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Radical scavenging and anti-lipoperoxidative activities of Smallanthus sonchifolius leaf extracts

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15110%2F05%3A00001996" target="_blank" >RIV/61989592:15110/05:00001996 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Radical scavenging and anti-lipoperoxidative activities of Smallanthus sonchifolius leaf extracts

  • Original language description

    dical scavenging and anti-lipoperoxidative effects of two organic fractions and two aqueous extracts from the leaves of a neglected Andean crop-yacon (Smallanthus sonchifolius Poepp. & Endl., Asteraceae) were determined using various in vitro models. Theextracts' total phenolic content was 10.7-24.6%. They exhibited DPPH (IC50 16.14-33.39 microg/mL) and HO* scavenging activities (4.49-6.51 mg/mL). The extracts did not scavenge phenylglyoxylic ketyl radicals, but they retarded their formation. In the xanthine/xanthine oxidase superoxide radical generating system, the extracts' activities were 26.10-37.67 superoxide dismutase equivalents/mg. As one of the extracts displayed xanthine oxidase inhibitory activity, the effect of the extracts on a nonenzymatically generated superoxide was determined (IC50 7.36-21.01 microg/mL). The extracts inhibited t-butyl hydroperoxide-induced lipoperoxidation of microsomal and mitochondrial membranes (IC50 22.15-465.3 microg/mL). These results make yacon

  • Czech name

    Antiradikálová a antilipoperoxidační aktivita extraktů z listů Smallanthus sonchifolius.

  • Czech description

    Byla studována schopnost dvou organických frakcí a dvou vodných extraktů z listů opomíjené andské plodiny jakonu (Smallanthus sonchifolius Poepp. & Endl, Asteraceae) zhášet volné radikály a inhibovat lipidovou peroxidaci v několika modelech in vitro. Celkový obsah fenolových látek v extraktech byl 10,7 - 24,6 %. Extrakty zhášely DPPH (IC50 16,14 - 33,39 ?g/ml) a HO&#9679; (IC50 4,49 - 6,51 mg/ml). Nezhášely radikály kyseliny fenylglyoxylové, ale zpomalovaly jejich vznik. V systému xantin/xantinoxidasa,tvořícím superoxidový radikál, se aktivity extraktů pohybovaly v rozmezí 26,10 - 37,67 ekvivalentů superoxiddismutasy/mg. Vzhledem k tomu, že jeden z extraktů inhiboval xantinoxidasu, byl testován zhášecí efekt extraktů na superoxid tvořený neenzymatickou cestou (IC50 7,36 - 21,01 ?g/ml). Extrakty inhibovaly lipidovou peroxidaci mikrosomálních a mitochondriálních membrán indukovanou terc-butylhydroperoxidem (IC50 22,15 - 465,3 ?g/ml). Tyto výsledky podporují možné využití listů jakonu ja

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CE - Biochemistry

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Agricultural and Food Chemistry

  • ISSN

    0021-8561

  • e-ISSN

  • Volume of the periodical

    53

  • Issue of the periodical within the volume

    14

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    6

  • Pages from-to

    5577-5582

  • UT code for WoS article

  • EID of the result in the Scopus database