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Leaves extract of  Ginkgo biloba , known in China since the most ancient times, has been widely used in the area of senile dementia thanks to its improving effects on cognitive function. A promising formulation of this botanical ingredient consists in a  Ginkgo biloba -soy-lecithin-phosphatidylserine association obtained by the Phytosome ®  process. The precise assessment of the mixing degree between  Ginkgo biloba  and soy-lecithin-phosphatidylserine in this formulation is an important piece of information for understanding the reasons of its final performances. To this aim in the present study we carried out for the first time a Solid State Nuclear Magnetic Resonance investigation on  Ginkgo biloba -soy-lecithin-phosphatidylserine association, on its constituents and on a mechanical mixture. The analysis of different observables highlighted a very intimate mixing (domains of single components not larger than 60 nm) of  Ginkgo biloba  and soy-lecithin-phosphatidylserine in their association obtained by Phytosome ®  process, together with a slight modification of their molecular dynamics, not observed in the case of the mechanical mixture.

chemistry africa

Solid State NMR Study of the Mixing Degree Between Ginkgo Biloba Extract and a Soy-Lecithin-Phosphatidylserine in a Composite Prepared by the Phytosome® Method