Effects of bacterial treatments on wood extractives

Anne Kallioinen (Corresponding Author), Anu Vaari, Marjaana Rättö, Jonas Konn, Matti Siika-aho, Liisa Viikari

Research output: Contribution to journalArticleScientificpeer-review

39 Citations (Scopus)

Abstract

Bacterial strains were isolated from spruce wood chips and their ability to reduce the content of wood extractives was studied. Strains were screened by cultivation on liquid media containing wood extractives as the major nutrient. Some bacterial species could decrease remarkably the amount of extractives in the liquid media and reduced the amount of triglycerides, steryl esters and total extractives by 100, 20 and 39%, respectively. Spruce wood chips were treated in controlled conditions with selected bacteria to test their effects on the chips. All the bacteria grew well on wood chips. The effect of bacterial metabolism on wood extractives was significant. Bacterial treatments reduced the amount of lipophilic extractives by 16–38% in 1 week of treatment and up to 67% in 2 weeks. The most efficient strain removed 90, 66 and 50% of triglycerides, steryl esters and resin acids, respectively, in 2 weeks. These results indicate that bacteria may be promising agents for the removal of extractives for improved pulping and papermaking processes.
Original languageEnglish
Pages (from-to)67-76
Number of pages10
JournalJournal of Biotechnology
Volume103
Issue number1
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

Wood
Bacteria
Esters
Triglycerides
Papermaking
Liquids
Metabolism
Nutrients
Resins
Food
Acids

Keywords

  • Biopulping, lipophilic wood extractives
  • Pitch
  • Norway spruce
  • Wood degradation

Cite this

Kallioinen, Anne ; Vaari, Anu ; Rättö, Marjaana ; Konn, Jonas ; Siika-aho, Matti ; Viikari, Liisa. / Effects of bacterial treatments on wood extractives. In: Journal of Biotechnology. 2003 ; Vol. 103, No. 1. pp. 67-76.
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abstract = "Bacterial strains were isolated from spruce wood chips and their ability to reduce the content of wood extractives was studied. Strains were screened by cultivation on liquid media containing wood extractives as the major nutrient. Some bacterial species could decrease remarkably the amount of extractives in the liquid media and reduced the amount of triglycerides, steryl esters and total extractives by 100, 20 and 39{\%}, respectively. Spruce wood chips were treated in controlled conditions with selected bacteria to test their effects on the chips. All the bacteria grew well on wood chips. The effect of bacterial metabolism on wood extractives was significant. Bacterial treatments reduced the amount of lipophilic extractives by 16–38{\%} in 1 week of treatment and up to 67{\%} in 2 weeks. The most efficient strain removed 90, 66 and 50{\%} of triglycerides, steryl esters and resin acids, respectively, in 2 weeks. These results indicate that bacteria may be promising agents for the removal of extractives for improved pulping and papermaking processes.",
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Effects of bacterial treatments on wood extractives. / Kallioinen, Anne (Corresponding Author); Vaari, Anu; Rättö, Marjaana; Konn, Jonas; Siika-aho, Matti; Viikari, Liisa.

In: Journal of Biotechnology, Vol. 103, No. 1, 2003, p. 67-76.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effects of bacterial treatments on wood extractives

AU - Kallioinen, Anne

AU - Vaari, Anu

AU - Rättö, Marjaana

AU - Konn, Jonas

AU - Siika-aho, Matti

AU - Viikari, Liisa

PY - 2003

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AB - Bacterial strains were isolated from spruce wood chips and their ability to reduce the content of wood extractives was studied. Strains were screened by cultivation on liquid media containing wood extractives as the major nutrient. Some bacterial species could decrease remarkably the amount of extractives in the liquid media and reduced the amount of triglycerides, steryl esters and total extractives by 100, 20 and 39%, respectively. Spruce wood chips were treated in controlled conditions with selected bacteria to test their effects on the chips. All the bacteria grew well on wood chips. The effect of bacterial metabolism on wood extractives was significant. Bacterial treatments reduced the amount of lipophilic extractives by 16–38% in 1 week of treatment and up to 67% in 2 weeks. The most efficient strain removed 90, 66 and 50% of triglycerides, steryl esters and resin acids, respectively, in 2 weeks. These results indicate that bacteria may be promising agents for the removal of extractives for improved pulping and papermaking processes.

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KW - Pitch

KW - Norway spruce

KW - Wood degradation

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