Table 3. Major non polar metabolites annotated in M. zapota fruit methanol extract via HRUPLC/MS/MS in positive ion mode.
| Peak No. | Rt (min.) | Mol. Ion (M+H) + | Error (ppm) | Molecular formula | MS/MS fragments | Identification | Class |
|---|---|---|---|---|---|---|---|
| 1 | 0.987 | 166.0862 | +0.33 | C9H11NO | 121, 120, 103 | Phenylalanine | Amino acid |
| 2 | 2.476 | 139.0755 | −1.04 | C8H10O2 | 124, 121, 120 | Styrene glycol | Alcohol |
| 3 | 4.622 | 262.2371 | +2.18 | C14H31NO3 | 226, 122 | Tetradecaphytosphingosine | Sphingolipid |
| 4 | 5.459 | 230.2474 | +1.92 | C14H31NO | 213, 212, 109 | Unknown | Nitrogenous |
| 5 | 5.631 | 290.2688 | +0.59 | C16H35NO3 | 272, 254,242 | LCBs (16;0) | Sphingolipid |
| 6 | 5.645 | 272.2576 | +2.97 | C16H33NO2 | 254, 236, 224 | Hexadecasphingosine | Sphingolipid |
| 7 | 5.73 | 288.2527 | +2.16 | C16H33NO3 | 227, 116, 102 | Unknown amide | Nitrogenous lipid |
| 8 | 5.964 | 316.2836 | +3.24 | C18H37NO3 | 298,286, 281, 280, 262, 256, 141 | Dehydrophytosphingosine | Sphingolipid |
| 9 | 6.388 | 302.3047 | +2.18 | C18H39NO2 | 284, 106, 102 | Tetradecyldiethanolamine | Nitrogenous lipid |
| 10 | 6.41 | 318.2997 | +1.8 | C18H39NO3 | 300, 282, 264 | Phytosphingosine | Sphingolipid |
| 11 | 6.624 | 300.2891 | +2.02 | C18H37NO2 | 282, 264 | Sphingosine | Sphingolipid |
| 12 | 7.063 | 415.2108 | +2.48 | C20H33NO6P | 354 | Unknown PE | Phospholipid |
| 13 | 7.145 | 330.3361 | +1.69 | C20H43NO2 | 312,106,102 | Hexadecyl diethanolamine | Nitrogenous lipid |
| 14 | 7.289 | 478.2936 | −1.64 | C23H45NO7P | 337 | LysoPE(0:0/18:2) | Phospholipid |
| 15 | 7.833 | 454.2918 | +2.24 | C21H44NO7P | 313 | LysoPE(0:0/16:0) | Phospholipid |
| 16 | 8.014 | 358.368 | −0.12 | C22H47NO2 | 340, 322, 270 | Unknown | Unknown |
| 17 | 10.59 | 256.2632 | +1.14 | C16H33NO | 239, 238,209, 116, 102 | Palmitamide | Fatty acyl amide |
| 18 | 10.90 | 282.2785 | +2.28 | C18H35NO | 247, 135, 121, 111, 102 | Octadecenamide (Oleamide) | Fatty acyl amide |
| 19 | 10.94 | 331.2843 | −0.04 | C19H38O4 | 313, 109 | Hexadecanoyl- glycerol | Fatty acyl ester |
| 20 | 11.10 | 512.503 | +1.41 | C32H65NO3 | 284 | Tetradecanoyl-sphinganine | Sphingolipid |
| 21 | 11.90 | 284.2937 | +3.85 | C18 H37NO | 200, 174,130, 116, 102 | Octadecanamide (Steramide) | Fatty acyl amide |
| 22 | 12.02 | 310.3099 | +1.75 | C20H39NO | 293,292, 275, 268, 247, 135,121,111,109 | Eicosenamide | Fatty acyl amide |
| 23 | 12.25 | 359.3153 | +0.8 | C21H42O4 | 341, 267, 239,112, 109 | Glyceryl Monostearate | Fatty acyl ester |
| 24 | 12.36 | 540.5345 | +0.97 | C34H69NO3 | 307,286,285,284 | Palmitoylsphinganine | Sphingolipid |
| 25 | 12.40 | 568.566 | +0.57 | C36H73NO3 | 285, 284, 264 | Heneicosanoyl-pentadecasphinganine | Sphingolipid |
| 26 | 13.08 | 312.3258 | +0.94 | C20H41NO | 182, 116,112, 102 | Icosanamide | Fatty acyl amide |
| 27 | 13.15 | 338.3414 | +1.01 | C22H43NO | 339, 321,320,303. 265,247, 135, 121 | Erucamide | Fatty acyl amide |
| 28 | 13.16 | 675.6761 | +0.16 | C44H86N2O2 | 338, 321, 303,121, 111,109 | Erucamide dimer | Fatty acyl amide |
| 29 | 13.27 | 732.5612 | +1.13 | C40H77NO10 | 570, 552, 314, 262 | Cerebroside(araliacerebroside) | Sphingolipid |
| 30 | 14.14 | 302.305 | +1.18 | C18H39NO2 | 285,284, 217 | Octadecasphinganine | Sphingolipid |
| 31 | 14.34 | 429.3715 | +2.82 | C29H48O2 | 401, 371, 345, 205, 203, 187,165 | Dehydrotocopherol | Tocopherol |
Notes.
LCBs, long-chain bases sphingolipid