10.3389/fpls.2018.00459.s001
Spyridon A. Petropoulos
Spyridon A.
Petropoulos
Carla Pereira
Carla
Pereira
Nikolaos Tzortzakis
Nikolaos
Tzortzakis
Lillian Barros
Lillian
Barros
Isabel C. F. R. Ferreira
Isabel C. F. R.
Ferreira
DataSheet1.docx
Frontiers
2018
antioxidant activity
caffeoylquinic acids
cardoon
flavonoids
nutritional value
phenolic compounds
proximate analysis
seed oils
2018-04-10 06:11:18
Dataset
https://frontiersin.figshare.com/articles/dataset/DataSheet1_docx/6119933
<p>In the present study, the nutritional value of the edible parts (immature capitula) of cardoon plants was evaluated, while further analyses were carried out in order to assess antioxidant properties and phenolic compounds composition of the various plant parts and seed oils. Cardoon capitula (heads) were a rich source of carbohydrates, with the main detected free sugar being sucrose, as well as of macro- and micro-minerals (K, Ca, Mg, and Fe). Heads were also abundant in saturated fatty acids (palmitic, behenic, linoleic, stearic, caproic, and oleic acid), whereas seed oils in unsaturated fatty acids (linoleic, oleic, palmitic, and stearic acid). Total phenolic compounds (TPC) content and phenolics composition differed between the various plant parts, with heads and leaf blades having higher TPC than midribs and petioles. Moreover, heads and leaf midribs and petioles consisted mainly of phenolic acids (5-O-caffeoylquinic and 3,5-O-dicaffeoylquinic acid), with flavonoids being detected in lower amounts. In contrast, the composition of polyphenols in leaf blades consisted mostly of flavonoids (Luteolin-7-O-glucoside and luteolin-7-O-malonylhexoside), whereas phenolic acids were also detected in considerable amounts (5-O-feruloylquinic and 3-O-caffeoylquinic acid). Regarding antioxidant properties, leaf blades and seeds exhibited the highest potency for all the tested assays which could be partly attributed to the synergistic effects of the phenolic compounds present in each sample. In conclusion, cardoon plant parts may find various uses in the food and pharmaceutical industry, since they contain considerable amounts of bioactive molecules, while seed oils can be considered as alternative vegetable oils for human consumption.</p>