Atsushi Joichi, Yasuko Nakamura, Shinichiro Haze, Takahiro Ishikawa, Hiroyuki Atoji, Takashi Nishida and Kazutoshi Sakurai
The volatile constituents of Blue Moon and Blue Perfume species, which were classified blue type depend on its scent in the HT roses, were analyzed using Aromascope® technology and solvent extraction method followed by GC-MS analysis. And geraniol, citronellol, nerol, 1,3-dimethoxy-5-methylbenzene (DMMB), dihydro-β-ionol and geranial were identified as the main odor components. Then, three components were newly identified, 2-isopropyl-4-methyl-thiazole with a characteristic pungent vegetable tropical notes, (Z)-yuzu lactone, and methyl cis-(Z)-jasmonate. The chiral analysis results were followings in both rose flowers. The ratio of (S)-isomer vs (R)-isomer of linalool was 8:92. Only (3S)-enantiomer was detected for trans-nerolidol. The ratio of (2S)-isomer vs (2R)-isomer in theaspirane A and theaspirane B were about 96:4. Finally, no absolute stereochemistry determined for dihydro-β-ionol, only (+)-isomer was present.