Influence of free fatty acids, sterols and phospholipids on volatile compounds in olive oil headspace determined by solid phase microextraction-gas chromatography
Koprivnjak, O; Brkic Bubola, K; Majetic, V; Skevin, D
| HERO ID | 4944143 |
|---|---|
| In Press | No |
| Year | 2009 |
| Title | Influence of free fatty acids, sterols and phospholipids on volatile compounds in olive oil headspace determined by solid phase microextraction-gas chromatography |
| Authors | Koprivnjak, O; Brkic Bubola, K; Majetic, V; Skevin, D |
| Journal | Zeitschrift fuer Lebensmitteluntersuchung und -Forschung A |
| Volume | 229 |
| Issue | 3 (Jul 2009) |
| Page Numbers | 539 |
| Abstract | In order to study the influence of some polar compounds, naturally present in virgin olive oils (VOOs), on the volatiles release, the volatiles-free olive oil matrix was enriched with free fatty acids (FFA) (concentration range from 0.35 to 1.40 g/100 g), sterols (1.0-2.5 g/kg) and phospholipids (1.6-6.0 g/kg). Sixteen standards of VOO aroma compounds were dissolved in thus obtained olive oil matrices. Volatile compounds were analysed by headspace solid phase microextraction with DVB/CAR/PDMS fibre and gas chromatography with flame ionization detection. Evaluation of the data by statistical analysis revealed that FFA, sterols and phospholipids, in concentration ranges considered in this study, generally did not significantly influence the determination of VOO volatiles. The most important changes occurred in the release of the three alcohols (Z-2-penten-1-ol, 1-hexanol and E-3-hexen-1-ol) and 3-methylbutyl acetate which slightly decreased upon the increase of FFA concentration. [PUBLICATION ABSTRACT] |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Studies; Fatty acids; Food science; Olive oil |