Bioavailability of Hydroxytyrosol in Healthy Adult Humans

Brief summary: There is current scientific interest in hydroxytyrosol due to its anti-inflammatory and antioxidant properties, efficient protection of vascular tissue and ability to neutralise free radicals via hydrogen donation. Recognised as the potent polyphenol within a commercially available olive-fruit water (OliPhenolia®), data from this research will determine the dose of OliPhenolia® required for the optimum absorption and metabolism of hydroxytyrosol. The primary aim of this research is to identify the dose of hydroxytyrosol (0.5, 1.0 or 1.5 mg∙kg-1) within OliPhenolia® that demonstrates the greatest area under the plasma concentration curve for hydroxytyrosol over a four-hour period. A secondary aim is to assess maximum concentration (CMAX) and time to maximum concentration (TMAX) of total hydroxytyrosol and secondary metabolites (Tyrosol, HT-3-glucoronide, HT-3-sulphate, 3,4-Dihydroxyphenylacetic Acid, Homovanillic Acid and Oleuropein) following consumption of 3 randomised doses of OliPhenolia® on separate occasions with healthy adult volunteers.