Antioxidant activity of the crude extracts of drumstick tree [Moringa oleifera Lam.] and sweet broomweed [Scoparia dulcis L.] leaves

• Autorzy: Pari L. , Karamac M. , Kosinska A. , Rybarczyk A. , Amarowicz R.

Warianty tytułu

PL

Aktywnosc przeciwutleniajaca surowych ekstraktow z lisci Moringa oleifera Lam. i Scoparia dulcis L.

• Języki publikacji: EN

Abstrakty

EN

The crude extracts of phenolic compounds were obtained from drumstick (Moringa oleifera Lam.) and sweet broomweed (Scoparia dulcis L.) leaves. The content of total phenolics in the extracts was determined using the Folin-Ciocalteu's phenol reagent. Phenolic compounds present in the crude extracts showed antioxidant properties as revealed by the following determinations: the Total Antioxidant Activity (TAA), DPPH radical scavenging activity, and reducing power. The content of total phenolics in the extract of Moringa oleifera leaves was 118 mg/g. The lower content of the total phenolics was noted for the Scoparia dulcis leaves extract: 88 mg/g. The extract of Moringa oleifera was characterized by the higher value of the TAA (0.636 μmol Trolox/mg) than Scoparia dulcis (0.432 μmol Trolox/mg). For the extracts of Moringa oleifera also the stronger antiradical activity against DPPH radical and reducing power were noted. Phenolic acids (derivatives of caffeic, p-coumaric or ferulic acids) were the dominant phenolic constituents of Moringa olifera leaves extract.

PL

Ekstrakty związków fenolowych uzyskano z liści Moringa oleifera Lam i Scoparia dulcis L. Zawartość związków fenolowych ogółem oznaczono kolorymetrycznie z odczynnikiem fenolowym Folina i Ciocalteu’a. Do analizy aktywności przeciwutleniającej ekstraktów zastosowano pomiar całkowitej aktywności przeciwutleniającej (TAA), zmiatanie wolnego rodnika DPPH oraz zdolność redukcyjną. Zawartość fenoli ogółem w ekstrakcie z liści Moringa oleifera wyniosła 118 mg/g. Niższą wartość zanotowano dla ekstraktu z liści Scoparia dulcis: 88 mg/g. Ekstrakt z liści Moringa oleifera charakteryzował się wyższą wartością TAA (0.636 μmol Trolox/mg) niż ekstrakt z liści z Scoparia dulcis (0.432 μmol Trolox/mg). Pierwszy z powyższych ekstraktów wykazywał też silniejszą aktywność przeciwrodnikową wobec DPPH i silniejsze właściwości redukcyjne. W ekstrakcie z liści Moringa oleifera dominowały fenolokwasy – pochodne kwasu kawowego, p-kumarowego i ferulowego.

Słowa kluczowe

EN

crude extract; phenolic compound; drumstick tree; Moringa oleifera; sweet broomweed; Scoparia dulcis; leaf; antioxidant activity; phenolic acid; plant extract

• Wydawca: -
• Czasopismo: Polish Journal of Food and Nutrition Sciences
• Rocznik: 2007
• Tom: 57
• Numer: 2
• Opis fizyczny: p.203-208,fig.,ref.

Twórcy

autor

Pari L.

• Annamalai University, Tamil Nadu, India

autor

Karamac M.

autor

Kosinska A.

autor

Rybarczyk A.

autor

Amarowicz R.

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