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Determination of the Volatile Fraction of Polygonum bistorta L. at Different Growing Stages and Evaluation of Its Antimicrobial Activity against Two Major Honeybee (Apis mellifera) Pathogens
- Source :
- Chemistry & Biodiversity. 9:359-369
- Publication Year :
- 2012
- Publisher :
- Wiley, 2012.
-
Abstract
- The composition of the volatile fraction of Polygonum bistorta L. (also known as bistort or snakeroot) was investigated. Fresh aerial parts of this plant species were collected in the Western Italian Alps during the summer at three different phenological stages, namely vegetative, flowering, and fruiting, and steam-distilled in a Clevenger-type apparatus. The oils accounted for 0.004 to 0.010% of the fresh plant material, and their compositions were determined by GC/FID and GC/MS. The composition of the oils during the vegetative period varied both in quantity and quality; several classes of compounds were found with a predominance of alcohols in the vegetative phase, terpenes and linear-chained saturated hydrocarbons in the flowering phase, while saturated aliphatic acids and their methyl esters were predominant in fruiting phase. The most abundant compounds were 3-methylbut-3-en-1-ol in the vegetative phase, linalool in the flowering phase, and dodecanoic acid and its methyl ester in the fruiting phase. The obtained essential oils were then tested against two major bee pathogens, i.e., Paenibacillus larvae and Melissococcus plutonius, and against a reference bacterial species, Bacillus subtilis. Data were compared to those obtained with reference standards used against those pathogens such as the essential oils obtained from leaves and bark of Cinnamomum zeylanicum (cinnamon), and the antibiotic oxytetracyclin.
- Subjects :
- Cinnamomum zeylanicum
Bioengineering
Flowers
Bacillus subtilis
Gram-Positive Bacteria
Biochemistry
Gas Chromatography-Mass Spectrometry
Terpene
chemistry.chemical_compound
Anti-Infective Agents
Linalool
Botany
Oils, Volatile
Animals
Plant Oils
Molecular Biology
biology
Phenology
fungi
food and beverages
General Chemistry
General Medicine
Bees
biology.organism_classification
Antimicrobial
Plant Leaves
chemistry
Fruit
visual_art
visual_art.visual_art_medium
Molecular Medicine
Bark
Composition (visual arts)
Polygonum
Subjects
Details
- ISSN :
- 16121872
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Chemistry & Biodiversity
- Accession number :
- edsair.doi.dedup.....1e3235f33c382fcc17980a5ed87675ad