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Chemical composition and antimicrobial activity of essential oil from cones of Pinus koraiensis.

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The essential oil from the cones of Pinus koraiensis was prepared after removing the seeds, and its chemical composition analyzed using gas chromatography-mass spectrometry (GC-MS). Hydrodistillation of the P. koraiensis cones yielded 1.07% (v/w) of essential oil, which was almost three times the

Chemical composition of essential oils from needles and twigs of balkan pine (Pinus peuce grisebach) grown in Northern Greece.

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The composition of essential oils from twigs and needles of Balkan pine (Pinus peuce Gris.) grown in northern Greece was investigated. The compounds were identified by using GC-MS analysis. The twig oil was rich in alpha-pinene (7.38%), beta-pinene (12.46%), beta-phellandrene (26.93%),

Variability of the needle essential oils of Pinus peuce from different populations in Montenegro and Serbia.

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The essential-oil composition of Pinus peuce Griseb. is reported at the population level. Macedonian pine is endemic high-mountain Balkan pine relict of an anthropogenically reduced area, with large morphological diversity and insufficiently clear taxonomic position. In the pine-needle terpene

Essential-oil composition of the needles collected from natural populations of Macedonian pine (Pinus peuce Griseb.) from the Scardo-Pindic mountain system.

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The needle-terpene profiles of two natural Pinus peuce populations from the Scardo-Pindic mountain system (Mt. Ošljak and Mt. Pelister) were analyzed. Among the 90 detected compounds, 87 were identified. The dominant constituents were α-pinene (45.5%), germacrene D (11.1%), β-pinene (10.8%), and

Chemical composition and antimicrobial activity of the essential oils of Pinus peuce (Pinaceae) growing wild in R. Macedonia.

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The chemical composition and antimicrobial activity of the essential oils isolated from twigs with needles (T+N) and from twigs without needles (T-N) from wild Pinus peuce Griseb. (Pinaceae), from three different locations in R. Macedonia, were investigated. Essential oil yields of T+N ranged from

Comparison of Chemical Composition of the Essential Oils from Different Botanical Organs of Pinus mugo Growing in Poland.

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The essential oils from needles, twigs, bark, wood, cones and young shoots of Pinus mugo were analyzed by GC, GC/MS, and ¹ H-NMR spectroscopy. More than 130 compounds were identified. The oils differed in the quantitative composition. The principal components of the oil from twigs with

Composition of essential oils isolated from the needles of Pinus uncinata and P. uliginosa grown in Poland.

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The compositions of mountain pine (Pinus uncinata) and peat-bog pine (P. uliginosa) needle essential oils were investigated. Enantiomeric compositions of selected monoterpene hydrocarbons were also examined. Respectively, fifty-three and seventy-six components of the essential oils were identified

Volatiles as Chemosystematic Markers for Distinguishing Closely Related Species within the Pinus mugo Complex.

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Headspace solid-phase microextraction (HS-SPME) coupled to GC/MS analysis was used to identify the constituents of pine-needle volatiles differentiating three closely-related pine species within the Pinus mugo complex, i.e., P. uncinata Ramond ex DC., P. uliginosa G.E.Neumann ex Wimm., and P. mugo

Composition, antimicrobial and antioxidant activities of seven essential oils from the North American boreal forest.

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Essential oils (EOs) were steam-extracted from the needles and twigs of balsam fir, black spruce, white spruce, tamarack, jack pine and eastern white cedar that remained after logging in eastern Canada. These EOs, similarly to that from Labrador tea and other commercial EOs from Chinese cinnamon,

Antibacterial and antifungal effects of essential oils from coniferous trees.

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Essential oils have potential biological effects, i.e., antibiotic, anticarcinogenic, and sedative effects during stress. In the present study, we investigated the antibacterial and antifungal effects of essential oils extracted from the coniferous species Pinus densiflora, Pinus koraiensis, and

Methyl Jasmonate-Induced Monoterpenes in Scots Pine and Norway Spruce Tissues Affect Pine Weevil Orientation.

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In large parts of Europe, insecticide-free measures for protecting conifer plants are desired to suppress damage by the pine weevil Hylobius abietis (L.). Treatment with methyl jasmonate (MeJA), a chemical elicitor already used in crop production, may enhance expression of chemical defenses in

Volatiles associated with preferred and nonpreferred hosts of the Nantucket pine tip moth, Rhyacionia frustrana.

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Ovipositing female Nantucket pine tip moth, Rhyacionia frustrana, prefer loblolly pine, Pinus taeda L., to slash pine, Pinus elliottii Engelm, except during the first spring following planting of seedlings. Host discrimination by R. frustrana increases as seedlings develop, suggesting that changes

Preference of meadow voles (Microtus pennsylvanicus) for conifer seedlings: Chemical components and nutritional quality of bark of damaged and undamaged trees.

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Meadow voles (Microtus pennsylvanicus Ord.) of the 1987-1988 population density peak left several seedling plantations of Norway spruce (Picea abies) and Norway pine (Pinus resinosa) severely damaged in southern Quebec, Canada, while white spruce (Picea glauca) and white pine (Pinus strobus)

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