Natural durability of subfossil oak: Wood chemical composition changes through the ages

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F20%3A43916300" target="_blank" >RIV/62156489:43410/20:43916300 - isvavai.cz</a>

Alternative codes found

RIV/86652079:_____/20:00508752

Result on the web

<a href="https://doi.org/10.1515/hf-2018-0309" target="_blank" >https://doi.org/10.1515/hf-2018-0309</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/hf-2018-0309" target="_blank" >10.1515/hf-2018-0309</a>

Result language

angličtina

Original language name

Natural durability of subfossil oak: Wood chemical composition changes through the ages

Original language description

In recent years, subfossil oak has become increasingly popular, particularly in the manufacture of small wooden products. Due to the long period of its underground preservation, detailed knowledge of its properties is essential to properly use this material. In this study, subfossil oak samples dated to approximately 1000, 2000 and 3000 years BP and recent oak samples were chemically analyzed to determine the contents of extractives, the main wood components, and inorganic elements. The results were then evaluated in light of their natural durability. The mass loss of subfossil oak was 2-3 times lower than that of the recent sample, but the age of the subfossil oak itself had no influence on its durability. The long-term leaching process of water-soluble ellagitannins, together with their hydrolysis and bonding in ferric tannate complexes, were responsible for the decreased durability. The oldest subfossil oak had the lowest amount of phenolic compounds and the highest content of inorganic elements. Optical emission spectrometry proved an increase in inorganic elements 5-7 times higher than recent oak content, with the highest increase found for calcium and iron. Compared to recent oaks, subfossil oaks manifested decreased content of carbohydrates and correspondingly increased lignin content. Our results revealed that subfossil oak cannot be considered a suitable material for exterior use under aerobic conditions.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20502 - Paper and wood

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Holzforschung

ISSN

0018-3830

e-ISSN

—

Volume of the periodical

74

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

13

Pages from-to

47-59

UT code for WoS article

000502772200005

EID of the result in the Scopus database

2-s2.0-85071177745