Table 3.
Order | Compounds | OAV (concentration/ threshold) | Relative proportion * (RP, %) | Odor type / descriptor | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
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SRD-0 | SRD-1 | SRD-3 | SRD-6 | SRD-9 | SRD-0 | SRD-1 | SRD-3 | SRD-6 | SRD-9 | |||
A. Ester | ||||||||||||
1 | Methyl acetate | 0.64 | 0.63 | 11.52 | 2.55E-04 | 1.22E-04 | 4.93E-03 | 8.98E-03 | 0.46 | 1.30E-04 | 1.66E-03 | |
2 | Ethyl acetate | 1.82 | 1.63 | 51.3 | 0.05 | 4.49E-03 | 0.01 | 0.02 | 2.03 | 0.03 | 0.06 | sweet fruita, grapea, contact gluei, fruityl, pinapplel |
3 | Methyl propionate | 0.42 | 0.52 | 0.24 | 1.78E-03 | 3.21E-03 | 0.01 | 0.01 | 9.08E-04 | |||
4 | S-Methyl thioacetate | 58.6 | 80.4 | 0.45 | 1.15 | sulfurousa, cheesya | ||||||
5 | Isopropyl acetate | 0.02 | 0.01 | 0.01 | 1.70E-04 | 9.93E-05 | 4.53E-04 | |||||
6 | Ethyl propionate | 7.53 | 7.65 | 0.06 | 0.30 | |||||||
7 | Propyl acetate | 0.19 | 7.54E-04 | 0.01 | 3.85E-04 | |||||||
8 | Methyl butyrate | 168 | 195 | 12.5 | 0.07 | 1.30 | 2.79 | 0.50 | 0.03 | applea, fruityb, c, d, i, cheesei | ||
9 | Methyl 2-methylbutanoate | 218 | 217 | 132 | 10.86 | 1.68 | 3.10 | 5.25 | 5.54 | green applea, fruitya, sweeta | ||
10 | Isobutyl acetate | 0.02 | 0.01 | 0.19 | 3.88E-03 | 1.47E-04 | 2.09E-04 | 0.01 | 1.98E-03 | strawberrye, light fruityi, floweryi | ||
11 | Methyl isovalerate | 24.9 | 25.9 | 3.54 | 0.19 | 0.37 | 0.14 | fruitya, applea, pineapplea | ||||
12 | Ethyl butyrate | 6,160 | 4,576 | 686 | 6.00 | 47.5 | 65.4 | 27.2 | 3.06 | fruitya, b, c, d, e, i, sweeta, b, i, pineapplea, ester-likeb, strawberrye, cheesei, fruity sweetm, p, r, u | ||
13 | Butyl acetate | 0.18 | 0.19 | 0.14 | 2.56E-04 | 1.35E-03 | 2.68E-03 | 0.01 | 1.31E-04 | fruitya, bananaa, applei, gluei | ||
14 | Isopropyl butyrate | 4.95 | 4.18 | 0.04 | 0.06 | fruitya, sweeta, pineapplea | ||||||
15 | Ethyl 2-methylbutyrate | 942 | 356 | 993 | 46.9 | 7.26 | 5.08 | 39.3 | 23.9 | soura, cheesya, sweatya, fruityd | ||
16 | Ethyl isovalerate | 1,592 | 755 | 405 | 7.88 | 12.3 | 10.8 | 16.0 | 4.02 | fruitya, d, applea, pineapplea, sweet fruite | ||
17 | Isoamyl acetate | 21.4 | 18.2 | 43.5 | 0.32 | 0.16 | 0.26 | 1.72 | 0.16 | |||
18 | Ethyl valerate | 21.9 | 5.19 | 0.17 | 0.07 | |||||||
19 | Methyl hexanoate | 30.1 | 11.9 | 0.73 | 0.23 | 0.17 | 0.03 | fruitya, b, i, pineapplea, ester-likeb | ||||
20 | trans-2-Hexenyl acetate | 0.90 | 0.04 | 0.01 | 0.001 | |||||||
21 | Ethyl hexanoate | 3,608 | 683 | 103.7 | 0.14 | 27.8 | 9.77 | 4.11 | 0.07 | fruitya, b, i, sweeta, pineapplea, ester-likeb, green appleb, fruit gumi | ||
22 | Hexyl acetate | 54.7 | 12.7 | 2.34 | 0.42 | 0.18 | 0.09 | fruitya, i, green applea, bananaa, i, applei, peari | ||||
23 | Methyl octanoate | 0.16 | 0.02 | 1.23E-03 | 3.45E-04 | Sweet fruitye | ||||||
|
||||||||||||
ΣConcentration (ester) | 12,917 | 6,942 | 2,453 | 72.2 | 4.61E-03 | 99.6 | 99.3 | 97.2 | 36.8 | 0.06 | ||
| ||||||||||||
B. Alcohol | ||||||||||||
1 | Ethyl alcohol | 0.01 | 1.69 | 0.05 | 4.25E-04 | 0.86 | 0.67 | |||||
2 | Isopropyl Alcohol | 3.37E-04 | 1.76E-04 | 1.74E-03 | 3.57E-03 | 0.01 | 2.60E-06 | 2.52E-06 | 6.90E-05 | 1.82E-03 | 0.14 | fruityl |
3 | n-Propyl alcohol | 0.01 | 0.02 | 0.02 | 5.02E-04 | 0.01 | 0.20 | Sweet (candy)l | ||||
4 | Isobutyl alcohol | 0.04 | 114 | 0.38 | 1.52E-03 | 58.3 | 5.22 | Plasticl, badl | ||||
5 | Isopropenylethyl alcohol | 9.64E-04 | 1.79E-03 | 4.92E-04 | 0.02 | |||||||
6 | 3-Methyl-1-butanol | 0.02 | 0.03 | 1.13 | 0.60 | 0.97 | 1.87E-04 | 4.10E-04 | 0.04 | 0.31 | 13.2 | bittere, harshe, k, Chemicalk, stalek, Alcoholicr, greenr, Fusel oils, pomaces |
7 | 2-Methyl-1-butanol | 0.23 | 0.48 | 0.12 | 6.49 | Alcoholics, greens, Fusel oilt, pomacet | ||||||
8 | n-Pentanol | 2.12E-03 | 1.84E-03 | 0.001 | 0.02 | |||||||
9 | 1-Chloro-2-propanol | 0.02 | 0.08 | 1.54E-04 | 1.15E-03 | |||||||
10 | n-Hexanol | 0.01 | 0.03 | 3.45E-03 | 0.02 | 9.16E-05 | 1.05E-03 | 1.76E-03 | 0.34 | winey-fruityf, Greeni, k, r, heavyi, nutsi, grassk, freshk | ||
11 | Linalool | 27.4 | 27.0 | 0.21 | 0.39 | citrusa, fruitya, e, florala, floweryb, k, sweetb, lemonc, floral-lavenderf, rosek | ||||||
|
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ΣConcentration or its RC (alcohol) | 27.4 | 27.1 | 1.22 | 117 | 1.94 | 0.21 | 0.39 | 0.05 | 59.6 | 26.3 | ||
| ||||||||||||
C. Aldehyde | ||||||||||||
1 | Acetaldehyde | 8.70 | 8.85 | 56.9 | 3.92 | 2.90 | 6.70E-02 | 0.13 | 2.25 | 2.00 | 39.4 | green applea, fruityj, pungentj, chemicalk, alcoholk, aldehydek, acetaldehydek, pungentk, v, greenn, o, t, sweetv |
2 | Allyl aldehyde (Acrolein) | 0.03 | 0.04 | 1.49E-02 | 0.54 | |||||||
3 | Methylacryl aldehyde | 0.21 | 0.39 | 0.11 | 5.31 | |||||||
4 | Isobutyraldehyde | 0.01 | 0.09 | 3.01E-03 | 1.27 | greenl, maltyl, floralt | ||||||
5 | Isovaleraldehyde | 0.46 | 1.09 | 0.23 | 14.9 | greenn, o, maltyn, o | ||||||
ΣConcentration or its RC (aldehyde) | 8.70 | 8.85 | 56.9 | 4.63 | 4.52 | 6.70E-02 | 0.13 | 2.25 | 2.36 | 61.4 | ||
D. Ketone | ||||||||||||
1 | Acetone | 0.06 | 0.07 | 5.34E-03 | 1.75E-04 | 6.68E-04 | 4.61E-04 | 1.07E-03 | 2.12E-04 | 8.93E-05 | 9.06E-03 | aldehydicg, wood pulpl, hayl |
2 | Methyl ethyl ketone | 1.48E-04 | 1.73E-04 | 7.56E-05 | 2.35E-03 | Butterh, sweeth, chocolateh, Butterscotchl | ||||||
3 | Methyl n-propyl ketone | 0.03 | 0.03 | 2.69E-04 | 4.34E-04 | thinnerb, acetoneb, kerosenei, solventsi, orange peelq, sweetw, x, fruityw, x | ||||||
4 | Methyl Isobutyl Ketone | 0.01 | 0.01 | 2.06E-03 | 6.63E-05 | 2.00E-04 | 8.17E-05 | |||||
5 | Methyl amyl ketone | 0.04 | 0.05 | 3.60E-03 | 4.34E-03 | 3.08E-04 | 6.61E-04 | 1.83E-03 | 0.06 | meatyb, danish blue cheesei, greent, Animalsr, bluer, cheeser | ||
ΣConcentration or its RC (ketone) | 0.143 | 0.165 | 7.40E-03 | 3.92E-03 | 5.18E-03 | 1.10E-03 | 2.36E-03 | 2.93E-04 | 2.00E-03 | 0.07 | ||
E. Fatty acid | ||||||||||||
1 | Acetic acid | 17.37 | 13.23 | 12.15 | 1.45 | 0.60 | 1.34E-01 | 0.19 | 0.48 | 0.74 | 8.08 | sourd, vinagere, i, k |
2 | 2-PROPYNOIC ACID | 0.74 | 5.71E-03 | |||||||||
ΣConcentration or its RC (fatty acid) | 18.1 | 13.2 | 12.1 | 1.45 | 0.60 | 0.14 | 0.19 | 0.48 | 0.74 | 8.08 | ||
E.etc. | ||||||||||||
1 | n-Pentane | 3.84E-04 | 9.29E-06 | 6.97E-05 | 2.96E-06 | 4.74E-06 | 9.46E-04 | |||||
2 | Ethyl ether | 2.12E-03 | 1.23E-03 | 4.39E-03 | 8.40E-05 | 6.26E-04 | 0.06 | |||||
3 | 1,3-Hexadiene | 0.01 | 8.86E-04 | 9.65E-05 | 1.27E-05 | |||||||
4 | n-Hexane | 5.55E-05 | 4.67E-05 | 4.64E-05 | 3.67E-04 | 4.28E-07 | 6.68E-07 | 1.84E-06 | 0.005 | |||
5 | Toluene | 1.60E-03 | 0.02 | |||||||||
6 | Styrene | 0.29 | 0.34 | 0.55 | 0.09 | 0.03 | 2.21E-03 | 0.00 | 0.02 | 0.04 | 0.42 | |
2,5-Dimethyl-4-methoxy-3(2H)-furanone | ||||||||||||
ΣConcentration or its RC (etc) | 0.73 | 0.34 | 0.56 | 0.90 | 0.31 | 0.01 | 0.00 | 0.02 | 0.46 | 4.15 | ||
ΣConcentration or its RC (all) | 12,972 | 6,992 | 2,524 | 196 | 7.37 | 100 | 100 | 100 | 100 | 100 |
RP = [OAV (n) / OAV (sum of main VOCs) at the exp day] x 100
References:
Du et al. [1],
Ulrich et al. [2],
Schulbach et al. [28],
Schieberle and Hofmann [29],
Aznar et al. [30],
Buchbauer et al. [31],
Cai et al. [32],
Clausen et al. [33],
Larsen and Poll [34],
Semmelroch and Grosch (1995) [35],
Komes et al. [36],
Arora et al. [37],
Carpino and Mallia [38],
Kubck ova and Grosch [39],
Kubícková and Grosch [40],
Le Quéré et al. [41],
Moio and Addeo [42],
Moio et al. [43],
Moio et al. [44],
Rychlik and Bosset [45],
Christensen and Reineccius [46],
Milo and Reineccius [47],
Preininger and Grosch [48],
Preininger et al. [49]