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Enantiomer separation of the characteristic odorants in Japanese fresh rhizomes of Zingiber officinale Roscoe (ginger) using multidimensional GC system and confirmation of the odour character of each enantiomer by GC–olfactometry
Author(s) -
Nishimura Osamu
Publication year - 2001
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/1099-1026(200101/02)16:1<13::aid-ffj939>3.0.co;2-m
Subject(s) - chemistry , linalool , borneol , chromatography , gas chromatography , fraction (chemistry) , enantiomer , essential oil , organic chemistry , medicine , alternative medicine , traditional chinese medicine , pathology
The fresh rhizomes of ginger ( Zingiber officinale Roscoe) grown in Japan were extracted with n ‐hexane. The extract was fractionated into a hydrocarbon fraction (hexane fraction) and an oxygenated hydrocarbon fraction (CH 2 Cl 2 fraction). The CH 2 Cl 2 fraction was subjected to GC–Olfactometry (GC–O) and GC–mass spectrometry (MS) analyses. It was considered that monoterpenoids, linalool, 4‐terpineol, isoborneol and borneol, as well as geranial and neral, might contribute to the characteristic odour of the Japanese fresh ginger. Each enantiomer of linalool, 4‐terpineol, isoborneol and borneol were easily separated using the off‐line multidimensional GC (MDGC) system. Simultaneously, the GC–O was carried out and the odour character of each enantiomer was confirmed. The thermal desorption cold trap injector (TCT) was used as a part of the off‐line MDGC system. It was revealed that the TCT can be used not only for headspace analysis but also as a part of an MDGC system. Copyright © 2001 John Wiley & Sons, Ltd.