Exploitation of Acacia confusa heartwood extract as natural photostabilizers

Heartwood extracts of Acacia confusa (HEAc) were proven to have the capability of ameliorating wood photostability. However, the efficacy of photostability compared with that of commercial photostabilizers was unknown. The aim of this study was to examine whether HEAc can be used as commercial photo...

Full description

Saved in:
Bibliographic Details
Published inWood science and technology Vol. 49; no. 4; pp. 811 - 823
Main Authors Chang, Tzu-Cheng, Hsiao, Nien-Chih, Yu, Po-Cheng, Chang, Shang-Tzen
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2015
Springer Nature B.V
Subjects
Acacia confusa
Biomedical and Life Sciences
Carbonyl compounds
Carbonyls
Ceramics
Composites
Discoloration
Glass
Irradiation
Life Sciences
Lignin
Machines
Manufacturing
Natural Materials
Original
Photodegradation
Processes
Ultraviolet radiation
Wood Science & Technology
Control Specimen
Lignin
HALS
Excited State Intramolecular Proton Transfer
Weight Gain Percentage
Online AccessGet full text

Cover

More Information
Summary:Heartwood extracts of Acacia confusa (HEAc) were proven to have the capability of ameliorating wood photostability. However, the efficacy of photostability compared with that of commercial photostabilizers was unknown. The aim of this study was to examine whether HEAc can be used as commercial photostabilizers. Comparison was made among commercially available photostabilizers, UV absorber (Eversorb 80, EV80) and hindered amine light stabilizer (Eversorb 93, EV93). Photostability of wood slices soaked in 1, 5 and 10 % HEAc or 1 % commercial photostabilizers (EV80 or EV93) solutions was evaluated. The discoloration of 5 and 10 % HEAc-treated specimens was significantly reduced after UV irradiation. Furthermore, lignin degradation and carbonyl formation were concurrently inhibited by 5 and 10 % HEAc treatments after UV irradiation. Interestingly, 1 % HEAc treatment showed similar effectiveness compared with EV80 treatment, while 5 and 10 % HEAc treatments showed better effectiveness than EV80 treatment. HEAc can absorb UV light and quench radicals; hence, wood photodegradation was consequently prevented. These results revealed that HEAc has great potential to be developed as a natural photostabilizer.
ISSN:0043-7719
1432-5225
DOI:10.1007/s00226-015-0722-z