Bm Lignin Structure and Chemical Compositional Characteristics of Switchgrass

Abstract:

Switchgrass contains high content of cellulose which is suitable to enzymetically hydrolyze to glucose, and is a good potential biomass for biofuel production. The paper studied a kind (Alamo, CA993,CA992,Kanlow) switchgrass ball milled lignin structure using 13C NMR and 31P NMR. Both NMR lignin spectrums showed little difference of this switchgrass. Its extractive-free compositional components were also analyzed like acid insoluble lignin, acid soluble lignin, ash and carbohydrates separately. Its acid insoluble and soluble lignin contents were close to each other in the range of 21% and 2.5% respectively. Their carbohydrates are made mainly up of glucose and xylose, which fractions are around 52% to 40% based on the whole carbohydrates.

• Periodical: Advanced Materials Research (Volumes 455-456)
• Pages: 1257-1260
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.455-456.1257
• Online since: January 2012
• Authors: Jin Hua Yan, Hui Xia Xu, Yan Li, Xiang Hua Li
• Keywords: Composition, Lignin Structure, Switchgrass

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