Poursuivant notre Ctude de l'ardme de thC noir [l], nous y avons identifik encore 32 substances dont la plupart ont CtC dCcrites rCcemment par BONDAROVICV et al. [2], mais dont sept sont nouvelles. Cinq d'entre celles-ci n'ont, A notre connaissance, jamais CtC citCes : 1'kthyl-l-formyl-2-#yrrole, le
Sur la composition de l'arǒme de the noir V
✍ Scribed by Paul Cazenave; Ian Horman
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- German
- Weight
- 188 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Methyl anthranilate, geranylacetone and five lactones: γ‐valerolactone, γ‐heptalactone, γ‐décalactone, δ‐décalactone, 5‐hydroxy dec‐7‐enoic acid‐lactone have recently been identified in black tea aroma by means of GC./MS. and by sniffing the effluent from a gas chromatograph. Their intrinsic character, rather fruity and flowery, gives a certain freshness and an agreable note to the aroma.
📜 SIMILAR VOLUMES
## Abstract 17 substances were shown to be present in the aroma of black tea. This brings the total number of substances now identified to 187. Many of these new aromatic constituents are present only in traces. Nevertheless they possess an appreciable olfactive intensity whose flowery and/or fruit
1) Note ajoutde lors de la correction des tpreuves: Nous venons de prendre connaissance d'un article de RIZZI [UaJ qui a identifie dans le beurre de cacao 9 composes pyraziniqugs: mkthylpyrazine, dim&hyl-Z,S-pyrazine, tthyl-2-rndthyl-5-pyrazine, trimdthylpyrazine, dimdthyl-2,5-Bthyl-3-pyrazine, dimt
NMR. spectrum shows the presence of three quarternary methyl groups with a fourth methyl group attached to a double bond. The methylvinylfuran part of the davanone NMR. spectrum1) is almost unchanged, so we formulated a working hypothesis of different isomers of structure 3 as representing the isome