Table 8.
Mean relative amounts of volatiles identified in different durian varieties.
| Compounds | Relative Amount in ng per g fresh weight | ||||||
|---|---|---|---|---|---|---|---|
| Malaysian Variety | Indonesian Variety | ||||||
| D101 | D2 | D24 | Hejo | Matahari | Ajimah | Sukarno | |
| Sulphur compounds | |||||||
| Ethanethiol [7,42] | 5480.00 | 4260.00 | 3550.00 | ND | 5.40 | 50.70 | 36.40 |
| Propanethiol [7,42] | 5000.00 | 2720.00 | 2720.00 | ND | 18.00 | 31.10 | ND |
| Methyl ethyl disulphide [42] | NA | NA | NA | ND | ND | ND | 11.50 |
| Diethyl disulphide [7,42] | 12420.00 | 1585.00 | 18760.00 | 24.40 | 323.90 | 245.20 | 188.40 |
| Ethyl propyl disulphide [7,42] | 3630.00 | 3350.00 | 9040.00 | 2.30 | 43.20 | 11.30 | 4.60 |
| Bis(ethylthio)methane [42] | NA | NA | NA | 49.30 | 105.40 | 246.10 | 118.20 |
| Diethyl trisulphide [7,42] | 5970.00 | 14680.00 | 2520.00 | 10.20 | 185.50 | 213.60 | 72.30 |
| 3,5-Dimethyl-1,2,4- trithiolane (isomer 1) [7,42] | 470.00 | 1460.00 | 1740.00 | 1.50 | 10.60 | 20.80 | 2.00 |
| 3,5-Dimethyl-1,2,4- trithiolane (isomer 2) [7,42] | 590.00 | 1470.00 | 1710.00 | 1.00 | 10.60 | 17.70 | 1.10 |
| 1,1-Bis(methylthio)- ethane [7] | NA | NA | NA | 5.30 | 14.50 | 5.80 | 3.00 |
| 1,1-Bis(ethylthio)-ethane [7,42] | 420.00 | 490.00 | 710.00 | 1.90 | 15.80 | 5.90 | 10.20 |
| 3-Mercapto-2- methylpropanol[7] | NA | NA | NA | 2.50 | 21.90 | 2.80 | 4.70 |
| Dipropyl trisulphide [7] | 120.00 | 160.00 | 110.00 | NA | NA | NA | NA |
| Dipropyl disulphide [7] | 200.00 | 110.00 | 1030.00 | NA | NA | NA | NA |
| 1-(ethylthio)-1-(methylthio)-Ethane [7] | 660.00 | 140.00 | 660.00 | NA | NA | NA | NA |
| S-propyl ethanethioate [7] | 340.00 | 60.00 | 320.00 | NA | NA | NA | NA |
| S-ethyl ethanethioate [7] | 90.00 | ND | 310.00 | NA | NA | NA | NA |
| 1-(methylthio)-propane [7] | 270.00 | ND | 130.00 | NA | NA | NA | NA |
| Total | 35660.00 | 30485.00 | 43310.00 | 98.40 | 754.80 | 851.00 | 452.40 |
| Alcohols | |||||||
| Ethanol [7,42] | 720.00 | 1090.00 | 590.00 | 419.90 | 688.80 | 843.40 | 1091.30 |
| 2-Methyl-1-butanol [42] | NA | NA | NA | ND | ND | 17.40 | ND |
| 3-Methyl-1-butanol [42] | NA | NA | NA | 10.50 | ND | ND | 14.60 |
| 2,3-Butanediol [42] | NA | NA | NA | 4.60 | ND | ND | 11.70 |
| Total | 720.00 | 1090.00 | 590.00 | 435.00 | 688.80 | 860.80 | 1117.60 |
| Ketones | |||||||
| 3-Hydroxy-2-butanone [42] | NA | NA | NA | 56.20 | 84.20 | 71.30 | 64.10 |
| Aldehydes | |||||||
| Acetaldehyde [42] | NA | NA | NA | 44.90 | 62.20 | 33.90 | ND |
| Esters | |||||||
| Ethyl acetate [7,42] | 280.00 | 610.00 | 930.00 | 28.10 | 52.40 | 34.80 | 31.20 |
| Methyl propanoate [7,42] | 970.00 | 880.00 | 700.00 | 16.40 | 52.20 | ND | ND |
| Ethyl propanoate [7,42] | 3110.00 | 1850.00 | 2530.00 | 386.60 | 719.50 | 742.30 | 0.00 |
| Methyl-2-methylbutanoate [7,42] | 4070.00 | 2330.00 | 2290.00 | 86.20 | 105.60 | 85.40 | 24.90 |
| Ethyl butanoate [7,42] | 850.00 | 2220.00 | 40.00 | 73.20 | 131.90 | 252.30 | 83.20 |
| Propyl propanoate [7,42] | 4630.00 | 1740.00 | 3810.00 | ND | 88.40 | ND | ND |
| Ethyl 2-methylbutanoate [7,42] | 460.00 | 510.00 | 500.00 | 2938.40 | 2373.40 | 3846.70 | 1085.90 |
| Diethyl carbonate [42] | NA | NA | NA | ND | 9.70 | ND | 7.40 |
| Propyl 2-methylbutanoate [7,42] | 126.70 | 4770.00 | 113.00 | 109.30 | 208.50 | 192.0 | 11.80 |
| Propyl butanoate [7,42] | 950.00 | 630.00 | 950.00 | 3.50 | 16.30 | ND | ND |
| Propyl 3-methylbutanoate [7,42] | 19.00 | ND | 380.00 | 237.90 | ND | ND | ND |
| Ethyl 2-butenoate [7,42] | ND | 140.00 | ND | ND | 252.20 | 397.60 | 132.10 |
| Methyl hexanoate [7] | 320.00 | 1700.00 | ND | ND | ND | ND | ND |
| Ethyl (2E)-2-pentenoate [42] | NA | NA | NA | 4.50 | ND | ND | ND |
| Ethyl 3-hexanoate [42] | NA | NA | NA | ND | ND | 93.02 | 32.30 |
| Propyl hexanoate [7,42] | 580.00 | 500.00 | 310.00 | 3.10 | 24.20 | 3.90 | ND |
| Propyl tiglate [42] | NA | NA | NA | 12.80 | ND | ND | ND |
| Ethyl heptanoate [7,42] | 150.00 | 250.00 | 150.00 | 42.40 | 111.20 | 74.80 | ND |
| Methyl octanoate [7,42] | 220.00 | 100.00 | ND | 4.30 | 26.90 | ND | ND |
| Ethyl octanoate [7,42] | 550.00 | 550.00 | 260.00 | 91.0 | 174.60 | 108.40 | 45.90 |
| Ethyl (4Z)-4-octenoate [42] | NA | NA | NA | ND | 17.40 | ND | ND |
| Ethyl-2,4-hexadienoate [42] | NA | NA | NA | ND | ND | 3.10 | 2.60 |
| Ethyl-3-hydroxybutanoate [42] | NA | NA | NA | 6.10 | 12.20 | 23.40 | 16.80 |
| Propyl octanoate [42] | NA | NA | NA | ND | 14.50 | ND | ND |
| Ethyl-2-octenoate [42] | NA | NA | NA | 2.20 | ND | ND | ND |
| Ethyl decanoate [42] | NA | NA | NA | 10.90 | 8.20 | 10.40 | 11.1 |
| Ethyl 2-methylpropanoate [7] | 460.00 | 510.00 | 520.00 | NA | NA | NA | NA |
| Propyl acetate [7] | 190.00 | 90.00 | 560.00 | NA | NA | NA | NA |
| Methyl butanoate [7] | 300.00 | 450.00 | ND | NA | NA | NA | NA |
| Ethyl 3-methylbutanoate [7] | 190.00 | 220.00 | 220.00 | NA | NA | NA | NA |
| 3-methylbutyl propanoate [7] | 730.00 | ND | 600.00 | NA | NA | NA | NA |
| Total | 19155.70 | 20050.00 | 14863.00 | 3947.60 | 4399.30 | 5868.12 | 1429.10 |
NA, not available; ND, not detected.