A new version of this entry is available:
Loading...
Article
2026
Comparative analysis of minerals, carotenoids, and tocochromanols in ripe seeds, immature seeds and tepals of bitter and non-bitter quinoa genotypes
Comparative analysis of minerals, carotenoids, and tocochromanols in ripe seeds, immature seeds and tepals of bitter and non-bitter quinoa genotypes
Abstract (English)
Quinoa (Chenopodium quinoa Willd.) contains high amounts of minerals, carotenoids and vitamin E (tocochromanols), but also antinutrients, such as saponins. Based on their saponin content, quinoa can be classified into “bitter” and “non-bitter” genotypes. Carotenoids (lutein, zeaxanthin, β-carotene, β-cryptoxanthin), vitamin E and saponins share a precursor in their respective biosynthesis pathways. Thus, we investigated whether the downregulation of saponin biosynthesis in non-bitter quinoa affects the contents of minerals and lipid-soluble compounds compared to bitter quinoa. The analytes were quantified in ripe seeds of fifty (23 bitter and 27 non-bitter) quinoa genotypes. A subset of twelve genotypes (6 bitter and 6 non-bitter) was analyzed for carotenoids and tocochromanols in immature seeds and their tepals. Total mineral (8206 mg/kg vs. 8646 mg/kg) and carotenoid contents (314 µg/100 g vs. 242 µg/100 g) did not differ between bitter and non-bitter ripe seeds. However, non-bitter quinoa seeds contained higher lutein and total tocochromanol (driven by tocotrienols) contents than bitter genotypes. Carotenoid and tocochromanol contents in immature seeds and tepals did not differ between phenotypes; tepals had up to 74-fold higher contents than the seeds. In conclusion, the downregulation of saponin biosynthesis in non-bitter quinoa genotypes does not affect the biosynthesis of carotenoids and tocochromanols.
File is subject to an embargo until
This is a correction to:
A correction to this entry is available:
This is a new version of:
Other version
Notes
Publication license
Publication series
Published in
Journal of food composition and analysis, 152 (2026), 109021.
https://doi.org/10.1016/j.jfca.2026.109021.
ISSN: 0889-1575
Other version
Faculty
Institute
Examination date
Supervisor
Cite this publication
Lauer, L. A., Kollmar, M., Schmöckel, S. M., & Frank, J. (2026). Comparative analysis of minerals, carotenoids, and tocochromanols in ripe seeds, immature seeds and tepals of bitter and non-bitter quinoa genotypes. Journal of food composition and analysis, 152. https://doi.org/10.1016/j.jfca.2026.109021
Edition / version
Citation
DOI
ISSN
ISBN
Language
English
Publisher
Publisher place
Classification (DDC)
630 Agriculture
Original object
University bibliography
Free keywords
Carotenoids Methyl erythritol phosphate pathway Mevalonate pathway Minerals Quinoa genotypes Saponins Tocopherols
Standardized keywords (GND)
Sustainable Development Goals
BibTeX
@article{Lauer2026,
url = {https://hohpublica.uni-hohenheim.de/handle/123456789/18996},
doi = {10.1016/j.jfca.2026.109021},
author = {Lauer, Luise Amelie and Kollmar, Marius and Schmöckel, Sandra M. et al.},
title = {Comparative analysis of minerals, carotenoids, and tocochromanols in ripe seeds, immature seeds and tepals of bitter and non-bitter quinoa genotypes},
journal = {Journal of food composition and analysis},
year = {2026},
volume = {152},
}