Table 4.
Volatile profiles of between red and white pulp pitaya varieties detected by PDMS and PDMS/DVB fibers.
| Category | PDMS- Red |
PDMS- White |
PDMS/DVB Red |
PDMS/DVBWhite | PDMS | PDMS/DVB | Volatile Compounds Extracted by Both SPME Fibers |
|---|---|---|---|---|---|---|---|
| Alcohol | 2 | 2 | 3 | 1 | 5 | 4 | Tridecyl alcohol |
| Terpenes | 1 | 1 | 0 | 0 | 1 | 0 | - |
| Ketones | 1 | 1 | 0 | 3 | 1 | 4 | - |
| Aldehydes | 4 | 6 | 9 | 3 | 13 | 9 | (E)-2-Decenal, Hexanal, Nonanal, Octanal, trans 2 dodecenal |
| Esters | 0 | 0 | 0 | 1 | 0 | 1 | - |
| Acids | 5 | 4 | 4 | 5 | 9 | 9 | Hexanoic acid, Nonanoic acid, Octanoic acid, Pentadecanoic acid |
| Other compounds | 2 | 2 | 4 | 1 | 3 | 5 | 2,6-bis(1,1-dimethylethyl)-4-methyl- Phenol, Tridecane |
| Total | 15 | 16 | 20 | 14 | 32 | 32 | 13 |
Note: PDMS-Red/PDMS/DVB-Blue; volatiles extracted by PDMS and PDMS/DVB fiber in red and white pitaya.