Table 1.
Identification of the main compounds in the soluble fraction of the alkaline hydrolysis of the P. ixocarpa cutin.
| # | Rt | Name | Fragments | [M-H]−obs | [M-H]−exact | Formula | Error | % RA |
|---|---|---|---|---|---|---|---|---|
| 1 | 0.7 | 9,10,18-trihydroxy-octadecanoic acid | 172, 189, 202, 287 | 331.2526 | 331.2490 | C18H36O5 | −10.7 | 44.7 |
| 2 | 0.8 | 9,10-epoxy-18-hydroxy-octadecanoic acid | 171, 184, 269 | 313.2424 | 313.2384 | C18H34O4 | −12.7 | 37.5 |
| 3 | 0.9 | 9,10-epoxy-12Z-18-hydroxy-octadecenoic acid | 142, 184, 210, 267 | 311.2267 | 311.2216 | C18H32O4 | −12.5 | 5.7 |
| 4 | 1.1 | 18-hydroxyoleic acid | 155, 253 | 297.2435 | 297.2424 | C18H34O3 | 12.1 | 9.7 |
| 5 | 1.3 | 18-hydroxyoctadecanoic acid | 255, 282 | 299.2630 | 299.2580 | C18H36O3 | 12.8 | 0.6 |
| 6 | 2.5 | Oleic acid | 142, 237 | 281.2511 | 281.2475 | C18H34O2 | −9.0 | 0.8 |
| 7 | 2.6 | Palmitic acid | 211 | 255.2326 | 255.2330 | C16H32O2 | −0.8 | 0.8 |
[M-H]−exact: molecular weight exact, [M-H]−obs: molecular weight observed, % RA: % relative area. Error [ppm]: absolute value of the deviation between measured mass and theoretical mass of the selected peak in [ppm].