Antioxidative activities and phenolic compounds of pumpkin (Cucurbita pepo) seeds and amaranth (Amaranthus caudatus) grain extracts
PBN-AR
Instytucja
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Natural Product Research (20pkt w roku publikacji)
ISSN
1478-6419
EISSN
1478-6427
Wydawca
DOI
URL
Rok publikacji
2017
Numer zeszytu
18
Strony od-do
2178-2182
Numer tomu
31
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
en
Pumpkin
amaranth
phenolic compounds
antioxidant activity
FRA P
ABTS
DPPH
Streszczenia
Język
en
Treść
Phenolic compounds were extracted from pumpkin (Cucurbita pepo) seed and amaranth (Amaranthus caudatus) grain into 80% (v/v) methanol. The extracts obtained were characterised by the contents of total phenolic compounds (TPC), trolox equivalent antioxidant capacity (TEAC), ferric-reducing antioxidant power (FRAP) and antiradical activity against 2,2-diphenyl-1-picrylhydrazyl (DPPH·) radical. The content of individual phenolic compounds was determined by HPLC-DAD method. Pumpkin seeds showed the higher content of TPC than that from amaranth. The TEAC values of both extracts were similar each other. The lower value of FRAP was observed for pumpkin seed. Phenolic compound present in amaranth grain exhibited strongest antiradical properties against DPPH radical. Several peaks were present on the HPLC chromatograms of two extracts. The UV-DAD spectra confirmed the presence of vanillic acid derivatives in the amaranth grain. The three main phenolic compound present in pumpkin seed were characterised by UV-DAD spectra with maximum at 258, 266 and 278 nm.
Inne
System-identifier
252-001213
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