Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 68,
  • Issue 12,
  • pp. 1342-1347
  • (2014)

Investigating Lignin Key Features in Maize Lignocelluloses Using Infrared Spectroscopy

Not Accessible

Your library or personal account may give you access

Abstract

Lignins and their cross-linking to hemicelluloses detrimentally affect the cellulose-to-ethanol conversion of grass lignocelluloses. Screening appropriate grass cell walls and their compositional changes during the various steps of the process calls for a high-throughput analytical technique. Such a performance can be fulfilled by Fourier transform mid-infrared (FT-MIR) spectroscopy. In the present paper, a set of maize cell walls from mature stems were selected, including brown midrib samples. Lignin fractions were isolated by mild acidolysis to obtain a set of purified maize lignin standards. The lignin content and the percentage of lignin-derived p-hydroxyphenyl (H), guaiacyl (G), and syringyl (S) thioacidolysis monomers were determined. In addition, the composition of cell wall polysaccharides, as well as the amount of ester-linked p-coumaric (CA) and ferulic (FA) acids, was measured by wet chemistry. Partial least square (PLS) analyses were applied to infrared and chemical data of cell walls. The resulting models showed a good predictive ability with regard to the lignin content, to the frequency of S (or G) thioacidolysis monomers, and to the level of ester-linked CA of maize cell walls. The loading plots and regression coefficients revealed relevant infrared absorption bands.

PDF Article
More Like This
Nondestructive detection of anthocyanin content in fresh leaves of purple maize using hyperspectral data

Xin Yang, Shichen Gao, Xiaohe Gu, Chao Zhang, Qian Sun, Zhonghui Wei, Xueqian Hu, and Xuzhou Qu
Appl. Opt. 61(21) 6213-6222 (2022)

Estimating FPAR of maize canopy using airborne discrete-return LiDAR data

Shezhou Luo, Cheng Wang, Xiaohuan Xi, and Feifei Pan
Opt. Express 22(5) 5106-5117 (2014)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved