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Updated: Jun 22, 2026

Estimation of Crystalline Cellulose Content of Plant Biomass using the Updegraff Method
Published on: May 15, 2021
The structure characterization of cellulose xanthogenate derived from the straw of Eichhornia crassipes
Wenbing Zhou1, Duanwei Zhu, Alan Langdon
1Laboratory of Plant Nutrition and Ecological Environment Research, Microelement Research Center of Huazhong Agricultural University, Ministry of Agriculture, Wuhan 430070, China.
Abstract:
Alkali-treated straw and cellulose xanthogenate were derived from shoot and root biomass of Eichhornia crassipes by treatment with NaOH and CS(2), respectively. The structures of the raw and modified plant materials were characterized by XRD, TGA/DTA, and FTIR. Alkali treatment increased the crystallinity of raw plant material, while the subsequent CS(2) treatment had the reverse effect. The thermal stability of the plant material was diminished by alkali treatment but was restored by subsequent CS(2) treatment. Alkali treatment removed most of the lignin and hemicellulose from the raw plant material, whereas the formation of cellulose xanthogenate introduced new C=S and O-CS-S functional groups.
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