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. 2010 Feb 8;5(2):e9110. doi: 10.1371/journal.pone.0009110

Table 1. Names and Characteristics of the Odorants Used.

No. Odorant (Abbreviation) Chemical Characteristics Vapour Pressure (kPa at 25°C) Density (g/mL at 25°C) Purity Company
1 Acetovanillone (AC) Aromatic ketone 0.000002426 1.158 >98.0% Aldrich
2 Benzaldehyde (BA) Aromatic aldehyde 4.900 1.045 >99.5% Aldrich
3 Benzylalcohol (BO) Aromatic alcohol 0.0211 1.045 >99.0% Sigma-Aldrich
4 Butanal (BUA) Aldehyde 12.799 0.800 >99.0% Fluka
5 1-Butanol (BUO) Primary alcohol 1.1359 0.810 >99.9% Sigma-Aldrich
6 2-Butanone (BUN) Ketone 15.3321 0.805 >99.9% Fluka
7 Caryophyllene (CY) Sesquiterpene 0.0009 0.902 >98.5% Sigma
8 Citral (CI) Terpene aldehyde 0.0095 0.888 >95.0% Fluka
9 Citronellol (CO) Terpene alcohol 0.0130 0.857 >99.0% Fluka
10 β-Damascenone (DA) Norisoprenoid terpene 0.0007 0.800 95.0% Aldrich
11 2,4-Decadienal (DE) Unsaturated aldehyde 0.004 0.872 95.0% Adrich
12 Ethylacetate (EA) Ester 10.1 0.902 >99.9% Fluka
13 Ethylbenzoate (EBZ) Aromatic ester 0.024 1.045 >99.0% Aldrich
14 Ethylhexanoate (EH) Ester 0.2213 0.869 >99.0% Aldrich
15 Ethyl-3-hydroxybutyrate (EHB) Ester alcohol 0.0483 1.017 >98.0% Aldrich
16 Geranic acid (GAC) Terpene acid 0.0003 0.970 95.0% Aldrich
17 Geraniol (GE) Terpene alcohol 0.0030 0.879 >99.0% Fluka
18 1-Hexanol (HO) Primary alcohol 0.1263 0.814 >99.9% Fluka
19 2-Hexanone (HN) Ketone 1.7732 0.812 >99.5% Fluka
20 2-Isobutyl-3-methoxypyrazine (IP) Pyrazine 0.0364 0.990 99.0% Aldrich
21 Limonene (LI) Monoterpene 0.2053 0.842 >99.0% Fluka
22 Linalool (LO) Terpene alcohol 0.0121 0.870 >95.0% Fluka
23 6-Methyl-5-hepten-2-one (MHN) Unsaturated ketone 0.1707 0.855 99.0% Aldrich
24 Methyl-2-hydroxybenzoate (MHB) Aromatic ester 0.0093 1.174 >99.0% Sigma-Aldrich
25 Myrcene (MY) Monoterpene 0.3053 0.791 >95.0% Fluka
26 Nerol (NE) Terpene alcohol 0.0027 0.876 97.0% Aldrich
27 2-Nonenal (NOA) Unsaturated aldehyde 0.0038 0.846 97.0% Aldrich
28 Ocimene (OC) Monoterpene 0.1866 0.818 >90.0% Aldrich
29 2-Phenylethanol (PHE) Aromatic alcohol 0.0099 1.012 >98.0% Fluka
30 α-Pinene (PIA) Monoterpene 0.4653 0.858 98.0% Aldrich
31 β-Pinene (PIB) Monoterpene 0.32 0.866 >99.0% Aldrich
32 α-Terpineol (TP) Terpene alcohol 0.0038 0.930 90.0% Aldrich

The odorants are listed alphabetically. Odorant vapour pressures and chemical characteristics such as functional groups are also given. Racemic mixtures were used in the case of odorants that had chiral carbons.