ProtocolsMicellization in vegetable oils: A structural characterisation

- The solubilisation of polar antioxidant in vegetable oils via reverse micelles.
- Structuration of vegetable oils using a bio-sourced emulsifier.
- SWAXS technique is a suitable technique to study polar oils.

The solubilisation of polar and polyphenol antioxidant in vegetable oils was studied. It was shown that the use of a polyglyceryl-3-diisostearate (PG3DS), a bio-sourced emulsifier well known in cosmetics, increases the yield of solubilisation thanks to some aggregation properties analysed using x-ray scattering technique. We show indeed that PG3DS forms reverse aggregates with a critical concentration that depends on the oil polarity. PG3DS reverse aggregates are elongated with a polar core and cannot be really swollen by addition of water. This supramolecular organisation allows however an efficient solubilisation of polar antioxidants in vegetable oils.

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