Bioavailability and Absorption Kinetics of Phenolic Compounds and Specific Vitamins

Phytonutrients are regarded to play an important role in many health-related issues like:

- Improvement of redox balance

- Anti-inflammatory effects

- Prevention of chronic diseases like CVD, stroke, diabetes II, Alzheimer´s, AMD, and certain forms of cancer

- Beneficial effects on human´s microbiome Therefore it is of scientific interest whether this product provides absorbable phytonutrients/phenolics and vitamins to support mechanistic explanations for the beneficial outcomes observed in the past after intake of Juice Plus+®.

GOAL To identify absorption kinetics and bioavailability of phenolic compounds and specific vitamins from encapsulated Juice Plus+® powder

MERITS

- This study would reveal knowledge whether and to which extent specific vitamins and phenolic compounds are absorbed, including absorption kinetics/metabolism.

- Data of this study may provide support for mechanistic arguments on the beneficial clinical outcomes observed and published in the past.

ENDPOINTS

- Absorption kinetics of phenolic compounds in plasma

- Bioavailability of vitamins C, E, and carotenoids into plasma

Absorption kinetics of phytonutrients:

- Open-, one-arm study, absorption kinetics over 10 hours

- 5 blood sample collections: baseline (= 0); 1hr, 2hrs, 5hrs and 10 hours after intake of 3 capsules

- Wash-out of all food supplements and dietetic foodstuff: 2 weeks

- Wash-out of phytonutrients: 48 hours before baseline sampling, accomplished via a phytonutrient-poor diet.

Bioavailability of vitamins C, E, A and carotenoids:

- Open-, one-arm study over 8 weeks

- 2 blood sample collections: at baseline (2 weeks after the phenolics experiment) and after 8-weeks

- Wash-out of all food supplements and dietetic foodstuff: 4 weeks, 2 weeks before the phenolics experiment + another 2 weeks Subjects: 20 healthy subjects from Graz region, meeting all inclusion criterions (see underneath).