Screening and identification of major phytochemical compounds in seeds, sprouts and leaves of Tuscan black kale Brassica oleracea (L.) ssp acephala (DC) var. sabellica L. Issue 14 (18th July 2018)

• Record Type: Journal Article
• Authors: Giorgetti, Lucia; Giorgi, Gianluca; Cherubini, Edoardo; Gervasi, Pier Giovanni; Della Croce, Clara Maria; Longo, Vincenzo; Bellani, Lorenza
• Is Part Of: Natural product research. Volume 32:Issue 14(2018)
• Page Start: 1617
• Page End: 1626
• Publication Date: 2018-07-18
• Subjects: Tuscan black kale -- seeds -- sprouts -- phytochemical composition -- antioxidant activity -- molecular fingerprintings; Natural products -- Periodicals; Natural products -- Research -- Periodicals; Biological Factors -- Periodicals; Biological Products -- Periodicals; 547
• DOI: 10.1080/14786419.2017.1392953
• Languages: English
• ISSNs: 1478-6419

Abstract

Abstract: We report the spectrophotometric determination of total polyphenols, flavonoids, glucosinolates and antioxidant activity in seeds, seedlings and leaves of Tuscan black kale. The highest content of phytochemicals was observed in 10 days sprouts and antioxidant activity was maximum in 2, 4 days seedlings. Identification and characterisation of phytochemicals were performed by mass spectrometry (MS), high resolution and tandem MS with electrospray ionisation mode. Low-molecular-weight metabolites were evidenced in seeds while metabolites at high m/z range were detected in cotyledons and leaves. MS spectra evidenced different phenolic compounds (flavonoid caffeoyl glucose, hydroxycinnamic acid sinapine) and glucosinolates (glucoerucin, glucobrassicin and glucoraphanin) in function of developmental stage; galactolipids ω3 and ω6 were observed in leaves. Identification of stages with the highest phytochemicals content encourages the consumption of black kale sprouts and young leaves. Our research can support food and pharmaceutical industries for production of health promoting products from black kale. Abstract :