TY - JOUR
T1 - Comparison of three sample preparation methods on the recovery of volatiles from taheebo (Tabebuia impetiginosa Martius ex DC)
AU - Park, Byeoung Soo
AU - Lee, Kwang Geun
AU - Takeoka, Gary R.
PY - 2004/7
Y1 - 2004/7
N2 - The volatile constituents of taheebo (the dried inner bark of Tabebuia impeliginosa Martius ex DC) were isolated by three methods: solvent-assisted flavour evaporation (SAFE); steam distillation under reduced pressure, followed by continuous liquid-liquid extraction (DRP-LLE); and high-flow dynamic headspace sampling (including closed-loop stripping) (DHS). The extracts were analysed qualitatively and quantitatively by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The masses of total volatile components recovered from 50 g taheebo by SAFE, DRP-LLE and DHS were 26.3 ± 2.0, 19.4 ± 1.0 and 1.2 ± 0.2 mg, respectively. The major constituents isolated with the SAFE method were 4-methoxyphenol (121.65 μg/g), 4-methoxybenzyl alcohol (96.49 μg/g), 1,2-propanediol (92.95 μg/g) and 4-methoxybenzaldehyde (31.33 μg/g). The DRP-LLC method yielded 4-methoxybenzaldehyde (64.54 μg/g), 4-methoxyphenol (42.30 μg/g), 5-(2-propenyl)-1,2,3-trimethoxybenzene (elemicin; 41.22 μg/g), and 1-methoxy-4-(1E)-1-propenylbenzene (trans-anethole; 39.16 μg/g) as major volatiles, while the main compounds recovered with the DHS method were 4-methoxybenzaldehyde (2.61 μg/g), 4-methoxyphenol (2.10 μg/g), 2-methyl-5-(1-methylethenyl)-2-cyclohexen-1-one (carvone; 1.71 μg/g) and 3,7-dimethyl-1,6-octadien-3-ol (linalool; 1.64 μg/g).
AB - The volatile constituents of taheebo (the dried inner bark of Tabebuia impeliginosa Martius ex DC) were isolated by three methods: solvent-assisted flavour evaporation (SAFE); steam distillation under reduced pressure, followed by continuous liquid-liquid extraction (DRP-LLE); and high-flow dynamic headspace sampling (including closed-loop stripping) (DHS). The extracts were analysed qualitatively and quantitatively by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The masses of total volatile components recovered from 50 g taheebo by SAFE, DRP-LLE and DHS were 26.3 ± 2.0, 19.4 ± 1.0 and 1.2 ± 0.2 mg, respectively. The major constituents isolated with the SAFE method were 4-methoxyphenol (121.65 μg/g), 4-methoxybenzyl alcohol (96.49 μg/g), 1,2-propanediol (92.95 μg/g) and 4-methoxybenzaldehyde (31.33 μg/g). The DRP-LLC method yielded 4-methoxybenzaldehyde (64.54 μg/g), 4-methoxyphenol (42.30 μg/g), 5-(2-propenyl)-1,2,3-trimethoxybenzene (elemicin; 41.22 μg/g), and 1-methoxy-4-(1E)-1-propenylbenzene (trans-anethole; 39.16 μg/g) as major volatiles, while the main compounds recovered with the DHS method were 4-methoxybenzaldehyde (2.61 μg/g), 4-methoxyphenol (2.10 μg/g), 2-methyl-5-(1-methylethenyl)-2-cyclohexen-1-one (carvone; 1.71 μg/g) and 3,7-dimethyl-1,6-octadien-3-ol (linalool; 1.64 μg/g).
KW - Dynamic headspace sampling (DHS)
KW - Pau d'arco
KW - Solvent-assisted flavour evaporation (SAFE)
KW - Volatile components
UR - http://www.scopus.com/inward/record.url?scp=3242794272&partnerID=8YFLogxK
U2 - 10.1002/ffj.1345
DO - 10.1002/ffj.1345
M3 - Article
AN - SCOPUS:3242794272
SN - 0882-5734
VL - 19
SP - 287
EP - 292
JO - Flavour and Fragrance Journal
JF - Flavour and Fragrance Journal
IS - 4
ER -