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Effects of phospholipids on the antioxidant activity of α-tocopherol in the singlet oxygen oxidation of canola oil

Paper ID Volume ID Publish Year Pages File Format Full-Text
33483 44980 2011 7 PDF Available
Title
Effects of phospholipids on the antioxidant activity of α-tocopherol in the singlet oxygen oxidation of canola oil
Abstract

This study evaluated the effects of phosphatidylcholine (PC) or phosphatidylethanolamine (PE) on the antioxidative activity of α-tocopherol during oxidation of canola oil by singlet oxygen at 10°C for seven hours. Singlet oxygen was produced by chlorophyll b (4 ppm) under 1700 lux. The oxidation of oil was evaluated by headspace oxygen consumption by gas chromatography and peroxide values (POVs). Concentrations of PC, PE, chlorophyll, and α-tocopherol were determined by HPLC. PC and PE protected chlorophyll from degradation, but they accelerated the degradation of α-tocopherol under singlet oxygen. Contents of PC and PE did not change for seven hours under singlet oxygen. α-Tocopherol significantly lowered POV and headspace oxygen consumption of canola oil under singlet oxygen, and its antioxidant activity was increased by the co-presence of PC and PE. PC and PE increased chemical quenching of singlet oxygen by tocopherol in decreasing the oil oxidation.

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Effects of phospholipids on the antioxidant activity of α-tocopherol in the singlet oxygen oxidation of canola oil
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Publisher
Database: Elsevier - ScienceDirect
Journal: New Biotechnology - Volume 28, Issue 6, October 2011, Pages 691–697
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us