Determination of the chemical composition of Eucalyptus spp. For cellulosic pulp production

Túlio Anselmo Sacramento Vieira, Taiana Guimarães Arriel, Antônio José Vinha Zanuncio, Amélia Guimarães Carvalho, Monique Branco-Vieira, Sónia Alexandra Correia Carabineiro, Paulo Fernando Trugilho

Research output: Contribution to journalArticlepeer-review

Abstract

The chemical composition of wood is important to assess the quality of this raw material for the industry of cellulosic pulp production. The purpose of this work was to determine the chemical composition of Eucalyptus spp. grown for cellulosic pulp production. Ten Eucalyptus spp. clones with six years of age, located in the municipality of Itamarandiba, Minas Gerais, Brazil, were used. Quantification was obtained for extractives, monosaccharides, uronic acids, acetates, lignin, ash and the phenolic composition of the extracts. In average, clones showed around 2.7% extractives, with a predominance of polar compounds soluble in ethanol and water; 27.7% lignin and 0.3% ash. Glucose was the main sugar detected (64.2%), followed by xylose (19.3%). The main components of the extractives were steroids, fatty acids and aromatic acids, followed by smaller amounts of substituted alkanoic acids, fatty alcohols, glycerol derivatives and triterpenes. The ethanol–water extracts presented total phenol contents ranging from 321.4 to 586.6 mg EAG/g of extract, tannins from 28.1 to 65.1 mg catechin/g of extract and flavonoids from 73.6 to 256.9 mg catechin/g of extract. Clones with a higher holocellulose amount and a lower lignin content showed a higher potential for cellulosic pulp production. These findings are important for the development of high-quality wood based on important traits for the pulp and paper sector.

Original languageEnglish
Article number1649
JournalForests
Volume12
Issue number12
DOIs
Publication statusPublished - Dec 2021

Keywords

  • Cellulose
  • Eucalyptus spp
  • Extractives
  • Monosaccharides
  • Phenolic compounds
  • Summative chemical composition
  • Wood

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