Kratko priopćenje
https://doi.org/10.17113/ftb.53.01.15.3533
Ultrasound-Assisted Extraction and Biological Activities of Extracts of Brassica oleracea var. capitata
Valéria Dal Prá
; Post-Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, RS, Brazil
Carolina Bolssoni Dolwitsch
; Post-Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, RS, Brazil
Fernanda Oliveira Lima
; Federal University of Fronteira Sul, Cerro Largo, RS, Brazil
Camilo Amaro de Carvalho
; Medical and Nursing Department, Federal University of Viçosa, Viçosa, Brazil
Carine Viana
; Post-Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, RS, Brazil
Paulo Cícero do Nascimento
; Post-Graduate Program in Chemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
Marcelo Barcellos da Rosa
orcid.org/0000-0001-5959-0381
; Post-Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, RS, Brazil
Sažetak
In this work, the antioxidant and antimicrobial activities of Brassica oleracea var. capitata extracts obtained through ultrasound-assisted extraction are evaluated. The extracts obtained using the best extraction conditions were subjected to different hydrolysis conditions before their use in the biological tests. The crude and hydrolysed extracts were characterized using gas chromatography coupled with a mass detector. The use of ultrasound at 30 °C with 60 % (by volume) solvent enabled obtaining a richer extract. All extracts had antioxidant activities against DPPH (13.0–80.0 %), superoxide (35.2–63.2 %) and peroxyl (89.3–99.5 %) radicals, but the use of hydrolysed extracts considerably improved the antioxidant activities. Antimicrobial activities only of the hydrolysed extracts of Brassica oleracea var. capitata were detected. It was confirmed that antioxidant activity of vegetable extracts can be considerably increased when hydrolysis is applied as a pretreatment to their extraction.
Ključne riječi
Brassica oleracea var. capitata; ultrasound-assisted extraction; hydrolysis of extracts; biological activity
Hrčak ID:
136933
URI
Datum izdavanja:
30.3.2015.
Posjeta: 1.958 *