| Title: | Changes in the key odorants of Italian Hazelnuts ( Coryllus avellana L. Var. Tonda Romana) induced by roasting |
| Author(s): | Burdack-Freitag A; Schieberle P; |
| Address: | "Deutsche Forschungsanstalt fur Lebensmittelchemie, Lichtenbergstrasse 4, 85748 Garching, Germany" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "Application of a comparative aroma extract dilution analysis on aroma distillates isolated from either raw Italian hazelnuts or a roasted hazelnut material produced thereof revealed 37 odor-active compounds in the raw nuts, whereas 46 aroma compounds were detected in the roasted nut material. 2-Methoxy-3-isopropylpyrazine and 2-methoxy-3,5-dimethylpyrazine as well as 5-methyl-4-heptanone predominated with the highest flavor dilution factors in the raw nuts, whereas 2-acetyl-1-pyrroline, 2-propionyl-1-pyrroline, 2-furfurylthiol, and 2-thenylthiol as well as (Z)-2-octenal, (Z)-2-nonenal, and (Z)-2-decenal showed the highest odor activities in the roasted nuts. These odorants, as well as several others, were previously unknown in hazelnuts. In addition, the intensely seasoning-like smelling 3,5,5'-trimethyl-2(5H)-furanone was identified for the first time as a food aroma compound on the basis of a newly developed synthetic route and NMR measurements" |
| Keywords: | "Chromatography, Gas Corylus/*chemistry Furans/analysis Heptanes/analysis *Hot Temperature Humans Magnetic Resonance Spectroscopy Mass Spectrometry Nuts/*chemistry Odorants/*analysis Smell Volatile Organic Compounds/analysis;" |
| Notes: | "MedlineBurdack-Freitag, Andrea Schieberle, Peter eng Comparative Study 2010/04/30 J Agric Food Chem. 2010 May 26; 58(10):6351-9. doi: 10.1021/jf100692k" |
