Antioxidant activity of phosphatidyl derivatives of hydroxytyrosol in edible oils
(2014) In European Journal of Lipid Science and Technology 116(8). p.1035-1043- Abstract
A comparative study of the antioxidant activity of hydroxytyrosol (HT) and phosphatidyl derivatives of hydroxytyrosol (PHT) added at increasing concentrations to diverse edible oils (lard oil, refined olive oil, and diacylglycerol-rich oil) was performed. Antioxidant activity index was estimated as the ratio of induction time in presence of the compounds to induction time in their absence, after oxidation under Rancimat conditions. Tocopherol (TOC) and phosphatydilcholine (PC) were used as reference, and combinations PHT:TOC, PHT:PC, HT:TOC, and PC:TOC were also tested. PHT and HT showed a protective effect as the added concentration of antioxidants increased. However, the protective effect of PHT was superior to HT for olive oil and... (More)
A comparative study of the antioxidant activity of hydroxytyrosol (HT) and phosphatidyl derivatives of hydroxytyrosol (PHT) added at increasing concentrations to diverse edible oils (lard oil, refined olive oil, and diacylglycerol-rich oil) was performed. Antioxidant activity index was estimated as the ratio of induction time in presence of the compounds to induction time in their absence, after oxidation under Rancimat conditions. Tocopherol (TOC) and phosphatydilcholine (PC) were used as reference, and combinations PHT:TOC, PHT:PC, HT:TOC, and PC:TOC were also tested. PHT and HT showed a protective effect as the added concentration of antioxidants increased. However, the protective effect of PHT was superior to HT for olive oil and diacylglycerol oil, and similar to HT for lard oil. The magnitude of the protection of both PHT and HT was higher in lard oil, followed by olive oil and the poorest protection was for diacylglycerol oil. Both HT and PHT were superior to TOC. Furthermore, PC showed a lack of antioxidant activity compared to PHT. A lack of synergism between the combinations of antioxidants was found. Practical applications: Including phosphatidyl derivatives of hydroxytyrosol in edible oils provides two advantages. First, they serve as a source of hydroxytyrosol and second they stabilize the lipid matrix, and in this respect the phosphatidyl derivatives perform better than hydroxytyrosol or tocopherols.
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- author
- Martin, Diana ; Garcia-Serrano, Alba LU ; Casado, Víctor ; Vázquez, Luis ; Reglero, Guillermo and Torres, Carlos F.
- publishing date
- 2014-01-01
- type
- Contribution to journal
- publication status
- published
- keywords
- Antioxidants, Edible oils, Hydroxytyrosol, Lipid delivery, Phospholipids
- in
- European Journal of Lipid Science and Technology
- volume
- 116
- issue
- 8
- pages
- 1035 - 1043
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:84905385274
- ISSN
- 1438-7697
- DOI
- 10.1002/ejlt.201400053
- language
- English
- LU publication?
- no
- id
- 53add9f2-8dbf-4074-9732-350ab33ae4f5
- date added to LUP
- 2020-02-05 15:18:25
- date last changed
- 2022-04-18 20:36:47
@article{53add9f2-8dbf-4074-9732-350ab33ae4f5, abstract = {{<p>A comparative study of the antioxidant activity of hydroxytyrosol (HT) and phosphatidyl derivatives of hydroxytyrosol (PHT) added at increasing concentrations to diverse edible oils (lard oil, refined olive oil, and diacylglycerol-rich oil) was performed. Antioxidant activity index was estimated as the ratio of induction time in presence of the compounds to induction time in their absence, after oxidation under Rancimat conditions. Tocopherol (TOC) and phosphatydilcholine (PC) were used as reference, and combinations PHT:TOC, PHT:PC, HT:TOC, and PC:TOC were also tested. PHT and HT showed a protective effect as the added concentration of antioxidants increased. However, the protective effect of PHT was superior to HT for olive oil and diacylglycerol oil, and similar to HT for lard oil. The magnitude of the protection of both PHT and HT was higher in lard oil, followed by olive oil and the poorest protection was for diacylglycerol oil. Both HT and PHT were superior to TOC. Furthermore, PC showed a lack of antioxidant activity compared to PHT. A lack of synergism between the combinations of antioxidants was found. Practical applications: Including phosphatidyl derivatives of hydroxytyrosol in edible oils provides two advantages. First, they serve as a source of hydroxytyrosol and second they stabilize the lipid matrix, and in this respect the phosphatidyl derivatives perform better than hydroxytyrosol or tocopherols.</p>}}, author = {{Martin, Diana and Garcia-Serrano, Alba and Casado, Víctor and Vázquez, Luis and Reglero, Guillermo and Torres, Carlos F.}}, issn = {{1438-7697}}, keywords = {{Antioxidants; Edible oils; Hydroxytyrosol; Lipid delivery; Phospholipids}}, language = {{eng}}, month = {{01}}, number = {{8}}, pages = {{1035--1043}}, publisher = {{John Wiley & Sons Inc.}}, series = {{European Journal of Lipid Science and Technology}}, title = {{Antioxidant activity of phosphatidyl derivatives of hydroxytyrosol in edible oils}}, url = {{http://dx.doi.org/10.1002/ejlt.201400053}}, doi = {{10.1002/ejlt.201400053}}, volume = {{116}}, year = {{2014}}, }