Thin α-tocopherol films separating two aqueous phases

Seufert, Wolf D.; Beauchesne, Gaetan; Bélanger, Marcel

doi:10.1016/0005-2736(70)90108-2

Cited by 11 publications

(1 citation statement)

References 9 publications

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“…Some of the tocopherol added to membrane suspensions in this study may aggregate and form micellar or other structures in the aqueous phase (30,31), possibly emulsified with proteins and small amounts of membrane and/or neutral lipids. The studies of Kagan and colleagues (23) and Kagan and Quinn (32) showed that α-tocopherol and its homologs are capable of aggregating in water.…”

Section: Resultsmentioning

confidence: 99%

Partitioning of ρ‐tocopherol in aqueous mixtures of TAG and isolated muscle membranes

Sigfusson

Hultin

2002

J Americ Oil Chem Soc

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To study the uptake of δ-tocopherol by aqueous suspensions of membranes isolated from chicken muscle and the partitioning of the antioxidant in mixtures of chicken TAG and membranes, δ-tocopherol was added to suspensions of these components and they were centrifuged. In an aqueous suspension of membranes only, the tocopherol uptake increased linearly with tocopherol concentration, at about 50% of the added δ-tocopherol at all concentrations. The incorporation of tocopherol into the membranes was independent of incubation temperature in the range of 0-37°C. Studies with aqueous mixtures of membranes and TAG suggested a very low exchange of tocopherol between the different lipid fractions upon mixing when the tocopherol resided initially in one lipid fraction. Adding δ-tocopherol in ethanol favored incorporation of the antioxidant into the membranes; little antioxidant was incorporated into the membranes when it was added to the suspensions in oil. The results suggest that partitioning of exogenous δ-tocopherol between TAG and membrane lipids in muscle foods may be controlled in part by proper selection of the solvent in which it is added.

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Section: Resultsmentioning

confidence: 99%

Partitioning of ρ‐tocopherol in aqueous mixtures of TAG and isolated muscle membranes

Sigfusson

Hultin

2002

J Americ Oil Chem Soc

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The biochemical modes of action of vitamin e and selenium: A hypothesis

1973

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In this paper recent experimental work on rat liver is discussed which is considered to indicate that a primary function of vitamin E in vivo may be to inhibit the oxidation of selenide‐containing proteins present in mitochondria and in smooth endoplasmic reticulum. On the basis of molecular model building studies, it is also suggested that the well‐known nutritional relationships between vitamin E and dietary polyunsaturated lipids may be due to the occurrence within normal membranes of specific complexes between the vitamin and some of the molecules of polyunsaturated phospholipids. Without the vitamin, membranes may have an abnormally high permeability and they may be subject to degradation by endogenous phospholipases in vivo, as well as being abnormally susceptible to damage in vitro by dialuric acid and hydrogen peroxide.

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Interfacial Photochemistry of Bilayer Lipid Membranes

Tien

Chen

1974

Progress in Surface and Membrane Science

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Thin α-tocopherol films separating two aqueous phases

Cited by 11 publications

References 9 publications

Partitioning of ρ‐tocopherol in aqueous mixtures of TAG and isolated muscle membranes

Partitioning of ρ‐tocopherol in aqueous mixtures of TAG and isolated muscle membranes

The biochemical modes of action of vitamin e and selenium: A hypothesis

Interfacial Photochemistry of Bilayer Lipid Membranes

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