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Article

Macrobiological Degradation of Esterified Wood with Sorbitol and Citric Acid

1
Norwegian Institute of Bioeconomy Research, Høgskoleveien 8, 1433 Ås, Norway
2
Structures Department, LNEC, National Laboratory for Civil Engineering, Av. do Brasil, 101, 1700-066 Lisbon, Portugal
3
Centre for Ecology, Evolution and Environmental Changes (cE3c)/Azorean Biodiversity Group and University of Azores, Rua Capitão João d’Ávila, 9700-042 Angra do Heroísmo, Portugal
*
Author to whom correspondence should be addressed.
Forests 2020, 11(7), 776; https://doi.org/10.3390/f11070776
Received: 15 June 2020 / Revised: 1 July 2020 / Accepted: 10 July 2020 / Published: 19 July 2020
There is a need for new solutions in wood protection against marine wood borers and termites in Europe. A new solution could be the esterification of wood with sorbitol and citric acid (SCA) since these are inexpensive and readily available feedstock chemicals and have shown protective properties against fungal wood degradation in earlier studies and prevented macrobiological degradation, as shown in this study. Protection of wood products in the marine environment lacks available wood preservatives that are approved for marine applications. Termite infestation is opposed mainly by biocide treatments of wood. Several wood modification systems show high resistance against both marine borers and subterranean termites. However, the existing commercialized wood modification products are costly. Both macrobiological forms of degradation represent a great threat for most European wood species, which are rapidly and severely degraded if not properly treated. This study investigated esterified wood in standard field trials against marine wood borers, and against subterranean termites in laboratory trials in a no-choice and choice test. The treatment showed good resistance against wood borers in the marine environment after one season and against subterranean termites in the laboratory after eight weeks. The low termite survival rate (SR) in the no-choice test during the first week of testing indicates a mode of action that is incomparable to other wood modification treatments. View Full-Text
Keywords: subterranean termites; marine wood borers; polyesterification; wood protection subterranean termites; marine wood borers; polyesterification; wood protection
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MDPI and ACS Style

Treu, A.; Nunes, L.; Larnøy, E. Macrobiological Degradation of Esterified Wood with Sorbitol and Citric Acid. Forests 2020, 11, 776. https://doi.org/10.3390/f11070776

AMA Style

Treu A, Nunes L, Larnøy E. Macrobiological Degradation of Esterified Wood with Sorbitol and Citric Acid. Forests. 2020; 11(7):776. https://doi.org/10.3390/f11070776

Chicago/Turabian Style

Treu, Andreas; Nunes, Lina; Larnøy, Erik. 2020. "Macrobiological Degradation of Esterified Wood with Sorbitol and Citric Acid" Forests 11, no. 7: 776. https://doi.org/10.3390/f11070776

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