期刊
BIOENERGY RESEARCH
卷 9, 期 1, 页码 146-156出版社
SPRINGER
DOI: 10.1007/s12155-015-9669-z
关键词
Klason lignin; Acetyl bromide lignin; Acid detergent lignin; Saccharification efficiency; Miscanthus; Bioenergy
资金
- European Union Seventh Framework Programme [289159]
Lignin is a key factor limiting saccharification of lignocellulosic feedstocks. In this comparative study, various lignin methods-including acetyl bromide lignin (ABL), acid detergent lignin (ADL), Klason lignin (KL), and modified ADL and KL determination methods-were evaluated for their potential to assess saccharification efficiency. Six diverse accessions of the bioenergy crop miscanthus were used for this analysis, which included accessions of Miscanthus sinensis, Miscanthus sacchariflorus, and hybrid species. Accessions showed large variation in lignin content. Lignin estimates were different between methods, but (highly) correlated to each other (0.54 a parts per thousand currency signaEuro parts per thousand r a parts per thousand currency signaEuro parts per thousand 0.94). The strength of negative correlations to saccharification efficiency following either alkaline or dilute acid pretreatment differed between lignin estimates. The strongest and most consistent correlations (-0.48 a parts per thousand currency signaEuro parts per thousand r a parts per thousand currency signaEuro parts per thousand a'0.85) were obtained with a modified Klason lignin method. This method is suitable for high throughput analysis and was the most effective in detecting differences in lignin content (p < 0.001) between accessions.
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