Glasnik Zaštite Bilja, Vol. 39 No. 5, 2016.
Stručni rad
Bioactive compounds glucosinolates and polyphenols in florets, leaves and stems of broccoli (Brassica oleracea var. italica L.)
Ivana Radojčić Redovniković
; Prehrambeno-biotehnološki fakultet, Sveučilište u Zagrebu
Marina Cvjetko Bubalo
; Prehrambeno-biotehnološki fakultet, Sveučilište u Zagrebu
Manuela Panić
; Prehrambeno-biotehnološki fakultet, Sveučilište u Zagrebu
Kristina Radošević
; Prehrambeno-biotehnološki fakultet, Sveučilište u Zagrebu
Sažetak
Broccoli is rich in bioactive compounds, polyphenols and glucosinolates, and as such considered as functional food and great experimental material. Previous scientific attention had mostly been focussed on composition and amounts of phytochemicals in florets rather than leaves and stem. In this research, content of total and individual glucosinolates, total polyphenols and antioxidative capacity were studied in broccoli florets, leaves and stems. Leaves showed to be the most abundant in glucosinolates with indolyl predominating aliphatic as was also the case in florets. In contrast, stem contained more aliphatic than indolyl glucosinolates. Polyphenol quantity ranged from 9.70-16.11 mg GE g-1 DW in stems, from 17.65-31.08 mg GE g-1 DW in florets and from 22.27-34.02 mg GE g-1 DW in leaves and was the highest in leaves irrespective of extraction method. It was determined that samples containing the highest amounts of polyphenols also had the highest antioxidant activity.
Ključne riječi
broccoli; glucosinolates; ORAC; polyphenolic compunds
Hrčak ID:
168266
URI
Datum izdavanja:
2.11.2016.
Posjeta: 1.994 *