LIGNIN QUANTITATION BY FT-RAMAN SPECTROSCOPY
Because of the structural complexity of biomass, quantitation of lignin in a variety of wood and plant cell walls is difficult. Consequently, to measure lignin in different plant species, a number of different methods exist. The methods can give different values for the same material samples and such differences result from the nature of the biomass. In the past, although there have been many applications of Raman spectroscopy in the studies of lignin, so far, for most materials, quantitation of lignin has proven to be a challenge, In the present work, a novel approach that successfully quantified lignin is described. The strategy, in part, was based upon the minimization of the contributions to the lignin band intensity at 1600 cm1 by those structures that contribute to it excessively, namely chromophores and aromatic-ring conjugated units in lignin. Using a variety of samples with lignin composition in the range 4.9 to 48.4 ％ good linear correlations against Klason and total lignins were developed (coefficients of determination R2 0.97 and 0.95, respectively).
lignin quantitation raman spectroscopy FT-Raman
Umesh P. Agarwal
USDA FS, Forest Products Laboratory, Madison WI,53726, USA
国际会议
16th International Symposium on Wood,Fiber and Pulping Chemistry(第十六届木材、纤维及制浆化学国际会议)
天津
英文
170-173
2011-06-08（万方平台首次上网日期，不代表论文的发表时间）