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artemisia_pallens_wall._ex_dc [2015/10/12 14:25]
andreas
artemisia_pallens_wall._ex_dc [2015/10/12 14:26] (aktuell)
andreas
Zeile 17: Zeile 17:
 [H. Surburg und J. Panten: Common Fragrance and Flavor Materials: preparation,​ properties, and uses. Wiley-VCH, Weinheim 2006, 204]  [H. Surburg und J. Panten: Common Fragrance and Flavor Materials: preparation,​ properties, and uses. Wiley-VCH, Weinheim 2006, 204] 
  
-"A number of important observations can be made from the olfactometry evaluation of the crude natural davana oil: (1) major components do not necessarily correlate with major sensory responses; (2) powerful sensory responses are observed for minor/trace constituents;​ (3) davanone with a value of 40 is not the major sensory component, yet it affords the greatest MS response; (4) eight other components had intensities greater than that of davanone; and (5) a number of powerful sensory components are essentially below TIC detection limits and, hence, remain unidentified at this time. In addition, all of the sensory attributes identified in the GC/O+"The oil of davana is produced from dried davana plants by steam distillation with yields of approximately 0.2%. The oil is a brownish or dark greenish viscous liquid, very aromatic, with a persistent odor somewhat reminiscent of bourbon... \\ 
 +A number of important observations can be made from the olfactometry evaluation of the crude natural davana oil: (1) major components do not necessarily correlate with major sensory responses; (2) powerful sensory responses are observed for minor/trace constituents;​ (3) davanone with a value of 40 is not the major sensory component, yet it affords the greatest MS response; (4) eight other components had intensities greater than that of davanone; and (5) a number of powerful sensory components are essentially below TIC detection limits and, hence, remain unidentified at this time. In addition, all of the sensory attributes identified in the GC/O
 analyses were positive in nature and could be described as fruity, spicy, musty, green, sweet, and pleasant. These olfactometry results are in agreement with the literature in that davanone has been reported to have little to no aroma. On the other hand, minor components are thought to contribute significantly to the aroma of davana oil." \\ analyses were positive in nature and could be described as fruity, spicy, musty, green, sweet, and pleasant. These olfactometry results are in agreement with the literature in that davanone has been reported to have little to no aroma. On the other hand, minor components are thought to contribute significantly to the aroma of davana oil." \\
 Fruit esters like 2-methylbutyl 2-methylbutyrate (4.5%), propyl 2-methylbutyrate (3.8%), propyl 3-methylbutyrate (3.0%) and pentyl 3-methylbutyrate (2.1%) as well as some cinnamates and furanones [5,​5-dimethyl-2(5H)-furanone (1.6%), 5-ethenyldihydro-5-methyl-2(3H)-furanone (1.2%)] were found in the headspace above davana oil. \\ Fruit esters like 2-methylbutyl 2-methylbutyrate (4.5%), propyl 2-methylbutyrate (3.8%), propyl 3-methylbutyrate (3.0%) and pentyl 3-methylbutyrate (2.1%) as well as some cinnamates and furanones [5,​5-dimethyl-2(5H)-furanone (1.6%), 5-ethenyldihydro-5-methyl-2(3H)-furanone (1.2%)] were found in the headspace above davana oil. \\
artemisia_pallens_wall._ex_dc.txt · Zuletzt geändert: 2015/10/12 14:26 von andreas