Sesquiterpen-Kohlenwasserstoffe in Trauben

Abstract

After separation by column chromatography on silicagel and preparative gas chromatography 14 sesquiterpene hydrocarbons have been identified in aroma extracts from grapes by gas chromatography--mass spectrometry: alpha-copaene, beta-ylangene, beta-bourbonene, beta-caryophyllene, alpha-guaiene, alpha-humulene, alpha- and gamma-muurolene, germacren D, beta-selinene, alpha-farnesene, gamma- and delta-cadinene and calamenene.

SPE-GC determination of aromatic compounds in two varieties of white grape during ripening

“…They are mainly derived from the grape, where other prominent flavour components of great importance, e. g. hydrocarbons, norisoprenoids, and some alcohols, are also found. Subtle differences between the profiles of volatile components can be responsible for the varietal character of different aromatic cultivars, and the aroma-active compounds present in grapes, mainly the monoterpenes and norisoprenoids, enable classification of neutral and aromatic varieties [1]. These volatile substances are Presented at: 23 rd International Symposium on Chromatography, London, UK, October 1 5, 2000 synthesized during berry maturation and are qualitatively and quantitatively influenced by cultivar, soil, climate, and viticulture practices [2 6], with grape variety having the strongest influence on the aromatic composition of wine.…”

Flavours and Fragrances

“…[54] Also, thermolysis of β-carotene produces β-ionone in significant amounts. [55] Later it has been proven that β-ionone could also be produced enzymatically from carotene. [56] For example, a portion of carotene in green tea leaves was transformed during fermentation (to produce black tea) into β-ionone.…”

Characterisation and differentiation of grape brandies by multiple discriminant analysis

“…7 The separation of various beer types based on gas chromatographic data has also been successfully achieved using multiple discriminant analysis. *…”