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--- agathosma_betulina_berg._pillans [2026/02/21 16:30] – andreas
+++ agathosma_betulina_berg._pillans [2026/02/21 16:32] (aktuell) – andreas
@@ Zeile 5: / Zeile 5: @@
 "The essential oils and extracts of the leaves are used as flavoring for teas, candy, and a liquor known as buchu brandy in South Africa. The two primary chemical constituents of the oils of A. betulina are [[http://www.thegoodscentscompany.com/data/rw1003111.html|isomenthone]] and diosphenol. The extract is said to taste like blackcurrant." [[http://en.wikipedia.org/wiki/Agathosma_betulina|wikipedia]]
+| {{:pulegone_minus.jpg| (-)-pulegone }} \\ (-)-pulegone | {{:isomenthone_minus.jpg| (-)-isomenthone }} \\ (-)-isomenthone | {{:8mercapto_pmenthane3one.jpg| 8-mercapto-p-menthane-3-one }} \\ (1S)-8-mercapto- \\ p-menthane-3-one | {{:8acetylthio_pmenthane3one.jpg| 8-acetylthio-p-menthane-3-one }} \\ (1S)-8-acetylthio- \\ p-menthane-3-one | {{:diosphenol.jpg| diosphenol }} \\ diosphenol | {{:diosphenol_phi.jpg| ϕ-diosphenol }} \\ ϕ-diosphenol |
 By means of distillation and chromatography, Buchu Leaf Oil was separated into numerous fractions. p-Menthane-8-thiol-3-one (8-mercapto-p-menthan-3-one, buchu mercaptan) was identified as a specific odor-determining ingredient of buchu leaf oil. \\
@@ Zeile 15: / Zeile 17: @@
 The qualitative sensory evaluation of the thiolacetates give strong and fruity odour impressions (trans-compounds more intensive than the cis-isomers). \\
 [Stereoisomeric flavour compounds. Part LVII: The stereoisomers of 3‐Oxo‐p‐menthane‐8‐thiol acetate, simultaneously stereoanalysed with their corresponding thiols., Köpke, T., Schmarr, H.G., Mosandl, A., Flavour and fragrance journal, Vol.7(4), 1992, 205-211]
-| {{:pulegone_minus.jpg| (-)-pulegone }} \\ (-)-pulegone | {{:isomenthone_minus.jpg| (-)-isomenthone }} \\ (-)-isomenthone | {{:8mercapto_pmenthane3one.jpg| 8-mercapto-p-menthane-3-one }} \\ (1S)-8-mercapto- \\ p-menthane-3-one | {{:8acetylthio_pmenthane3one.jpg| 8-acetylthio-p-menthane-3-one }} \\ (1S)-8-acetylthio- \\ p-menthane-3-one | {{:diosphenol.jpg| diosphenol }} \\ diosphenol | {{:diosphenol_phi.jpg| ϕ-diosphenol }} \\ ϕ-diosphenol |
 "The chemical composition of three different buchu essential oils which were derived from Agathosma betulina, A. crenulata and an A betulina x crenulata hybrid respectively (fam. Rutaceae) was investigated by means of chromatographic and spectroscopic methods. Approximately 40 compounds, all known, were detected. A. betulina was characterized by 31% of (iso)menthone, 41% (ϕ)-diosphenol and 3% of the olfactory important cis- and trans-8-mercapto-p-menthane-3-ones. The A. crenulata oil contained very high quantities of pulegone (54%) besides considerable quantities of trans-8-acetylthio-p-menthan-3-one (7%). The hybrid showed, apart from a very high concentration of (iso)menthone (55%), an intermediate composition." \\