Table 4 Compounds identified by GC–MS in the cyclohexane and ethyl acetate fractions of distilled straws
Compound nature | Compounds | MS fragmentsa m/z (relative intensity, %) | Substratesb | |
|---|---|---|---|---|
Cyclohexane fraction | Monoterpenes | β-Myrcene | M+c 136 (2), 41 (100), 93 (74), 69 (68), 39 (28), 27 (19), 91 (17) | DS, DF |
Monoterpenols | Borneol | M+ 154 (tr), 95 (100), 41 (32), 27 (21), 39 (20), 110 (20), 43 (18) | DS, DF | |
Linalool | M+ 154 (tr), 41 (100), 71 (64), 43 (60), 55 (45), 93 (39), 69 (36) | DS, DF, LF | ||
cis-Geraniol (nerol) | M+ 154 (2), 41 (100), 69 (66), 39 (30), 93 (26), 53 (12), 68 (12) | DS, DF | ||
α-Terpineol | M+ 154 (tr), 59 (100), 43 (74), 93 (72), 121 (52), 68 (44), 136 (42) | DS, DF, LF | ||
Terpenic esters | Dihydrocarvyl acetate | M+ 196 (tr), 43 (100), 41 (59), 39 (39), 93 (31), 67 (28), 53 (25) | DS, DF, LF | |
Geranyl acetate | M+ 196 (tr), 69 (100), 43 (67), 41 (65), 68 (38), 93 (22), 136 (17) | DS, DT, LF | ||
Geranyl propionate | M+ 210 (tr), 41 (100), 69 (99), 57 (76), 29 (70), 68 (54), 93 (42) | DS, DF | ||
Linalyl acetate | M+ 196 (tr), 43 (100), 93 (82), 41 (58), 80 (33), 69 (24), 55 (23) | DS, DF, LF | ||
Neryl acetate | M+ 196 (tr), 69 (100), 41 (70), 43 (58), 68 (40), 93 (36), 80 (18) | DS, DF, LF | ||
Sesquiterpenes | β-Caryophyllene | M+ 204 (tr), 41 (100), 79 (41), 91 (40), 39 (34), 53 (30), 77 (28) | DS, DF, LS, LF | |
β-Farnesene | M+ 204 (2), 41 (100), 69 (74), 93 (37), 39 (26), 67 (22), 79 (19) | DS, DF, LS | ||
Germacrene d | M+ 204 (14), 161 (100), 91 (91), 41 (86), 105 (80), 79 (52), 81 (52) | DS, DF | ||
Sesquiterpenoids | α-Bisabolol | M+ 222 (tr), 43 (100), 41 (70), 69 (50), 119 (50), 109 (42), 67 (28) | DS, DF | |
τ-Cadinol | M+ 222 (tr), 161 (100), 43 (99), 119 (56), 41 (51), 105 (47), 204 (34) | DS, DF, LS, LF | ||
Ketones | Camphor | M+ 152 (19), 95 (100), 41 (89), 81 (70), 39 (50), 55 (50), 69 (40) | DS, DF | |
Lactones | Coumarin | M+ 146 (91), 118 (100), 90 (47), 89 (39), 63 (38), 39 (18), 62 (16) | DS, DF, LS, LF | |
Herniarin (7-methoxycoumarin) | M+ 176 (85), 133 (100), 148 (69), 77 (22), 51 (22), 63 (18), 105 (17) | DS, DF, LS, LF | ||
Ethyl acetate fraction | Phenolic acids and derivatives | Caffeic acid isomers | M+ 398 (20), 219 (100), 73 (94), 396 (92), 397 (38), 191 (22), 381 (21) | DS, DF, LS, LF |
Catechol lactate | M+ 486 (5), 267 (100), 73 (97), 179 (28), 268 (27), 147 (24), 396 (17) | DS, DF, LS, LF | ||
o/m-Coumaric acid | M+ 308 (24), 73 (100), 147 (67), 293 (31), 131 (31), 161 (27), 75 (24) | DS, DF, LS, LF | ||
p-Coumaric acid | M+ 308 (22), 73 (100), 75 (39), 219 (32), 293 (30), 249 (17), 147 (10) | DS, DF, LS, LF | ||
2-Hydroxybenzoic acid | M+ 282 (tr), 73 (85), 135 (35), 268 (26), 91 (14), 269 (12), 179 (8) | DS, DF, LS, LF | ||
3-(2-Hydroxyphenyl)propionic acid | M+ 310 (45), 73 (100), 147 (83), 192 (73), 295 (62), 177 (47), 253 (39) | DS, DF, LS, LF | ||
3-(4-Hydroxyphenyl)lactic acid | M+ 398 (tr), 73 (100), 179 (95), 147 (31), 308 (29), 180 (16), 75 (13) | DS, DF, LS, LF | ||
trans/cis Ferulic acid | M+ 338 (67), 73 (100), 204 (43), 75 (42), 323 (33), 308 (30), 249 (27) | DS, DF, LS, LF | ||
Protocatechuic acid | M+ 370 (46), 73 (100), 193 (89), 355 (23), 223 (18), 311 (17), 371 (15) | DS, DF, LS, LF | ||
Vanillic acid | M+ 312 (61), 297 (100), 73 (81), 267 (73), 223 (59), 253 (42), 75 (29) | DS, DF, LS, LF |