GC-FTIR and GC-MS in odour analysis of essential oils

Abstract

Abstract. The analysis of odour components in East Indian SandalwoodOil ( Santalum album L.) and in Patchouli Oil ( Pogostemon cablin Benth.) based on GC-, GC-FTIR-and GC-MS-data resulted in the identification of a~-santalene, a'-santalal, fl-santalal, epi-fl-santalal, a'-santalol, fl-santalol, (E)-fl-santalol, c~-bergamotol and spirosantalol in Sandalwood Oil and of (-)-patchoulol, c~-guaiene, o~-patchoulene, seychellene, c~-bulnesene, norpatchoulenol and pogostol in Patchouli Oil as the most intense aroma compounds of these oils.

Phytochemistry of the heartwood from fragrant Santalum species: a review

“…essential oils. To characterize these compounds, Nikiforov et al [76,77] performed GC-O experiments on S. album essential oil and described seven substances as the most intense odorant components in addition to 90 and 92: a-santalene 47, (Z)-asantalal 140, (Z)-b-santalal 144, (E)-epi-b-santalal 143, (E)-bsantalol 94, a-bergamotol (isomer not specified) and spirosantalol 97. Mookherjee reported later the olfactive properties of 19 constituents of East Indian and Java sandalwood oil, among which five compounds were selected as having 'the best sandalwood odour' together with b-santalol: 99 (fatty, sandalwood), 142 (sexy, sandalwood), 146 (woody, ambergris), 167 (woody, amber-like, ionone-like) and 169 (sweaty, sexy, woody).…”

“…An original combination of this technique with MS and selective catalytic hydrogenation/ deuteration allowed the presence of dihydro-santalols 88 and 89 to be confirmed in S. album essential oil, without actually isolating them. [25] Non volatile compounds (e.g. 115, 126, 213, 220 and 234) were identified mainly in solvent extracts, and identified after isolation and structure determination by up-to-date NMR techniques.…”

“…25 A, [39] AC [9] 60 a-Terpineol A, [18] S, [29] I [33] * 64 a-Santenol A, [18,32] A, [18] S, [29] I [33] [18] AC [9] 70 (E,E)-Farnesol 106-28-5 222.37 S, [37,40] AC [9] 71 (E)-Nerolidol 40716-66-3 b 222.37 A, [10] S, [37] AC, [9] I [33] …”

Synthesis of New exo‐ and endo‐3,8‐Dihydro‐β‐santalols and Other Norbornyl‐Derived Alcohols

“…The crude product containing 96% of endo-9a (GC) was isolated in 61% yield after flash CC (SiO 2 ; hexane/AcOEt 9 : 1). (21).…”

“…2) have not been yet described. The direct hydrogenation of b-santalol has been reported to afford a non-characterized mixture [21].…”