Table 3.
Compound | Fraction | Acetone | Ethanol | Methanol | Water | ||||
---|---|---|---|---|---|---|---|---|---|
Conventional | Ultrasound | Conventional | Ultrasound | Conventional | Ultrasound | Conventional | Ultrasound | ||
Hydroxybenzoic acid derivatives phenolic acid (μg/g) | |||||||||
Gallic acid | Hull | 41.46 ± 1.13d | 61.68 ± 0.98m | 50.70 ± 0.96gh | 53.69 ± 0.71ijk | 54.25 ± 0.65jk | 57.11 ± 0.85l | 37.76 ± 0.98c | 47.78 ± 0.61f |
Cotyledon | 29.68 ± 0.68a | 34.87 ± 0.85b | 42.29 ± 1.01de | 47.61 ± 0.93f | 40.76 ± 1.07d | 52.52 ± 0.53hij | 32.14 ± 0.65a | 44.80 ± 0.66e | |
Whole | 48.84 ± 0.91fg | 55.34 ± 0.50kl | 63.62 ± 1.03m | 77.64 ± 0.97n | 51.71 ± 0.76hij | 84.29 ± 0.76o | 51.12 ± 0.78ghi | 76.41 ± 0.83n | |
Protocatechuic acid | Hull | 1263.98 ± 1.46u | 1973.36 ± 1.73v | 1233.40 ± 1.71t | 1086.58 ± 0.98r | 1204.38 ± 2.07s | 938.63 ± 1.18n | 655.60 ± 1.47d | 699.65 ± 1.10e |
Cotyledon | 2287.71 ± 1.91w | 823.42 ± 1.00l | 772.67 ± 1.26i | 757.49 ± 0.95g | 411.22 ± 1.64a | 805.94 ± 1.07j | 818.26 ± 1.00k | 1055.62 ± 1.42q | |
Whole | 550.76 ± 1.08b | 3414.40 ± 2.80x | 766.21 ± 0.77h | 951.54 ± 1.14o | 969.56 ± 1.58p | 922.91 ± 1.00m | 607.45 ± 1.05c | 749.73 ± 1.04f | |
Vanillic acid | Hull | 5.12 ± 0.32d | 31.94 ± 0.40j | 16.19 ± 0.47h | 0.84 ± 0.01a | 9.48 ± 0.36f | Trace | Trace | Trace |
Cotyledon | ND | ND | ND | ND | ND | ND | ND | ND | |
Whole | 14.66 ± 0.36g | 9.70 ± 0.36f | 40.30 ± 0.25k | 13.94 ± 0.21g | 25.48 ± 0.42i | 4.28 ± 0.21c | 8.13 ± 0.47e | 3.41 ± 0.32b | |
Chlorogenic acid | Hull | 79.36 ± 1.23e | 142.43 ± 1.02n | 112.48 ± 0.85j | 111.95 ± 0.90j | 117.44 ± 0.50k | 64.51 ± 0.76c | 84.71 ± 0.95f | 113.27 ± 0.76j |
Cotyledon | 57.39 ± 1.06a | 57.96 ± 0.76a | 72.67 ± 1.02d | 73.24 ± 0.81d | 74.32 ± 0.67d | 77.62 ± 0.81e | 61.04 ± 0.98b | 71.86 ± 0.03d | |
Whole | 97.04 ± 0.95h | 136.48 ± 0.84m | 116.15 ± 0.74k | 130.21 ± 0.77l | 106.15 ± 0.52i | 118.75 ± 1.05k | 77.95 ± 0.65e | 91.62 ± 1.00g | |
Hydroxycinnamic acid derivatives phenolic acid (μg/g) | |||||||||
Caffeic acid | Hull | 25.74 ± 0.02o | 66.24 ± 0.08s | 23.58 ± 0.02kl | 23.54 ± 0.02k | 23.27 ± 0.02j | 23.64 ± 0.04l | 20.74 ± 0.03b | 28.47 ± 0.01p |
Cotyledon | 21.49 ± 0.06d | 31.04 ± 0.02r | 21.71 ± 0.01e | 22.75 ± 0.01h | 25.07 ± 0.03n | 22.23 ± 0.01f | 30.68 ± 0.01q | 20.44 ± 0.01a | |
Whole | 24.56 ± 0.04m | 22.90 ± 0.02i | 21.19 ± 0.02c | 21.72 ± 0.03e | 22.40 ± 0.00g | 22.24 ± 0.02f | 20.75 ± 0.05b | 22.28 ± 0.01f | |
p-Coumaric acid | Hull | 309.81 ± 0.19i | 326.91 ± 0.25m | 316.59 ± 0.42l | 316.55 ± 0.30l | 311.73 ± 0.32g | 314.35 ± 0.31k | 299.25 ± 0.21e | 326.41 ± 0.25m |
Cotyledon | 293.36 ± 0.25b | 293.86 ± 0.31b | 293.32 ± 0.25b | 291.80 ± 0.21a | 293.96 ± 0.42b | 291.81 ± 0.15a | 292.08 ± 0.50a | 291.74 ± 0.20a | |
Whole | 296.31 ± 0.30cd | 303.88 ± 0.40h | 300.29 ± 0.25f | 303.75 ± 0.23h | 297.18 ± 0.17d | 301.21 ± 0.21g | 295.46 ± 0.25c | 298.51 ± 0.25e | |
Ferulic acid | Hull | 770.57 ± 2.47k | 1634.54 ± 1.81s | 1053.49 ± 5.05q | 1015.16 ± 9.39p | 909.25 ± 0.91m | 951.54 ± 1.21n | 370.93 ± 0.44f | 1308.55 ± 0.82r |
Cotyledon | 37.22 ± 0.32a | 81.60 ± 0.28d | 37.56 ± 0.10a | 48.19 ± 0.34bc | 38.44 ± 0.43ab | 53.40 ± 0.18c | 34.42 ± 0.10a | 42.33 ± 0.12ab | |
Whole | 406.49 ± 1.87g | 1052.07 ± 9.58q | 705.23 ± 3.91j | 976.17 ± 4.73o | 511.78 ± 0.55h | 797.44 ± 1.98l | 272.51 ± 1.06e | 657.04 ± 0.52i | |
Sinapic acid | Hull | 2107.25 ± 2.85j | 3258.62 ± 27.66q | 2528.67 ± 0.38o | 2414.53 ± 0.29n | 2260.55 ± 1.51l | 2260.84 ± 0.25l | 1460.98 ± 0.42d | 2828.65 ± 0.57p |
Cotyledon | 1034.33 ± 0.21a | 1058.25 ± 0.27b | 1034.85 ± 0.09a | 1043.25 ± 0.08ab | 1036.68 ± 0.15a | 1046.83 ± 0.06ab | 1040.10 ± 0.12a | 1040.28 ± 0.26ab | |
Whole | 1518.72 ± 1.38e | 2304.84 ± 0.20m | 1907.70 ± 0.51h | 2220.77 ± 0.23k | 1631.22 ± 0.94f | 1978.78 ± 0.25i | 1330.72 ± 0.19c | 1744.88 ± 3.25g | |
Flavonoids and stilbene (μg/g) | |||||||||
Catechin | Hull | 6.38 ± 0.42b | 33.98 ± 0.50e | Trace | Trace | 2.69 ± 0.24a | 13.43 ± 0.40d | Trace | 49.94 ± 0.76g |
Cotyledon | ND | ND | ND | ND | ND | ND | ND | ND | |
Whole | Trace | Trace | Trace | Trace | Trace | Trace | Trace | 37.97 ± 0.35f | |
Quercetin | Hull | 13.26 ± 0.23i | 37.02 ± 0.72k | 18.33 ± 0.40j | 11.26 ± 0.25g | 8.55 ± 0.47e | 6.27 ± 0.29c | Trace | 7.05 ± 0.07cd |
Cotyledon | 1.54 ± 0.31a | 7.17 ± 0.15d | 1.10 ± 0.10a | 7.39 ± 0.31d | 1.45 ± 0.21a | 6.25 ± 0.19c | Trace | 1.85 ± 0.31a | |
Whole | Trace | 13.75 ± 0.25i | 1.31 ± 0.21a | 12.35 ± 0.25h | Trace | 9.66 ± 0.38f | Trace | 5.09 ± 0.14b | |
Luteolin | Hull | 1279.03 ± 0.20de | 1284.15 ± 0.23g | 1279.78 ± 0.21e | 1280.60 ± 0.15f | 1278.41 ± 0.31d | 1280.76 ± 0.23f | 1275.94 ± 0.25abc | 1290.77 ± 0.21h |
Cotyledon | 1275.69 ± 0.38a | 1276.29 ± 0.22abc | 1275.77 ± 0.24ab | 1275.86 ± 0.15ab | 1275.65 ± 0.38a | 1276.00 ± 0.40abc | 1275.83 ± 0.20ab | 1276.21 ± 0.15abc | |
Whole | 1276.57 ± 0.25bc | 1279.79 ± 0.31e | 1276.73 ± 0.15c | 1279.31 ± 0.22e | 1276.56 ± 0.26bc | 1279.56 ± 0.31e | 1276.27 ± 0.20abc | 1276.53 ± 0.25bc | |
Resveratrol | Hull | 17.45 ± 0.20g | 30.58 ± 0.61k | 23.31 ± 0.52j | 21.80 ± 0.56i | 20.23 ± 0.46h | 18.55 ± 0.45g | 9.03 ± 0.19e | 12.17 ± 0.45f |
Cotyledon | 7.20 ± 0.33ab | 7.77 ± 0.26abcd | 7.04 ± 0.44a | 6.92 ± 0.47a | 7.10 ± 0.28a | 7.43 ± 0.34ab | 7.18 ± 0.17ab | 7.14 ± 0.23ab | |
Whole | 7.46 ± 0.37abc | 11.55 ± 0.40f | 8.65 ± 0.36cde | 8.80 ± 0.66de | 7.15 ± 0.13ab | 8.34 ± 0.27bcde | 7.23 ± 0.20ab | 6.81 ± 0.18a | |
Trans Stilbene | Hull | 59.54 ± 0.20def | 59.87 ± 0.19f | 59.94 ± 0.32f | 57.71 ± 0.17ab | 59.76 ± 0.07ef | 57.65 ± 0.32ab | 212.31 ± 0.65l | 58.36 ± 0.24abcd |
Cotyledon | 59.58 ± 0.35def | 73.27 ± 0.25h | 59.56 ± 0.31def | 57.76 ± 0.15ab | 61.77 ± 0.15g | 57.95 ± 0.26abc | 59.10 ± 0.21cdef | 58.52 ± 0.13bcd | |
Whole | 160.82 ± 0.81j | 58.60 ± 0.21bcde | 163.65 ± 0.72k | 58.19 ± 0.15abc | 59.52 ± 0.36def | 58.21 ± 0.22abc | 155.34 ± 1.00i | 57.20 ± 0.15a |
Values expressed as mean (n = 3) ± standard deviation; Different letters in the same compound sub-rows and columns represent statistically different results according to the Fisher HSD test (p < 0.05)
ND not detected