Table 3 Free phenolic profiles of litchi pulp
Phenolic | Free phenolic compounds | ||||
|---|---|---|---|---|---|
80% methanol | 80% ethanol | 80% acetone | 80% ethyl acetate | Water | |
3,4-dihydroxybenzoic acid | ND1 | ND | 115.26 ± 11.172 | ND | ND |
(+)-catechin | 140.34 ± 12.01ab3 | 131.66 ± 2.74bc | 163.34 ± 21.13a | 83.34 ± 5.27d | 107.78 ± 25.53 cd |
Vanillic acid | 130.77 ± 19.50b | ND | 126.48 ± 7.27b | 72.99 ± 4.90c | 254.25 ± 32.88a |
Caffeic acid | 393.37 ± 21.08b | 188.95 ± 16.28d | 442.93 ± 17.78a | 244.68 ± 11.43c | 38.66 ± 4.57e |
Syringic acid | ND | 30.55 ± 1.48 | 39.50 ± 6.17 | ND | ND |
(-)-epicatechin | 1489.88 ± 159.63b | 1118.81 ± 20.54c | 2308.19 ± 106.54a | 929.13 ± 18.89d | 266.28 ± 13.99e |
4-methylcatechol | 5926.88 ± 475.53a | 4938.91 ± 483.11b | 6337.70 ± 209.91a | 3493.87 ± 236.51c | 3304.28 ± 148.94c |
Ferulic acid | 442.64 ± 19.31a | 276.60 ± 21.05b | 488.34 ± 68.82a | 286.17 ± 86.28b | 215.51 ± 13.89b |
Rutin | 3441.47 ± 212.65ab | 3125.16 ± 94.31b | 3580.33 ± 274.25a | 2016.82 ± 108.41c | 1614.32 ± 120.93d |