Unterschiede

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--- allium_cepa_l [2021/03/04 15:29] – andreas
+++ allium_cepa_l [2022/06/24 07:12] (aktuell) – andreas
@@ Zeile 40: / Zeile 40: @@
 [Characterization of some Allium hybrids by aroma precursors, aroma profiles, and alliinase activity., Keusgen, M., Schulz, H., Glodek, J., Krest, I., Krüger, H., Herchert, N., Keller, J., Journal of agricultural and food chemistry, Vol.50(10), 2002, 2884-2890]
-[[http://www.thegoodscentscompany.com/data/rw1576741.html|3-Mercapto-2-methylpentan-1-ol]] was identified as a potent onion odorant, especially in cooked onions.  It was also identified in other Allium species such as chives, scallions, and leek, whereas surprisingly garlic and bear's garlic did not contain this aroma compound. \\
+[[http://www.thegoodscentscompany.com/data/rw1576741.html|3-Mercapto-2-methylpentan-1-ol]] was identified as a potent onion odorant, especially in cooked onions.  It was also identified in other Allium species such as chives, scallions, and leek, whereas surprisingly garlic and bears garlic did not contain this aroma compound. \\
 [Quantitation of the intense aroma compound 3-mercapto-2-methylpentan-1-ol in raw and processed onions (Allium cepa) of different origins and in other Allium varieties using a stable isotope dilution assay., Granvogl, M., Christlbauer, M., Schieberle, P., Journal of agricultural and food chemistry, Vol.52(10), 2004, 2797-2802]
@@ Zeile 58: / Zeile 58: @@
 "Most odorants typically activate combinations of odorant receptors, which may be narrowly or broadly tuned. Consequently, a specific receptor activation pattern will define an odor quality. In contrast, here we show that just 1 of the 391 human odorant receptors, OR2M3, responded exclusively to 3-mercapto-2-methylpentan-1-ol of the 190 key food odorants tested, with a half maximal effective concentration at submicromolar concentration. Moreover, neither the Denisovan OR2M3 nor the closest OR2M3 homologs from five species did respond to this compound. This outstanding specificity of extremely narrowly tuned human OR2M3 can explain both odor qualities and odor threshold trend within a homologous series of 3-mercapto-2-methylalkan-1-ols and suggests a modern human-specific, food-related function of OR2M3 in detecting a single onion key food odorant." \\
+-Mercapto-2-methylpentan-1-ol (0.0014 ng/L) and 3-mercapto-2-methylhexan-1-ol (0.0080 ng/L) showed extremely low thresholds. \\
 [Noe, F., Polster, J., Geithe, C., Kotthoff, M., Schieberle, P., & Krautwurst, D. (2016). OR2M3: A Highly Specific and Narrowly Tuned Human Odorant Receptor for the Sensitive Detection of Onion Key Food Odorant 3-Mercapto-2-methylpentan-1-ol. Chemical Senses, bjw118.]