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pinus_sylvestris_l [2016/05/31 12:24]
andreas 		pinus_sylvestris_l [2020/02/07 11:38] (aktuell)
andreas
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 "Oils of Pinus sylvestris L. produced from plant material collected from different locations in Lithuania have been investigated by GC and GC/MS. The oil content in many samples was approximately 1 mL/100 g (dry weight) with few exceptions when it was slightly higher or lower. More than 70 constituents were identified (64 positively and 10 tentatively) in the oils. α-Pinene (18.5-33.0%) and δ-3-carene (9.1-24.6%) were dominating constituents with the only one exception when the germacrene-4-ol content in one of the samples was 13.2%. The important bornyl acetate content varied from 0.5% to 3.0%. The main sesquiterpenes were β-caryophyllene, germacrene D, bicyclogermacrene, δ-cadinene, γ-cadinene, germacrene D-4-ol, cubenol (2.0-5.1%) and α-cadinol (1.9-7.7%)." \\ "Oils of Pinus sylvestris L. produced from plant material collected from different locations in Lithuania have been investigated by GC and GC/MS. The oil content in many samples was approximately 1 mL/100 g (dry weight) with few exceptions when it was slightly higher or lower. More than 70 constituents were identified (64 positively and 10 tentatively) in the oils. α-Pinene (18.5-33.0%) and δ-3-carene (9.1-24.6%) were dominating constituents with the only one exception when the germacrene-4-ol content in one of the samples was 13.2%. The important bornyl acetate content varied from 0.5% to 3.0%. The main sesquiterpenes were β-caryophyllene, germacrene D, bicyclogermacrene, δ-cadinene, γ-cadinene, germacrene D-4-ol, cubenol (2.0-5.1%) and α-cadinol (1.9-7.7%)." \\
 [Composition of essential oils of Pinus sylvestris L. from different locations of Lithuania. Venskutonis, P. R., Vyskupaityte, K., Plausinaitis, R., Journal of Essential Oil Research, Vol.12(5), 2000, 559-565] [Composition of essential oils of Pinus sylvestris L. from different locations of Lithuania. Venskutonis, P. R., Vyskupaityte, K., Plausinaitis, R., Journal of Essential Oil Research, Vol.12(5), 2000, 559-565]
- 
-{{:bornylacetate.jpg| bornyl acetate }} \\ bornyl acetate  
  
 "...the distinctive odor is due to esters, mainly (-)-bornyl acetate... Turpentine oil and needle oils are antiseptic and secretolytic." \\ "...the distinctive odor is due to esters, mainly (-)-bornyl acetate... Turpentine oil and needle oils are antiseptic and secretolytic." \\
 [Medicinal Plants of the World. Ben-Erik Van Wyk and Michael Wink, Pretoria 2004, 242] [Medicinal Plants of the World. Ben-Erik Van Wyk and Michael Wink, Pretoria 2004, 242]
  
-{{:pinus_sylvestris.jpg?500}} \\+|{{:bornylacetate.jpg| bornyl acetate}} \\ bornyl acetate \\ //( woody pine camphoreous)// | {{:maltol.jpg| maltol}} \\ maltol \\  //(sweet caramel)//|  
 + 
 +Needles of Pinus spec. contain glycosidically bound maltol, which is cleaved during the drying of the needles on the forest floor, contributing to the characteristic note present in European (pine) forests warmed by the sun. \\ 
 +[Meaningful Scents around the World, R.Kaiser, 2006, 38]  
 + 
 +Main components of turpentine oil, obtained by hydrodistillation of oleoresin of Pinus sylvestris collected from Pinus sylvestris from Turkey were α-pinene (34.9-43.6%), β-pinene (17.0-29.4%), ∆3-carene (6.5-9.6%), camphene (1.0-2.2%), limonene (1.7-2.0%), longifolene (4.3-9.5%), and β-caryophyllene (1.1-1.6%). \\ 
 +[Tümen, İbrahim, and Markku Reunanen. "A comparative study on turpentine oils of oleoresins of Pinus sylvestris L. from three districts of Denizli." Records of Natural Products 4.4 (2010): 224-229] [[http://acgpubs.org/RNP/2010/Volume%204/Issue%201/27-RNP-1008-297.pdf]] 
 + 
 +To elucidate the smell of pine wood, solvent-assisted flavour evaporation (SAFE) of volatiles from pine wood shavings followed by dedicated odorant analysis techniques such as gas chromatography-olfactometry (GC-O) and aroma extract dilution analysis (AEDA) was applied. Of 44 odour-active compounds, 39 were identified by two-dimensional gas chromatography-mass spectrometry/olfactometry (2D-GC-MS/O). The majority of the identified odorants were fatty acid degradation products, plus some terpenoic substances and odorous substances resulting from the degradation of lignin. Highest flavour dilution factors (FD>=243) showed α-pinene (woody resinous), hexanal (green grassy), octanal (citrus), (E)-non-2-enal (fatty), linalool (citrus), (E)-dec-2-enal (fatty), (E,E)-nona-2,4-dienal (fatty), pentanoic acid (cheesy), (E,E)-deca-2,4-dienal (fatty), heptanoic acid (pepperoni-like, plastic), δ-octalactone (coconut), γ-nonalactone (peach), (E,Z,Z)-trideca-2,4,7-trienal (fruity blood-like metallic), δ-nonalactone (sweet coconut), nonanoic acid (leather artificial soapy), sotolone (savoury), α-bisabolol (balsamic pepper-like), phenylacetic acid (honey-like), vanillin (vanilla-like), 3-phenylpropanoic acid (vomit-like fruity), an unidentified androstenone-like substance (perfume-like) and thymoquinone (pencil-like). \\ 
 +[Schreiner, L., Bauer, P., & Buettner, A. (2018). Resolving the smell of wood-identification of odour-active compounds in Scots pine (Pinus sylvestris L.). Scientific reports, 8(1), 8294]  
 +[[https://www.nature.com/articles/s41598-018-26626-8]] 
 + 
 +Using stable isotope dilution analysis (SIDA) and odor activity values (OAVs) calculated on the basis of odor thresholds determined in cellulose, hexanal, octanal, (E)-non-2-enal, p-cresol, vanillin, and thymoquinone were the dominant odorants for wood odor of several softwood species (Pinus sylvestris, Larix decidua, Calocedrus decurrens, Abies concolor, and Picea abies). OAVs ≥ 1 were obtained for p-cresol (2), hexanal (OAV=6), octanal (374), (E)-non-2-enal (163), and vanillin (10). \\ 
 +Of all wood samples, the highest concentration of α-pinene was observed in Scots pine wood (122 mg/kg), but with an OAV<1. \\ 
 +"Even though α-pinene did not exceed an OAV > 1 in the wood samples, this compound was added to the recombinate for several reasons: On the one hand, during sensory evaluation, the attribute resin-like was rated with the highest values for the pine wood. Thus, the resin-like–smelling α-pinene might have an impact on the odor, since it was observed as the only odorant representing that odor impression. Furthermore, α-pinene was recorded with high-flavor dilution (FD) factors. In concordance with that, we found that preparation of the recombinates in the absence of α-pinene resulted in a lack of the resin-like odor. One reason for not exceeding an OAV ≥ 1 might be a potential synergism with other wood constituents, leading to an increased resin-like odor impression." \\ 
 +[Schreiner, Linda, Eva Ortner, and Andrea Buettner. „Nosy confirmation: reconstitution of the characteristic odor of softwood via quantitative analysis and human sensory evaluation.“ Analytical and Bioanalytical Chemistry (2019): 1-13]  
 + 
 +{{:pinus_sylvestris.jpg?600}} \\
 Masclef, A., Atlas des plantes de France, vol.3 t.393 \\ Masclef, A., Atlas des plantes de France, vol.3 t.393 \\
 [[http://plantgenera.org/species.php?id_species=795230]] [[http://plantgenera.org/species.php?id_species=795230]]
 +
 +
 +{{http://www.botanische-spaziergaenge.at/Bilder/Lumix_3/P1130670.JPG}} \\
 +Pinus sylvestris subsp. sylvestris \\ © Rolf Marschner (2009),  
 +[[http://botanische-spaziergaenge.at/viewtopic.php?f=218&t=423| www.botanische-spaziergaenge.at]]
 +
  
pinus_sylvestris_l.1464690243.txt.gz · Zuletzt geändert: 2016/05/31 12:24 von andreas

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