Plant Foods for Human Nutrition

, Volume 66, Issue 2, pp 196–202 | Cite as

Absorption, Distribution and Elimination of Carnosic Acid, A Natural Antioxidant from Rosmarinus officinalis, in Rats

  • Evelyne H. A. Doolaege
  • Katleen Raes
  • Filip De Vos
  • Roland Verhé
  • Stefaan De Smet
Original Paper

Abstract

The absorption, distribution and elimination of carnosic acid, the main antioxidant found in rosemary was studied, in vivo, in rats. Therefore, carnosic acid was administrated in a single dose, intravenously (20.5 ± 4.2 mg/kg) and orally (64.3 ± 5.8 mg/kg), to four and nine rats, respectively. Blood samples were collected at different time points, and plasma concentrations of carnosic acid were determined using LC-MS. Furthermore, total collection of urine and feces was done during 4 h and 24 h for the intravenous and oral administrations, respectively. After euthanizing the rats, intestinal content, liver and muscle tissue were sampled to determine carnosic acid concentrations. The bioavailability of carnosic acid, after 360 min, was 40.1%. Traces of carnosic acid were found in the rats intestinal content, liver and muscle tissue of abdomen and legs. The recovery of carnosic acid in the feces, 24 h after oral administration, was 15.6 ± 8.2%. Carnosic acid is absorbed into the bloodstream after oral administration in rats and is therefore bioavailable. It was found that carnosic acid in vivo is present in its free form and that its main elimination route is the fecal route.

Keywords

Carnosic acid Rats Absorption Bioavailability Distribution Elimination 

Abbreviations

AUC

area under the curve

CA

carnosic acid

F

bioavailability

IV

intravenous

PO

oral

RA

rosmarinic acid

RE

rosemary extract

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Evelyne H. A. Doolaege
    • 1
  • Katleen Raes
    • 2
  • Filip De Vos
    • 3
  • Roland Verhé
    • 4
  • Stefaan De Smet
    • 1
  1. 1.Laboratory of Animal Nutrition and Animal Product Quality, Department of Animal Production, Faculty of Bioscience EngineeringGhent UniversityMelleBelgium
  2. 2.Research Group EnBiChem, Department of Industrial Engineering and TechnologyUniversity College West-FlandersKortrijkBelgium
  3. 3.Laboratory of Radiopharmacy, Department of Pharmaceutical Analysis, Faculty of Pharmaceutical SciencesGhent UniversityGhentBelgium
  4. 4.Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience EngineeringGhent UniversityGhentBelgium

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