Development of extraction methodology for identification of extractive-compounds indexing natural durability of selected wood species

Keržič, Eli (author), Humar, Miha (author), Oven, Primož (author), Vek, Viljem (author)

This study is concerned with establishing a uniform experimental protocol for the determination of phenolic extractives, which play an essential role in the durability of the wood of selected species included in the field tests. European larch (Larix decidua), Norway spruce (Picea abies), Scots pine (Pinus sylvestris), European oak (Quercus sp.), sweet chestnut (Castanea sativa), and black locust (Robinia pseudoacacia) were included in the study. Extraction yield data were collected for extraction in a Soxhlet apparatus using common polar extraction solvents (ethanol, acetone, methanol, water) and for single static extraction cycles in accelerated solvent extraction (ASE). The suitability of the solvents and the appropriate extraction conditions were evaluated based on the results of gravimetric analysis of hydrophilic extractives, spectrophotometric analysis of total phenols, and chromatographic analysis using high-performance liquid chromatography. Extraction in the ASE system with methanol proved to be a quick and accurate way to prepare samples for chemical analysis of extractives of selected wood species. With the chemical monitoring of targeted phenolic extractives in wood subjected to leaching, we propose a novel protocol suitable also for measuring the effects of weathering on the natural durability of wood in future studies.

• Language: English
• Keywords: extraction from wood, phenolic extractives, natural durability, extractive leaching
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2023
• Number of pages: Str. 1940-1950
• Numbering: Vol. 18, no. 6
• PID: 20.500.12556/RUL-146655
• UDC: 630*8
• ISSN on article: 1748-0280
• DOI: 10.1080/17480272.2023.2207529
• COBISS.SI-ID: 151491331
• Publication date in RUL: 05.06.2023

Record is a part of a journal

• Title: Wood material science & engineering
• Shortened title: Wood mater. sci. eng
• Publisher: Taylor & Francis
• ISSN: 1748-0280
• COBISS.SI-ID: 522172953

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: ekstrakcija lesa, fenolni ekstraktivi, naravna odpornost, izpiranje ekstraktivov