Table 5.
Volatile compounds of ripe ‘Albion’ strawberry fruit treated with Ethephon, Harvista (1-MCP) or water at four development stages (Green, White, Pink and Red) plus an absolute control (No Dip) ranked by relative abundance.
| Compound* | Mean Normalized Area counts | SEM** | % Abundance | Significance (F prob) | |||
|---|---|---|---|---|---|---|---|
| No dip | Ripeness Stage | Dip Treatment | Ripeness x Dip | ||||
| d.f. | 1 | 3 | 2 | 6 | |||
| Grand Total | 2938 | 256.8 | 100.000 | ns | <0.001 | 0.009 | <0.001 |
| (E)-hex-2-enal | 612.20 | 86.59 | 20.84 | ns | 0.047 | . | ns |
| methyl butanoate | 442.90 | 42.12 | 15.08 | ns | 0.011 | . | 0.023 |
| hexanal | 279.20 | 36.34 | 9.50 | ns | ns | . | ns |
| 3,7-dimethylocta-1,6-dien-3-ol | 170.80 | 28.35 | 5.81 | ns | <0.001 | . | ns |
| ethyl butanoate | 147.50 | 47.14 | 5.02 | 0.031 | <0.001 | <0.001 | <0.001 |
| 3,7,11-trimethyldodeca-1,6,10-trien-3-ol | 125.20 | 22.80 | 4.26 | ns | ns | 0.053 | 0.019 |
| (E)-hex-3-enal | 90.89 | 23.76 | 3.09 | ns | ns | . | ns |
| methyl hexanoate | 79.36 | 13.54 | 2.70 | ns | <0.001 | . | 0.007 |
| methyl acetate | 75.34 | 7.51 | 2.56 | ns | 0.054 | . | 0.056 |
| ethyl acetate | 69.59 | 29.58 | 2.37 | 0.029 | <0.001 | <0.001 | <0.001 |
| [(Z)-hex-2-enyl] acetate | 67.55 | 12.12 | 2.30 | ns | <0.001 | 0.046 | ns |
| propan-2-one | 64.26 | 8.55 | 2.19 | ns | ns | . | ns |
| (2E,4E)-hexa-2,4-dienal | 45.69 | 6.93 | 1.56 | ns | ns | . | ns |
| (E)-hex-2-enal | 35.11 | 70.06 | 1.20 | ns | ns | . | ns |
| 5-hexyloxolan-2-one | 33.51 | 11.13 | 1.14 | ns | <0.001 | . | ns |
| butyl acetate | 32.00 | 10.24 | 1.09 | ns | <0.001 | <0.001 | <0.001 |
| propan-2-yl butanoate | 28.92 | 28.80 | 0.98 | ns | ns | . | ns |
| 2-(4-methylcyclohex-3-en-1-yl)propan-2-ol | 26.76 | 8.27 | 0.91 | ns | 0.031 | . | ns |
| hexyl acetate | 19.91 | 4.16 | 0.68 | ns | <0.001 | 0.04 | ns |
| heptan-2-one | 18.65 | 5.05 | 0.64 | ns | <0.001 | . | 0.043 |
| pentan-2-one | 18.56 | 9.57 | 0.63 | 0.001 | ns | . | ns |
| 4-methylpentan-2-one | 15.82 | 3.41 | 0.54 | ns | ns | . | ns |
| butyl butanoate | 15.46 | 12.38 | 0.53 | ns | <0.001 | 0.058 | 0.052 |
| nonanal | 11.88 | 3.55 | 0.40 | ns | ns | 0.034 | ns |
| 3-methylbutanal | 11.07 | 16.26 | 0.38 | ns | ns | 0.095 | ns |
| ethyl hexanoate | 10.34 | 4.28 | 0.35 | ns | <0.001 | 0.004 | <0.001 |
| 2-methyl-6-methylideneocta-1,7-diene | 9.71 | 2.15 | 0.33 | ns | <0.001 | . | ns |
| methyl 3-methylbutanoate | 9.59 | 2.83 | 0.33 | ns | ns | . | ns |
| 2-[(2S,5S)-5-ethenyl-5-methyloxolan-2-yl]propan-2-ol | 9.26 | 1.34 | 0.32 | ns | 0.053 | . | 0.033 |
| 2-ethylhexan-1-ol | 8.93 | 5.85 | 0.30 | ns | ns | 0.065 | ns |
| 6,6-dimethyl-2-methylidenebicyclo[3.1.1]heptane | 8.86 | 6.96 | 0.30 | ns | 0.043 | . | ns |
| 3-methylbutyl acetate | 8.77 | 1.95 | 0.30 | ns | <0.001 | 0.001 | <0.001 |
| 3,7,11-trimethyldodeca-1,6,10-trien-3-ol | 8.71 | 15.86 | 0.30 | ns | ns | . | ns |
| 1-methyl-4-propan-2-ylidenecyclohexene | 8.39 | 3.16 | 0.29 | ns | 0.017 | . | ns |
| (3E,6E)-3,7,11-trimethyldodeca-1,3,6,10-tetraene | 8.20 | 1.02 | 0.28 | ns | <0.001 | . | 0.095 |
| propan-2-yl acetate | 7.80 | 1.40 | 0.27 | ns | <0.001 | . | 0.001 |
| octanal | 6.53 | 1.58 | 0.22 | 0.037 | ns | 0.074 | ns |
| 1-methyl-4-prop-1-en-2-ylcyclohexene | 6.19 | 2.76 | 0.21 | ns | ns | . | ns |
| 5-octyloxolan-2-one | 6.03 | 1.72 | 0.21 | ns | <0.001 | . | ns |
| hexanoic acid | 5.95 | 1.08 | 0.20 | ns | <0.001 | . | ns |
| 1,2,4-trimethyl-3-nitrobicyclo[3.3.1]nonan-9-one | 5.95 | 2.78 | 0.20 | ns | 0.021 | . | ns |
| (E)-hex-3-enal | 5.75 | 12.54 | 0.20 | ns | ns | . | ns |
| 2-ethylfuran | 5.58 | 2.06 | 0.19 | ns | ns | 0.098 | ns |
| hexane | 5.47 | 12.62 | 0.19 | 0.065 | ns | . | ns |
| pent-1-en-3-one | 5.40 | 0.82 | 0.18 | 0.07 | ns | . | ns |
| heptanal | 5.18 | 4.25 | 0.18 | ns | ns | . | ns |
| 6-methylhept-5-en-2-one | 5.11 | 0.49 | 0.17 | 0.054 | <0.001 | . | ns |
| (E)-hept-2-enal | 5.05 | 2.25 | 0.17 | ns | 0.074 | . | ns |
| decanal | 4.47 | 1.74 | 0.15 | ns | ns | . | 0.029 |
| 2-[(2S,5S)-5-ethenyl-5-methyloxolan-2-yl]propan-2-ol | 4.37 | 0.99 | 0.15 | ns | ns | . | ns |
| ethyl 3-methylbutanoate | 4.37 | 5.01 | 0.15 | ns | <0.001 | . | ns |
| pentanal | 3.81 | 6.19 | 0.13 | ns | ns | . | ns |
| (E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one | 3.75 | 0.91 | 0.13 | ns | ns | . | ns |
| (3Z)-3,7-dimethylocta-1,3,7-triene | 3.65 | 1.19 | 0.12 | ns | 0.017 | . | ns |
| (E)-pent-2-enal | 3.37 | 0.99 | 0.12 | ns | ns | 0.079 | ns |
| oct-1-en-3-one | 3.26 | 1.08 | 0.11 | ns | ns | 0.076 | ns |
| [(Z)-hex-3-enyl] acetate | 3.17 | 1.22 | 0.11 | ns | 0.049 | . | ns |
| 3,7,11-trimethyldodeca-1,6,10-trien-3-ol | 3.04 | 10.96 | 0.10 | ns | ns | . | ns |
| (3S,6S)-2,2,6-trimethyl-6-[(1S)-4-methylcyclohex-3-en-1-yl]oxan-3-ol | 2.94 | 1.62 | 0.10 | ns | ns | . | ns |
| 1-methyl-4-prop-1-en-2-ylcyclohexene | 2.93 | 2.68 | 0.10 | ns | ns | 0.048 | ns |
| 2-ethenyl-2,6,6-trimethyloxane | 2.92 | 1.14 | 0.10 | ns | 0.067 | . | ns |
| (Z)-β-Ocimene(3Z)-3,7-dimethylocta-1,3,6-triene | 2.87 | 1.45 | 0.10 | ns | ns | . | ns |
| (E)-oct-2-enal | 2.78 | 0.67 | 0.10 | ns | ns | 0.052 | ns |
| benzaldehyde | 2.77 | 1.84 | 0.09 | ns | ns | . | ns |
| Unknown 1 | 2.73 | 1.02 | 0.09 | 0.081 | ns | . | ns |
| butan-2-one | 2.65 | 0.69 | 0.09 | ns | <0.001 | . | 0.011 |
| (Z)-hept-2-enal | 2.58 | 1.98 | 0.09 | ns | ns | . | ns |
| benzyl acetate | 2.45 | 0.43 | 0.08 | ns | <0.001 | <0.001 | 0.001 |
| (3E,6E)-3,7,11-trimethyldodeca-1,3,6,10-tetraene | 2.34 | 0.37 | 0.08 | ns | <0.001 | 0.099 | ns |
| 4-methoxy-2,5-dimethylfuran-3-one | 2.16 | 0.86 | 0.07 | ns | 0.006 | 0.098 | ns |
| 1-methoxy-2-methylpropan-2-ol | 2.12 | 0.60 | 0.07 | ns | ns | . | ns |
| 2-(4-methylcyclohex-3-en-1-yl)propanal | 1.97 | 0.28 | 0.07 | ns | 0.058 | . | ns |
| (2E)-3,7-dimethylocta-2,6-dien-1-ol | 1.94 | 0.86 | 0.07 | 0.094 | 0.051 | . | 0.095 |
| hexan-1-ol | 1.93 | 0.40 | 0.07 | ns | ns | . | ns |
| 5-methylhexa-1,2-diene | 1.84 | 3.63 | 0.06 | 0.042 | ns | . | ns |
| (2E)-3,7-dimethylocta-2,6-dien-1-ol | 1.75 | 1.22 | 0.06 | ns | ns | . | ns |
| (3Z,6E)-3,7,11-trimethyldodeca-1,3,6,10-tetraene | 1.74 | 0.25 | 0.06 | ns | <0.001 | . | ns |
| (2R)-2-ethenyl-2,6,6-trimethyloxane | 1.70 | 0.50 | 0.06 | ns | ns | . | ns |
| octyl butanoate | 1.59 | 0.75 | 0.05 | ns | 0.003 | . | ns |
| 1-methyl-4-[(2E)-6-methylhepta-2,5-dien-2-yl]cyclohexene | 1.56 | 0.27 | 0.05 | ns | <0.001 | . | ns |
| octan-1-ol | 1.55 | 0.40 | 0.05 | ns | ns | . | ns |
| 2,4-dimethylhept-1-ene | 1.49 | 0.71 | 0.05 | ns | 0.01 | . | ns |
Only compounds with a relative abundance >0.05% are listed.
*Tentative identification based on MS library match and RI literature match.
**Standard error of the mean (SEM).
ns, No significant difference (P > 0.10).