Abstract
Effects of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) on the oxidative stability were determined in soybean oil–water system at different locations including at the interface of air–oil, in the middle of oil, and at the interface of oil–water. Also, profile changes of tocopherols were determined during UV irradiation for 18 days. Although no significant changes in tocopherol profiles were observed at three different locations irrespective of DOPC from 0 to 1250 μmol/kg oil, addition of DOPC increased total tocopherols, α-tocopherol, and δ-tocopherol whereas content of β + γ tocopherols did not increase at any locations. Moisture content in water–oil interface was higher than other locations while those were not consistent at different DOPC concentration. Added DOPC significantly decreased oxidative stability from 250 to 830 μmol/kg oil compared to controls (p < 0.05) whereas 1250 μmol/kg oil DOPC increased oxidative stability. Stabilities of tocopherols especially α-tocopherol were lower in oil–water system than those in bulk oil at UV irradiation.
| Original language | English |
|---|---|
| Pages (from-to) | 479-486 |
| Number of pages | 8 |
| Journal | Food Science and Biotechnology |
| Volume | 29 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1 Apr 2020 |
Keywords
- Interface
- Oxidative stability
- Phospholipid
- Tocopherol profile
- UV irradiation