Abstract
Chemical analysis of the bark from four Hyrcanian forest species, Pterocarya fraxinifolia, Alnus subcordata, Gleditsia caspica and Parrotia persica were performed, and their total phenol contents, and antioxidant and chelating activities were evaluated. The greatest total phenol content (TPhC), 54.3% in dry extract, was detected in P. fraxinifolia bark and the lowest one in G. caspica bark with 4.5%. The 50% inhibitory concentrations (IC50) in the radical-scavenging assay against DPPH radicals in bark acetone extracts of P. fraxinifolia, A. subcordata, G. caspica and P. persica were 0.17, 0.21, 13.35, 0.19 mg ml−1, respectively. In the metal-chelating activity system, G. caspica extract demonstrated significant activity. Pterocarya fraxinifolia, A. subcordata and P. persica bark acetone extracts revealed a high potential for inhibition of DPPH radicals due to high amounts of phenolics. Superior health benefits can be expected from the compounds syringol, 4-vinylguaiacol, tyrosol, chavicol, resorcinol, hydroquinone, vanillin, rheosmin and acetophenone. Gleditsia caspica was found to have significant chelating activity due to isoeugenol.
Acknowledgments
This work was carried out at University of Hamburg, Department of Wood Chemistry and chemical technology of Wood. The authors thank Prof. Dr. Bodo Saake and his colleagues in advance for providing help during this research.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Editorials
- Editorial changes at Holzforschung
- Goodbye to Holzforschung
- Thanks to Oskar Faix
- Original Articles
- Orthotropic mechano-sorptive creep behavior of Chinese fir during the moisture adsorption process determined in tensile mode via dynamic mechanical analysis (DMA)
- Differences in the viscoelastic properties between earlywood and latewood in the growth rings of Chinese fir as analyzed by dynamic mechanical analysis (DMA) in the temperature range between −120°C and 120°C
- Failure conditions of solid wood on off-axis compression testing
- Effect of knots and holes on the modulus of elasticity prediction and mapping of sugi (Cryptomeria japonica) veneer using near-infrared hyperspectral imaging (NIR-HSI)
- Quantification of slip planes in the stem wood of Eucalyptus grandis
- DNA barcoding authentication for the wood of eight endangered Dalbergia timber species using machine learning approaches
- Chemical analysis and antioxidant activities of bark extracts from four endemic species of Hyrcanian forests in Iran
- Isolation of natural flavoring compounds from cooperage woods by pressurized hot water extraction (PHWE)
- Volatile organic compounds (VOCs) from lauan (Shorea ssp.) plyboard prepared with kraft lignin, soy flour, gluten meal and tannin: emissions during hot pressing and from panels as a function of time
- Plasma treatment of plastic film or decorative veneer and its effects on the peel strength and curling deformation of plastic film-reinforced pliable decorative sliced veneer (PR-RP-DSV)
Articles in the same Issue
- Frontmatter
- Editorials
- Editorial changes at Holzforschung
- Goodbye to Holzforschung
- Thanks to Oskar Faix
- Original Articles
- Orthotropic mechano-sorptive creep behavior of Chinese fir during the moisture adsorption process determined in tensile mode via dynamic mechanical analysis (DMA)
- Differences in the viscoelastic properties between earlywood and latewood in the growth rings of Chinese fir as analyzed by dynamic mechanical analysis (DMA) in the temperature range between −120°C and 120°C
- Failure conditions of solid wood on off-axis compression testing
- Effect of knots and holes on the modulus of elasticity prediction and mapping of sugi (Cryptomeria japonica) veneer using near-infrared hyperspectral imaging (NIR-HSI)
- Quantification of slip planes in the stem wood of Eucalyptus grandis
- DNA barcoding authentication for the wood of eight endangered Dalbergia timber species using machine learning approaches
- Chemical analysis and antioxidant activities of bark extracts from four endemic species of Hyrcanian forests in Iran
- Isolation of natural flavoring compounds from cooperage woods by pressurized hot water extraction (PHWE)
- Volatile organic compounds (VOCs) from lauan (Shorea ssp.) plyboard prepared with kraft lignin, soy flour, gluten meal and tannin: emissions during hot pressing and from panels as a function of time
- Plasma treatment of plastic film or decorative veneer and its effects on the peel strength and curling deformation of plastic film-reinforced pliable decorative sliced veneer (PR-RP-DSV)