TY - JOUR
T1 - Chemical compositions of four switchgrass populations
AU - Yan, Jinhua
AU - Hu, Zhoujian
AU - Pu, Yunqiao
AU - Charles Brummer, E.
AU - Ragauskas, Arthur J.
PY - 2010/1
Y1 - 2010/1
N2 - Four populations of switchgrass (Alamo, GA993, GA992, Kanlow), Panicum virgatum L., were studied for the difference of their chemical constituents. The extractives, Klason lignin, and carbohydrates compositions of the stem portion of these switchgrass populations were determined by gas chromatography mass spectroscopy (GC-MS) and high performance anion exchange chromatography with pulsed amperometric detection (HPAEC-PAD) respectively. Ball milled grass lignin (BMGL) was isolated and analyzed by NMR spectroscopy. The results demonstrated that the chemical compositions of four switchgrass populations were similar with the exception of the lignin content and chemical composition of extractives. The results of quantitative 13C NMR spectroscopy indicated that switchgrass lignin consisted of p-hydroxylphenyl, guaiacyl, and syringyl units in an average ratio of 26:42:32 and incorporated with p-coumaric acid and ferulic acid at a level of approximately 0.20 per aromatic ring. The lignin structure of four switchgrass cultivars was comparable.
AB - Four populations of switchgrass (Alamo, GA993, GA992, Kanlow), Panicum virgatum L., were studied for the difference of their chemical constituents. The extractives, Klason lignin, and carbohydrates compositions of the stem portion of these switchgrass populations were determined by gas chromatography mass spectroscopy (GC-MS) and high performance anion exchange chromatography with pulsed amperometric detection (HPAEC-PAD) respectively. Ball milled grass lignin (BMGL) was isolated and analyzed by NMR spectroscopy. The results demonstrated that the chemical compositions of four switchgrass populations were similar with the exception of the lignin content and chemical composition of extractives. The results of quantitative 13C NMR spectroscopy indicated that switchgrass lignin consisted of p-hydroxylphenyl, guaiacyl, and syringyl units in an average ratio of 26:42:32 and incorporated with p-coumaric acid and ferulic acid at a level of approximately 0.20 per aromatic ring. The lignin structure of four switchgrass cultivars was comparable.
KW - Ball-milled grass lignin
KW - Carbohydrates
KW - Extractives
KW - NMR
KW - Panicum virgatum L.
UR - http://www.scopus.com/inward/record.url?scp=72649100792&partnerID=8YFLogxK
U2 - 10.1016/j.biombioe.2009.09.010
DO - 10.1016/j.biombioe.2009.09.010
M3 - Article
AN - SCOPUS:72649100792
SN - 0961-9534
VL - 34
SP - 48
EP - 53
JO - Biomass and Bioenergy
JF - Biomass and Bioenergy
IS - 1
ER -