Table 3.
Volatile compounds. Volatile compound concentrations (ng/mL) in fermented and unfermented cherry juice.
48 Hours | ||||||||
Compound | 37 °C | 2360 | 4186 | 30 °C | 1LE1 | 285 | C1 | POM1 |
acetoin | 0.001 ± 0.000 | 260.679 ± 34.426 * | 5.909 ± 0.480 | 0.002 ± 0.000 | 71.373 ± 4.486 * | 76.300 ± 18.884 * | 287.902 ± 14.971* | 44.022 ± 1.515 * |
benzene methanol | 51.130 ± 13.431 | 164.411 ± 4.744 * | 70.560 ± 13.868 | 64.548 ± 0.700 | 70.513 ± 1.502 | 158.829 ± 3.660 * | 95.692 ± 15.202 | 90.078 ± 11.908 * |
β-linalool | 13.742 ± 3.515 | 39.630 ± 2.624 * | 21.464 ± 2.627 * | 15.670 ± 0.326 | 15.305 ± 0.181 | 28.975 ± 0.424 * | 19.964 ± 2.326 * | 19.593 ± 1.604 * |
acetic acid | 0.087 ± 0.030 | 0.017 ± 0.017 * | 0.014 ± 0.002 * | 0.013 ± 0.011 | 54.831 ± 18.642 * | 125.405 ± 10.324 * | 184.836 ± 21.933 * | 69.201 ± 9.371 * |
propyl acetate | 0.009 ± 0.005 | 1186.731 ± 460.827 * | 201.607 ± 26.688 | 0.008 ± 0.005 | 24.680 ± 0.422 * | 27.876 ± 5.804 * | 83.370 ± 6.871 * | 18.539 ± 0.273 * |
4-ethylphenol | 0.341 ± 0.016 | 29.025 ± 12.443 * | 1.828 ± 0.232 | 0.503 ± 0.144 | 23.832 ± 4.294 * | 150.460 ± 3.007 * | 8.997 ± 3.734 * | 106.967 ± 6.068 * |
14 Days | ||||||||
Compound | 37 °C | 2360 | 4186 | 30 °C | 1LE1 | 285 | C1 | POM1 |
acetoin | 0.004 ± 0.005 | 180.078 ± 22.938 * | 65.013 ± 1.293 * | 0.004 ± 0.000 | 580.569 ± 61.646 * | 161.905 ± 50.669 | 1058.883 ± 222.855 * | 63.563 ± 22.691 |
benzene methanol | 146.075 ± 6.008 | 79.259 ± 21.526 * | 250.467 ± 32.932 * | 99.225 ± 1.022 | 462.867 ± 76.120 * | 311.721 ± 47.740 * | 327.123 ± 54.469 * | 116.204 ± 42.234 |
β-linalool | 41.464 ± 3.599 | 19.467 ± 2.875 * | 70.918 ± 15.120 * | 27.205 ± 2.210 | 92.675 ± 20.477 * | 57.517 ± 9.385 * | 68.307 ± 4.195 * | 22.431 ± 8.860 |
acetic acid | 0.024 ± 0.009 | 228.633 ± 71.471 * | 0.354 ± 0.192 | 0.013 ± 0.009 | 535.465 ± 92.920 * | 305.391 ± 5.248 * | 737.615 ± 193.995 * | 257.568 ± 75.381 * |
propyl acetate | 0.026 ± 0.004 | 509.194 ± 12.345 * | 1230.067 ± 222.171 * | 0.015 ± 0.014 | 160.882 ± 2.895 * | 61.035 ± 14.937 * | 281.546 ± 28.411 * | 16.706 ± 5.548 |
4-ethylphenol | 0.848 ± 0.141 | 3.210 ± 0.751 | 21.854 ± 5.943 * | 0.608 ± 0.144 | 129.556 ± 2.648 * | 281.248 ± 21.113 * | 12.287 ± 0.017 * | 136.453 ± 43.612 * |
* significant differences between the concentrations of each compound observed in fermented cherry juices and in the respective control; 37 °C for L. rhamnosus 2360 and L. paracasei 4186, 30 °C for L. plantarum 1LE1, 285, C1 and POM1.