caa a22 4500 463157028 CHVBK 20180406164737.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s00217-006-0507-6 doi (NATIONALLICENCE)springer-10.1007/s00217-006-0507-6 Comparison of the most odour-active volatiles in different hop varieties by application of a comparative aroma extract dilution analysis [Elektronische Daten] [Martin Steinhaus, Wolfgang Wilhelm, Peter Schieberle] Application of a comparative aroma extract dilution analysis on the volatiles isolated from five different hops (Hallertau Perle, Hallertau Hersbrucker Spät, Slowenian Golding, Hallertau Smaragd, US Cascade) revealed linalool and myrcene with the highest Flavour Dilution (FD)-factors in all varieties, followed by 2-isopropyl-3-methoxypyrazine, 3-methylbutanoic acid and geraniol. Some odourants, however, showed high FD-factors only in certain varieties, for example, (5Z)-octa-1,5-dien-3-one and germacrene B in Hersbrucker Spät, (3E,5Z)-undeca-1,3,5-triene in Hersbrucker Spät and Cascade and nonanal in Cascade. The overall odour profile of the Cascade sample clearly differed from the other varietes, and was dominated by a black currant like odour note. The identification experiments revealed 4-methyl-4-sulfanylpentan-2-one, so far unknown as hop constituent, as key contributor to this odour. In addition, an odour-active undecatetraene was present, in particular, in Perle and Cascade. Synthesis and structural assignment of the four stereoisomers of (3E)-undeca-1,3,5,9-tetraene allowed the identification of the fresh, pineapple-like smelling compound as (3E,5Z,9E)-undeca-1,3,5,9-tetraene. Among the four isomers synthesised, this compound showed by far the lowest odour threshold of 0.01ng/L in air. Springer-Verlag, 2006 Hops nationallicence Aroma extract dilution analysis nationallicence 4-methyl-4-sulfanylpentan-2-one nationallicence (3 E ,5 Z ,9 Z )-undeca-1,3,5,9-tetraene nationallicence (3 E ,5 E ,9 Z )-undeca-1,3,5,9-tetraene nationallicence (3 E ,5 Z ,9 E )-undeca-1,3,5,9-tetraene nationallicence (3 E ,5 E ,9 E )-undeca-1,3,5,9-tetraene nationallicence Steinhaus Martin Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstraße 4, 85748, Garching, Germany aut Wilhelm Wolfgang Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstraße 4, 85748, Garching, Germany aut Schieberle Peter Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstraße 4, 85748, Garching, Germany aut European Food Research and Technology Springer-Verlag 226/1-2(2007-11-01), 45-55 1438-2377 226:1-2<45 2007 226 217 https://doi.org/10.1007/s00217-006-0507-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00217-006-0507-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Steinhaus Martin Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstraße 4, 85748, Garching, Germany aut NATIONALLICENCE 700 1- Wilhelm Wolfgang Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstraße 4, 85748, Garching, Germany aut NATIONALLICENCE 700 1- Schieberle Peter Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstraße 4, 85748, Garching, Germany aut NATIONALLICENCE 773 0- European Food Research and Technology Springer-Verlag 226/1-2(2007-11-01), 45-55 1438-2377 226:1-2<45 2007 226 217 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer