TY - JOUR
T1 - Changing in Larch Sapwood Extractives Due to Distinct Ionizing Radiation Sources
AU - Schnabel, T.
AU - Barbu, M.C.
AU - Tudor, E.M.
AU - Petutschnigg, A.
N1 - Cited By :5
Export Date: 14 December 2023
Correspondence Address: Schnabel, T.; Department Forest Products Technology and Timber Constructions, Markt 136a, Austria; email: [email protected]
Funding details: European Cooperation in Science and Technology, COST, FP 1407
Funding details: European Regional Development Fund, ERDF
Funding text 1: This research was co-funded by the European Funds for Regional Development (EFRE), Austria Wirtschafts Service (AWS), and the region of Salzburg for the support in the development of the Salzburg Center for Smart Materials. Furthermore, this work was supported from the federal state of Salzburg under the grant ‘Holz.Aktiv’. The authors thank Kerstin Wagner, MSc for doing the GC-MS measurements in her Short-Term Scientific Mission (STSM) of the COST Action FP 1407. We would like to thank Stefan Willför from the Åbo Akademi University for kindly providing his facilities for the identification of extractives.
Funding text 2: Funding: This research was co-funded by the European Funds for Regional Development (EFRE), Austria Wirtschafts Service (AWS), and the region of Salzburg for the support in the development of the Salzburg Center for Smart Materials. Furthermore, this work was supported from the federal state of Salzburg under the grant ‘Holz.Aktiv’.
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PY - 2021/3/26
Y1 - 2021/3/26
N2 - Wood extractives have an influence on different material properties. This study deals with the changes in wood extractives of larch sapwood due to two different low doses of energy irradiations. Electron beam irradiation (EBI) and Γ-ray irradiation treatments were done by using two industrial processes. After the different modifications the extractions were performed with an accelerated solvent extractor (ASE) using hexane and acetone/water. The qualitative and quantitative chemical differences of irradiated larch sapwood samples were analysed using gas chromatography-mass spectrometry (GC-MS) and Fourier-transform infrared spectroscopy (FT-IR) vibrational spectroscopy methods. The yields of the quantitative extractions decreased due to the two different irradiation processes. While the compounds extracted with nonpolar solvent from wood were reduced, the number of compounds with polar functionalities increased based on the oxidation process. Quantitatively, resin acids and polyphenols were highly affected when exposed to the two irradiation sources, leading to significant changes (up, down) in their relative amount. Furthermore, two new substances were found in the extracts of larch sapwood samples after EBI orΓ-ray treatments. New insight into the different effects of larch sapwood and wood extractives by EBI and Γ-ray was gained in this study.
AB - Wood extractives have an influence on different material properties. This study deals with the changes in wood extractives of larch sapwood due to two different low doses of energy irradiations. Electron beam irradiation (EBI) and Γ-ray irradiation treatments were done by using two industrial processes. After the different modifications the extractions were performed with an accelerated solvent extractor (ASE) using hexane and acetone/water. The qualitative and quantitative chemical differences of irradiated larch sapwood samples were analysed using gas chromatography-mass spectrometry (GC-MS) and Fourier-transform infrared spectroscopy (FT-IR) vibrational spectroscopy methods. The yields of the quantitative extractions decreased due to the two different irradiation processes. While the compounds extracted with nonpolar solvent from wood were reduced, the number of compounds with polar functionalities increased based on the oxidation process. Quantitatively, resin acids and polyphenols were highly affected when exposed to the two irradiation sources, leading to significant changes (up, down) in their relative amount. Furthermore, two new substances were found in the extracts of larch sapwood samples after EBI orΓ-ray treatments. New insight into the different effects of larch sapwood and wood extractives by EBI and Γ-ray was gained in this study.
KW - EBI;Γ-ray
KW - FT-IR
KW - GC-MS
KW - Larch sapwood
KW - Wood extractives
KW - Acetone
KW - Fourier transform infrared spectroscopy
KW - Gas chromatography
KW - Irradiation
KW - Mass spectrometry
KW - Spectroscopic analysis
KW - Wood products
KW - Electron beam irradiation
KW - Fourier transform infra red (FTIR) spectroscopy
KW - Gamma-ray irradiation
KW - Gas chromatography-mass spectrometries (GC-MS)
KW - Industrial processs
KW - Irradiation process
KW - Irradiation sources
KW - Quantitative extraction
KW - Gamma rays
UR - https://www.mendeley.com/catalogue/02b67ef0-8003-32f1-acfd-c940ef5406a4/
U2 - 10.3390/ma14071613
DO - 10.3390/ma14071613
M3 - Article
C2 - 33810257
SN - 1996-1944
VL - 14
JO - Mater.
JF - Mater.
IS - 7
ER -