Unterschiede

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--- pinus_sylvestris_l [2020/02/07 10:23] – andreas
+++ pinus_sylvestris_l [2020/02/07 10:38] (aktuell) – andreas
@@ Zeile 32: / Zeile 32: @@
 [[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). \\
+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]