Influence of Harvest Date and Postharvest Treatment on Carotenoid and Flavonoid Composition in French Marigold Flowers

0533875 - BÚ 2021 RIV US eng J - Journal Article
Bhave, A. - Schulzová, V. - Mrnka, Libor - Hajšlová, J.
Influence of Harvest Date and Postharvest Treatment on Carotenoid and Flavonoid Composition in French Marigold Flowers.
Journal of Agricultural and Food Chemistry. Roč. 68, č. 30 (2020), s. 7880-7889. ISSN 0021-8561. E-ISSN 1520-5118
R&D Projects: GA TA ČR TE01020080
Institutional support: RVO:67985939
Keywords : marigold * carotenoid * flavonoid
OECD category: Chemical engineering (plants, products)
Impact factor: 5.279, year: 2020
Method of publishing: Limited access
https://doi.org/10.1021/acs.jafc.0c02042

The aim of this study was to characterize carotenoids and flavonoids present in French marigold flowers (Tagetes patula Durango Red) as well as to assess the effects of harvest dates and postharvest treatments on these compounds. Carotenoids and flavonoids were quantified using their respective standards or semiquantified using relevant related standards. Lutein and its derivatives largely dominated the flower carotenoids, while the flavonoids were diverse with patuletin leading the list. Of the different postharvest treatments, ensilage leads to the highest content of carotenoids (from 5.0 to 7.8 g kg(-1) dw) and flavonoids (from 19 to 50 g kg(-1) dw). The composition of individual flavonoids was greatly influenced by different postharvest treatments, while the influence of harvest dates was secondary. Ensilage and drying induced separate metabolic pathways leading to degradation of high-molecular glycosidic compounds, converting the compounds either to their aglycones or into the intermediate flavonoid glycosides. We conclude that according to the intended industrial application, different postharvest techniques can be employed to acquire desired flavonoids on a large scale.
Permanent Link: http://hdl.handle.net/11104/0313712