G-lignin and hemicellulosic monosaccharides distinctively affect biomass digestibility in rapeseed. (March 2016)

• Record Type: Journal Article
• Authors: Pei, Yanjie; Li, Yuyang; Zhang, Youbing; Yu, Changbing; Fu, Tingdong; Zou, Jun; Tu, Yuanyuan; Peng, Liangcai; Chen, Peng
• Is Part Of: Bioresource technology. Volume 203(2016)
• Page Start: 325
• Page End: 333
• Publication Date: 2016-03
• Subjects: Rapeseed -- G-lignin -- Hemicellulosic monosaccharide -- Biomass digestibility -- Enzymatic saccharification; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.12.072
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Four rapeseed species showed distinct cell wall composition in 19 samples. H2 SO4 and lime pretreatments led to a diverse biomass digestibility in rapeseeds. G-lignin had strongly negative effect on biomass saccharification. Hemicellulosic monosaccharides positively affected biomass digestibility. Brassica napus showed more efficient biomass digestion and ethanol production. Abstract: In this study, total 19 straw samples from four Brassica species were determined with a diverse cell wall composition and varied biomass enzymatic digestibility under sulfuric acid or lime pretreatment. Correlation analysis was then performed to detect effects of cell wall compositions and wall polymer features (cellulose crystallinity, hemicellulosic monosaccharides and lignin monomers) on rapeseeds biomass digestibility. As a result, coniferyl alcohol (G-lignin) showed a strongly negative effect on biomass saccharification, whereas hemicellulosic monosaccharides (fucose, galactose, arabinose and rhamnose) were positive factors on lignocellulose digestions. Notably, chemical analyses of four typical pairs of samples indicated that hemicellulosic monosaccharides and G-lignin may coordinately influence biomass digestibility in rapeseeds. In addition, Brassica napus with lower lignin content exhibited more efficiency on both biomass enzymatic saccharification and ethanol production, compared with Brassica junjea. Hence, this study has at first time provided a genetic strategy on cell wall modification towards bioenergy rapeseed breeding.