Chemical Composition of Lipophilic Extractives from Grey Alder (Alnus incana)

Bikovens, Oskars; Roze, Liga; Pranovich, Andrey; Телышева, Галина

doi:10.15376/biores.8.1.350-357

Cited by 14 publications

(9 citation statements)

References 8 publications

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“…Jahan et al (2010) reported that the zones of inhibition demonstrated by the petroleum ether, carbon tetrachloride, and dichloromethane fractions of extracts of D. regia stem bark ranged from 9 to 14 mm, 11 to 13 mm, and 9 to 20 mm, respectively, compared to kanamycin as a standard antibiotic with zones of inhibition ranged between 20 mm and 25 mm. Other studies reported that constituents such as 2,4-bis(1,1-dimethylethyl)-phenol, 12-methyl-tetradecanoic acid methyl ester, hexadecanoic acid methyl ester, phytol, and octadecanoic acid methyl ester have proven antimicrobial potential (Agoramoorthy et al 2007;Bikovens et al 2013;Namuli et al 2011;Rani et al 2011).…”

Section: Antibacterial and Antifungal Activities Of Extractsmentioning

confidence: 99%

Stem Wood and Bark Extracts of Delonix regia (Boj. Ex. Hook): Chemical Analysis and Antibacterial, Antifungal, and Antioxidant Properties

Salem¹,

Abdel-Megeed²,

Ali³

2014

BioResources

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In the present study, the fatty acid components of the wood, bark, and essential oil of wood from Delonix regia as well as its antibacterial, antifungal, and antioxidant properties were investigated for the potential ability to control plant and human pathogens. Myristic acid was found to be a major fatty acid in the wood and bark of Delonix regia, comprising 10.77% of wood and 9.63% of bark. According to the GC-MS results, naphthalene derivatives were detected in the essential oils from the wood samples. Heptadecane and acyclic hydrocarbons were found in a high percentage (14.05%). Methanol: chloroform (1:1 v/v) wood extract showed effective activity against Bacillus subtilis, Sarcina lutea, and Staphylococcus aureus, where the bark extract was most active against Escherichia coli. The essential oil showed good antibacterial activity against Pectobacterium carotovorum. The bark extract showed the maximum percentage inhibition of fungal mycelial growth against Penicillium selerotigenum (70.37%) and Paecilomyces variotii (77.78%), and the essential oil showed moderate inhibition against Aspergillus nigra (44.44%). The total antioxidant activity of essential oil, stem wood, and stem bark extract was 84.34%, 80.33%, and 70.21%, respectively.

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Section: Antibacterial and Antifungal Activities Of Extractsmentioning

confidence: 99%

Stem Wood and Bark Extracts of Delonix regia (Boj. Ex. Hook): Chemical Analysis and Antibacterial, Antifungal, and Antioxidant Properties

Salem¹,

Abdel-Megeed²,

Ali³

2014

BioResources

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“…The proportions of particular components in wood tissue depend on the species, the habitat conditions, the climate, the part of the tree from which samples are taken (trunk, branches, roots, sapwood or heartwood, bark, juvenile, or mature wood), the time of year, and the health of the tree (Bikovens et al 2013;Miranda et al 2017;Szczepkowski et al 2007;Zobel and Sprague 1998). Another factor for the variation of the chemical structure of wood and its possible uses is the age of the tree, as has been documented for certain species (Berrocal et al 2004;Fidelis et al 2013;Healey et al 2016;Miranda and Pereira 2002;Rencoret et al 2011;Uprichard and Lloyd 1980).…”

Section: Introductionmentioning

confidence: 99%

The effect of tree age on the chemical composition of the wood of silver birch (Betula pendula Roth.) in Poland

et al. 2019

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The article presents the results of a so far most extensive study on the effect of tree age on variation of the chemical structure of silver birch wood carried out in Poland. Field studies took place in 12 forestry districts distributed throughout the country. In each district, study sites were selected with stands aged approximately 30, 50, and 70 years in fresh broadleaved forest habitats, as well as in five districts in fresh mixed broadleaved forest habitats. Analyses were made of the contents of substances soluble in cold and hot water, ethanol and 1% NaOH, as well as the contents of cellulose, lignin, pentosans and ash, and the pH, of wood from 306 silver birch trees. Tree age was shown to have a significant effect on the contents of cellulose, pentosans, ash, and substances soluble in 1% NaOH. In the case of the other characteristics, age was found to have no significant effect. The cellulose content was lowest in 30-year-old stands and increased with tree age. Similar observations were made regarding ash content. Contents of pentosans and substances soluble in 1% NaOH were highest in the wood of the youngest trees. Since birch wood is used by the pulp and paper, board and energy industries, the knowledge of its chemical composition, depending on the age of the trees, can be of potential practical importance for its further application.

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“…Researchers have identified and analyzed numerous extracts, representing many classes of organic compounds, from different trees and plant materials (González-Vila et al 1997, Fernandez et al 2001. Extractive composition is highly variable both within and among species (Scheffer & Cowling 1966), and it depends on the age, seasonality, and location of the tree (Bikovens et al 2012). In addition, the variability of extractives obtained from different chemical substrates presents an enormous challenge in terms of standardization.…”

Section: Introductionmentioning

confidence: 99%

Compositions of compounds extracted from thermo-treated wood using solvents of different polarities

Lovaglio¹,

D’Auria²,

Rita³

et al. 2017

iForest

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How well modified wood products perform may be influenced by their chemical compositions. Wood extractives are nonstructural constituents, many with specific biological properties, which affect the color, fragrance, hygroscopicity, durability, and acoustic properties and the drying and adhesion processes of wood. However, incomplete information is available on the extraction techniques and potential use of extractives as value-added chemical products. The main goal of this research was to explore the effects of thermo-vacuum treatment of Deodar cedar (Cedrus deodara Roxb.) and Italian alder (Alnus cordata Desf.) woods on the content and composition of extractives. Solvents with different polarities were used, including water, hexane, dichloromethane, methanol, and a benzene/ethanol mixture. Component groups in extracts were determined by gas chromatography in combination with mass spectrometry. Regardless of the treatment and solvent, the most representative extracts to be obtained from alder were acids/esters, whereas hydrocarbons were most frequently obtained from cedar. Our results revealed an interesting differential species-specific effect of solvents on the composition of extracts. Aside from benzene/ethanol, greater amounts of extracts were obtained from treated than from untreated alder, whereas the opposite was true for cedar, aside from methanol

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Chemical Composition of Lipophilic Extractives from Grey Alder (Alnus incana)

Cited by 14 publications

References 8 publications

Stem Wood and Bark Extracts of Delonix regia (Boj. Ex. Hook): Chemical Analysis and Antibacterial, Antifungal, and Antioxidant Properties

Stem Wood and Bark Extracts of Delonix regia (Boj. Ex. Hook): Chemical Analysis and Antibacterial, Antifungal, and Antioxidant Properties

The effect of tree age on the chemical composition of the wood of silver birch (Betula pendula Roth.) in Poland

Compositions of compounds extracted from thermo-treated wood using solvents of different polarities

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