Table 3.
Metabolites identified in chloroform extracts of cauliflower and globe artichoke byproducts. Relative assignments of 1H and 13C NMR signals are reported. L = leaves; S = stalks; F = florets; d = doublet; dd = doublet of doublets; s = singlet; t = triplet.
| Metabolite | Assignment | δ 1H (ppm) | Multiplicity | δ 13C (ppm) | Globe Artichoke | Cauliflower |
|---|---|---|---|---|---|---|
| Pheophytin a | CH-10 | 9.54 | s | 105.0 | L | L |
| CH-5 | 9.39 * | s | 97.8 | |||
| CH-20 | 8.59 | s | 93.7 | |||
| CH-31 | 8.01 | dd (17.7; 11.5) | 129.3 | |||
| CH2-32 | 6.32; 6.22 | dd (17.7; 1.1) dd (11.5; 1.2) | 123.5 | |||
| CH-P2 | 4.89 | 118.0 | ||||
| CH-18 | 4.48 | 50.5 | ||||
| CH-17 | 4.12 | 52.0 | ||||
| CH3-134 | 3.91 | s | 53.1 | |||
| CH2-81 | 3.70 | 19.7 | ||||
| CH3-181 | 1.82 | d (7.6) | 23.4 | |||
| CH3-82 | 1.71 | t (7.9) | 17.6 | |||
| Pheophytin b | CH-71 | 11.19 | s | L | L | |
| CH-5 | 9.98 * | s | ||||
| CH-10 | 9.65 | s | ||||
| CH-31 | 7.93 | dd (17.8; 11.5) | ||||
| CH2-32 | 6.24; 6.02 | |||||
| Squalene | CH3 -a | 1.69 | 25.3 | L, S | L, F | |
| CH3 -b | 1.61 | 16.2 | ||||
| CH -c | 5.12 * | 124.6 | ||||
| CH2-d | 1.99 | 40.2 | ||||
| CH2-e | 2.07 | 26.8 | ||||
| Linolenic acid chains | CH2-2 | 2.32 | 34.6 | L, S | L, S, F | |
| CH2-3 | 1.63 | 25.3 | ||||
| CH2-4-7 | 1.32 | |||||
| CH2-8 | 2.06 | 27.5 | ||||
| CH-9 | 5.38 | 130.3 | ||||
| CH2-11,14 | 2.81 * | t (6.1) | 25.9 | |||
| CH-10, 12,13 | 5.36 | 128.5 | ||||
| CH-15 | 5.31 | 127.4 | ||||
| CH-16 | 5.39 | 132.2 | ||||
| CH2-17 | 2.09 | 20.9 | ||||
| CH3-18 | 0.98 | t (7.6) | 14.5 | |||
| Linoleic acid chains | CH2-2 | 2.32 | 34.6 | L, S | L, S, F | |
| CH2-3 | 1.63 | 25.3 | ||||
| CH2-4–7 | 1.32 | |||||
| CH2-8,14 | 2.06 | 27.5 | ||||
| CH-9,13 | 5.37 | 130.5 | ||||
| CH-10,12 | 5.35 | 128.4 | ||||
| CH2-11 | 2.78 * | t (6.7) | 25.8 | |||
| CH3-18 | 0.90 | t (7.6) | 14.3 | |||
| Phosphatidylcholine | (CH3)3N | 3.23 | 54.5 | L, S | L, F, S | |
| CH2OP | 4.44 | 61.9 | ||||
| CH2 sn1 | 4.39; 4.17 | 63.1 | ||||
| CH sn2 | 5.26 | 70.8 | ||||
| CH2 sn3 | 4.14 | 65.4 | ||||
| Phosphatidylethanolamine | CH2NH2 | 3.16 | 40.8 | S, F | ||
| CH2OP | 4.10 | 62.1 | ||||
| Digalactosyldiacylglycerol | CH-1′ | 4.23 | 104.3 | L, S | L, F, S | |
| CH-2′ | 3.53 | 71.7 | ||||
| CH-3′ | 3.51 | 73.8 | ||||
| CH-4′ | 3.92 | 68.5 | ||||
| CH-1″ | 4.91 * | 99.7 | ||||
| CH-3″,5″ | 3.74 | 70.6 | ||||
| CH-4″ | 3.96 | 70.2 | ||||
| CH2-6″ | 3.82; 3.74 | 61.8 | ||||
| CH2 sn3 | 3.95; 3.72 | 68.5 | ||||
| CH2 sn1 | 4.39; 4.17 | 63.1 | ||||
| β-Sitosterol | CH2-1 | 1.85; 1.07 | 37.6 | L, S | L, F, S | |
| CH2-2 | 1.82 | 31.4 | ||||
| CH-3 | 3.54 | 71.6 | ||||
| CH2-4 | 2.25 | 42.1 | ||||
| CH-6 | 5.34 | 121.8 | ||||
| CH-8 | 1.47 | 32.2 | ||||
| CH-9 | 0.94 | 50.6 | ||||
| CH2-11 | 1.51 | 21.4 | ||||
| CH2-12 | 2.00; 1.17 | 40.0 | ||||
| CH-14 | 1.01 | 57.1 | ||||
| CH2-16 | 1.86 | 28.4 | ||||
| CH-17 | 1.13 | 56.4 | ||||
| CH3-18 | 0.70 * | 12.1 | ||||
| CH3-19 | 1.02 | 19.5 | ||||
| CH-20 | 1.35 | 36.5 | ||||
| CH3-21 | 0.94 | 18.9 | ||||
| CH2-23 | 1.19 | 26.4 | ||||
| CH-24 | 0.95 | 46.1 | ||||
| Campesterol | CH3-18 | 0.70 * | 12.0 | L, S | L, F, S | |
| Stigmasterol | CH3-18 | 0.72 * | 11.9 | L, S |
* Asterisks indicate signals used for integration and quantification of metabolites.