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  1. Rou CN, Yunie Soon Yu Yeap, Gwendoline Cheng Lian Ee, Nur Kartinee Kassim, Saiful Latifah Yazan, Khalid Hamid Musa
    Sains Malaysiana, 2018;47:1749-1756.
    In this paper, antioxidant properties of Aegle marmelos (stem bark, leaves) and Murraya koenigii (stem bark, root) were
    evaluated by 2,2-diphenyl-1-picrylhydrazy (DPPH) free radical scavenging, 2,2’-Azino-bis(3-ethylbenzthiozoline-6-sulfonic
    acid) (ABTS) decolourisation, cupric reducing antioxidant capacity (CUPRAC), ferric reducing antioxidant power (FRAP)
    and linoleic acid/β-carotene assays. The chloroform extract of Murraya koenigii stem bark was found to possess the
    highest antioxidant activity in CUPRAC (1490.89 mgTE/g extract). In contrary, the hexane extract from Aegle marmelos
    leaves exhibited the weakest antioxidant activity in the DPPH assay (81.06 mgTE/g extract). The bioactive compound
    mahanimbine (7) isolated from the stem bark of Murraya koenigii was found to be the most active antioxidant agent
    with TEAC of 927.73 and 1649.31 mgTE/g corresponding to the ABTS and CUPRAC assays, respectively, as well as a good
    lipid peroxidation inhibitor with an inhibitory percentage of 70.95%. These CUPRAC and ABTS assays are the first report
    for Malaysian Murraya koenigii species.
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