Influence of cultivation sites on sterol, nitrate, total phenolic contents and antioxidant activity in endive and stem chicory edible products.

Auteur(s) :
D'Acunzo F., Giannino D., Longo V., Ciardi M., Testone G., Mele G., Nicolodi C., Gonnella M., Renna M., Arnesi G., Schiappa A., Ursini O.
Date :
Fév, 2017
Source(s) :
International journal of food sciences and nutrition. #68:1 p52-64
Adresse :
Institute of Agricultural Biology and Biotechnology (IBBA), Unit of Rome, National Research Council of Italy (CNR) , Monterotondo Scalo (RM) , Italy.

Sommaire de l'article

Chicories produce a wide range of vegetables with important nutritional value. We determined the variation of sterol, total polyphenol, nitrate contents and antioxidant capacity (SC, TPC, NC, AC) in endive leaves and stem-chicory novel vegetables, cultivated in two Italian regions. Within a given area, the SC was similar in smooth- and curly leafed endives (106.3-176.0 mg/kg FW); sitosterol and stigmasterol were major fractions (45-56 versus 38-43%). The stem SC was independent of landrace (101.5-118.6 mg/kg FW); sitosterol prevailed on stigmasterol and fucosterol (73-76 versus 12-14% versus 8-9%); the latter reached 15.7 mg/kg FW, conferring value as potential antidiabetes food. The planting site affected the AC and TPC of endives (893.1-1571.4 μmTE/100 g FW, 30.8-76.1 GAE100/g FW) and chicory stems (729.8-1152.5 μmTE/100 g FW; 56.2-124.4 GAE100/g FW), while the NC was recurrently below dangerous thresholds. PCA showed that environment was the major cause of variation, though it modestly affected these parameters.

Source : Pubmed