拉伯半乳聚糖的丰度对秸秆基因型间糖化效率的影响最大。在双子叶植物物种中，例如B。对于欧洲油菜，作物栽培品种之间果胶丰度的变化可能影响生物乙醇生产的加工效率。这些基因型变异的知识为植物育种提供了目标，并有助于开发改进的纤维素酶鸡尾酒。
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. 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. 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.