Comparison of lignin distribution, structure, and morphology in wheat straw and wood
Review article, 2022

Agricultural fiber sources, such as wheat straw, are promising lignocellulosic feedstocks for the generation of renewable substitutes for synthetic materials (e.g., plastics, construction materials, biofuel, and other biorefinery products). The interest in the utilization of lignin has increased rapidly during the last years; the number of publications increased more than five times between 2000 and 2020. The number of publications concerning lignin from wheat straw follows the general trend with an increasing scientific interest in lignin but comprises less than 5% of the total lignin publications. The structure and morphology of lignin in straw and wood differ between the different species. The monolignol composition and spatial location in plant tissue are notably different, as well as the nature and abundance of lignin-carbohydrate linkages involving p-coumaric acid (pCA) and ferulic acid (FA) units in wheat straw lignin. To further enable the utilization of wheat straw as a resource for bio-based materials, a solid understanding of the wheat lignin structure and composition is required. This review aims to consolidate the state-of-the-art in wheat lignin and focuses on lignin and its distribution, fundamental chemical structures, and morphology in wheat straw and compares these features with lignin in wood cell walls.

Lignin-carbohydrate complexes

Lignin

Supramolecular structure

Wheat straw

Morphology

Author

Liming Zhang

Royal Institute of Technology (KTH)

Anette Larsson

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Annelie Moldin

Research & Development

Royal Institute of Technology (KTH)

Ulrica Edlund

Royal Institute of Technology (KTH)

Industrial Crops and Products

0926-6690 (ISSN)

Vol. 187 115432

Design for Circularity: Lignocellulose based Thermoplastics - Fib:Re

VINNOVA (2019-00047), 2020-01-01 -- 2024-12-31.

Subject Categories

Wood Science

Polymer Technologies

Plant Biotechnology

DOI

10.1016/j.indcrop.2022.115432

More information

Latest update

8/30/2022