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Vorhergehende Überarbeitung
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agathosma_betulina_berg._pillans [2017/09/16 10:51]
andreas |
agathosma_betulina_berg._pillans [2017/09/16 11:12]
andreas |
| [[http://en.wikipedia.org/wiki/Agathosma_betulina]] | [[http://en.wikipedia.org/wiki/Agathosma_betulina]] |
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| "(+)-Limonene (about 10 %), (+)-menthone and (-)-isomenthone (both together about 40%) and the laevorotatory (S)(-)-pulegone are known as the main constituents, but not the impact flavour compounds, of buchu leaf oil. However, the constituents, responsible for the typical black currant odour are the diastereomeric isomers of 8-mercapto-p-menthan-3-one ([[http://www.thegoodscentscompany.com/data/rw1005051.html|buchu mercaptan]]) and [[http://www.thegoodscentscompany.com/data/rw1399191.html|its thiolacetates]]... The (1R)-configurated diastereomers emit a more intensive odour than the (1S)-configurated compounds, but the later diastereomers have been recognized to be peculiar to buchu leaf oil and reminiscent of black currant respectively." The qualitative sensory evaluation of the thiolacetates give strong and fruity odour impressions (trans-compounds more intensive than the cis-isomers). \\ | "(+)-Limonene (about 10 %), (+)-menthone and (-)-isomenthone (both together about 40%) and the laevorotatory (S)(-)-pulegone are known as the main constituents, but not the impact flavour compounds, of buchu leaf oil. However, the constituents, responsible for the typical black currant odour are the diastereomeric isomers of 8-mercapto-p-menthan-3-one ([[http://www.thegoodscentscompany.com/data/rw1005051.html|buchu mercaptan]]) and [[http://www.thegoodscentscompany.com/data/rw1399191.html|its thiolacetates]]... The (1R)-configurated diastereomers emit a more intensive odour than the (1S)-configurated compounds, but the later diastereomers have been recognized to be peculiar to buchu leaf oil and reminiscent of black currant respectively." \\ |
| | 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] | [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] |
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| | {{:pulegone.jpg| pulegone }} \\ pulegone | {{:isomenthone.jpg| isomenthone }} \\ isomenthone | {{:8mercapto_pmenthane3one.jpg| 8-mercapto-p-menthane-3-one }} \\ 8-mercapto- \\ p-menthane-3-one | {{:8acetylthio_pmenthane3one.jpg| 8-acetylthio-p-menthane-3-one }} \\ 8-acetylthio- \\ p-menthane-3-one | {{:disophenol.jpg| disophenol }} \\ disophenol | {{:disophenol_phi.jpg| ϕ-disophenol }} \\ ϕ-disophenol | | | {{: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 | |
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