Quinoa as Functional Food? Urinary elimination of ecdysterone after consumption of quinoa alone and in combination with spinach
Open accessAbstract
The phytosteroid ecdysterone is included on the monitoring list of the World Anti-Doping Agency. Therefore, the consumption of food rich in ecdysterone is the focus of a lively debate. Thus, urinary excretion of ecdysterone and its metabolites in humans was investigated following quinoa consumption alone and in combination with spinach. After intake of both preparations, ecdysterone and two metabolites were excreted in urine. Maximum concentrations of ecdysterone ranged from 0.44–5.50µg/mL after quinoa and 0.34– 4.09µg/mL after quinoa with spinach. The total urinary excreted amount as parent drug plus metabolites was 2.60(1.09)% following quinoa and 1.71(0.86)% after combination. Significant differences were found in total urinary excreted amounts of ecdysterone, 14-deoxy-ecdysterone, and 14-deoxy-poststerone. In conclusion, only small proportions of ecdysterone from quinoa and the combination with spinach were excreted in urine. The results indicate that both, quinoa and spinach, are poor sources of ecdysterone.
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Both quinoa and spinach are poor sources of ecdysterone compared to Rhaponticum carthamoides and Ajuga turkestanica.
“It is considered that both quinoa and spinach are poor sources of ecdysterone [36], compared to R. carthamooides and A. turkestanica [5,12,13].”
From Ecdysterone and Turkesterone—Compounds with Prominent Potential in Sport and Healthy Nutrition (2024) · cites this paper as [36]
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References 39 · Cited by 2
- Authors
- Isenmann, E., Yuliandra, T., Touvleliou, K., Broekmann, M., Torre, X. D. L., Botrè, F., Diel, P., & Parr, M. K.
- Affiliations
- German Sport University Cologne (DE)
- Freie Universität Berlin (DE)
- University of Bern (CH)
- Federazione Medico Sportiva Italiana (IT)
- Corresponding author
- Parr, Maria Kristina
- Venue
- bioRxiv (Cold Spring Harbor Laboratory)
- Publisher
- openRxiv
- Published
- 2023-10-10
- OpenAlex
- W4387537408
- Cited by
- 2
- References
- 39
- Citations by year
- 2026: 1 · 2024: 1
- Type
- posted content
- Language
- en
- Open access
- green
- dx.doi.org
- Locations
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
- Funders
- World Anti-Doping Agency (20C07MP)
- Topics
- Social Sciences › Sociology and Political Science › Doping in Sports
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Phytochemical Studies and Bioactivities
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Pharmacological Effects and Assays
- Keywords
- quinoa, spinach, 20-hydroxyecdysone, urinary excretion, phytosteroids, functional foods
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