Effects of organic and conventional growth systems on the content of carotenoids in carrot roots, and on intake and plasma status of carotenoids in humans
Abstract
BACKGROUND: The demand for organic food products has increased during the last decades due to their probable health effects, among others. A higher content of secondary metabolites such as carotenoids in organic food products has been claimed, though not documented, to contribute to increased health effects of organic foods. The aim was to study the impact of organic and conventional agricultural systems on the content of carotenoids in carrots and human diets. In addition, a human cross-over study was performed, measuring the plasma status of carotenoids in humans consuming diets made from crops from these agricultural systems. RESULTS: The content of carotenoids in carrot roots and human diets was not significantly affected by the agricultural production system or year, despite differences in fertilisation strategy and levels. The plasma status of carotenoids increased significantly after consumption of the organic and conventional diets, but no systematic differences between the agricultural production systems were observed. CONCLUSION: The expected higher content of presumed health-promoting carotenoids in organic food products was not documented in this study.
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There are only two human dietary intervention studies in which contrasting antioxidant/(poly)phenolic intake levels were generated by conventional and organic diets; both were inconclusive regarding health impacts.
“There are, to our knowledge, only two human dietary intervention studies in which contrasting antioxidant/(poly)phenolic intake levels were generated by providing diets based on conventional and organic crops; both studies focused on assessing antioxidant status in humans and were inconclusive with respect to the identification of potential health impacts of organic food consumption( 21 , 42 , 43”
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- Authors
- Søltoft, M., Bysted, A., Madsen, K. H., Mark, A. B., Bügel, S. G., Nielsen, J., & Knuthsen, P.
- Affiliations
- University of Copenhagen (DK)
- Technical University of Denmark (DK)
- Corresponding author
- Knuthsen, Pia
- Venue
- Journal of the Science of Food and Agriculture
- Publisher
- Wiley
- Published
- 2011-01-06
- Volume
- 91
- Issue
- 4
- Pages
- 767-775
- ISSN
- 0022-5142 (ISSN-L)
- 1097-0010
- OpenAlex
- W1985330525
- Cited by
- 65
- References
- 48
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 5 · 2020: 7 · 2019: 6 · 2018: 2 · 2017: 4 · 2016: 3 · 2015: 3 · 2014: 4 · 2013: 4 · 2012: 7
- FWCI
- 5.78
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of the Science of Food and Agriculture (publishedVersion)
- PubMed (publishedVersion)
- Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) (acceptedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
- Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion)
- Funders
- Internationalt Center for Forskning i Økologisk Jordbrug og Fødevaresystemer
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Organic Food and Agriculture
- Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
- Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
- Keywords
- organic farming, conventional farming, carrot roots, carotenoids, dietary carotenoids, plasma carotenoids, organic food, fertilization, human diet, cross-over study
- MeSH terms
- Adolescent, Adult, Carotenoids, Diet, Double-Blind Method, Humans, Male, Plant Roots, Daucus carota, Cross-Over Studies, Young Adult, Organic Agriculture
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