Warianty tytułu
Ocena wlasciwosci przeciwutleniajacych ekstraktow owocow mangostanu wlasciwego - smaczeliny [Garcinia mangostana L.]
Języki publikacji
Abstrakty
The present work was undertaken to assess the radical scavenging and antioxidant properties of the mangosteen (Garcinia mangostana L.) pericarp extracts obtained by various solvents and its mixtures of different polarity. The extracts were evaluated by FRAP (Ferric reducing antioxidant power), ABTS (2,2-azinobis (3-ethylbenzothiazoline-6-sulfonicacid) diammonium salt], DPPH (1,1-diphenyl-2-picrylhydrazyl), reducing power and chelating ability on ferrous ion. Among the different extracts studied, ethyl acetate and acetone extract were observed to have good antioxidant activity. The FRAP values for ethyl acetate and acetone extract were 1.30 and 1.01 mM TEAC respectively at 1 mg/ml. The TEAC values for ABTS assay were 38.21 and 38.15 μM respectively at 100 μg/ml. The IC50 values to quench the DPPH free radicals of these two extracts were 30.01 μg/ml and 33.32 μg/ml, but the chelating assay was observed to be better in aqueous fractions of Acetone: water (80:20) at 12 mg/ml. From the above results it can be inferred that ethyl acetate and acetone were suitable solvent to extract the antioxidant compounds form mangosteen.
W pracy podjęto próbę oznaczenia aktywności przeciwrodnikowej i prze-ciwutleniającej ekstraktów owoców mangostanu właściwego – smaczeliny (Garcinia mangostana L.) uzyskanych na drodze ekstrakcji rozpuszczalnikami o różnej polarności. Ocena obejmowała oznaczenie FRAP, ABTS+°, DPPH°, siły redukującej oraz zdolności chelatowania jonów żelaza. Spośród badanych ekstraktów największą aktywność przeciwutleniającą stwierdzono w próbach ekstrahowanych octanem etylu i acetonem. Wartości oznaczeń FRAP dla stężenia 1 mg/ml ekstraktów octanu etylu i acetonu wynosiły odpowiednio: 1,30 i 1,01 mM TEAC, natomiast dla oznaczeń ABTS wynosiły 38,21 i 38,15 mM. Stwierdzono, że wartości IC50 zmiatania rodników DPPH obu wymienionych ekstraktów wynosiły odpowiednio 30,01 i 33,32 μ/ml. Analiza wyników dotyczących zdolności chelatowania jonów żelaza wskazała na większą aktywność frakcji wodnej ekstraktów aceton – woda (80:20). Na podstawie uzyskanych wyników badań można stwierdzić, że zarówno octan etylu, jak i aceton są odpowiednimi rozpuszczalnikami wykorzystanymi do ekstrakcji związków przeciwutleniających z owocni mangostanu.
Słowa kluczowe
Wydawca
Rocznik
Tom
Numer
Strony
23-34
Opis fizyczny
p.23-34,fig.,ref.
Twórcy
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
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