@article{MAKHILLIJTM20105219796,
    title = {In vitro</I> Comparative Antioxidative Potentials of Mango and Pawpaw Leaf Extracts},
    journal = {International Journal of Tropical Medicine},
    volume = {5},
    number = {2},
    pages = {40-45},
    year = {2010},
    issn = {1816-3319},
    doi = {ijtmed.2010.40.45},
    url = {https://makhillpublications.co/view-article.php?issn=1816-3319&doi=ijtmed.2010.40.45},
    author = {P.F.,L.O.,O.O.,M.T. and},
    keywords = {biomarker,active principle,reactive oxygen,scavenger,Bioactive compound,phytoconstituents},
    abstract = {The influence of concentration on hydroxyl radical scavenging and antioxidant activities of polyphenol extracts of Mango and Pawpaw leaves were assessed <I>in vitro</I>. The polyphenol extract from Mango leaves failed to scavenge hydroxyl radical at all the concentrations (50-250 &#956;g mL<SUP>-1</SUP>) while Pawpaw leaves failed to scavenge hydroxyl radical at three different concentrations out of five concentrations investigated (50-250 &#956;g mL<SUP>-1</SUP>). The polyphenol extract from Pawpaw leaves was a poor scavenger of hydroxyl radical <I>in vitro</I> (4.2% maximum scavenging activity). The polyphenol extracts of Mango and Pawpaw leaves exhibited weak antioxidant activities <I>in vitro</I> at all the concentrations investigated. Mango leaves had the highest total phenolic concentration (128 mg mL<SUP>-1</SUP>) at the maximum extraction time (50 min). At 50 min extraction time both the aqueous extracts of the two plants demonstrated maximum antioxidants activity (86.95% for aqueous extract of Mangifera indica and 89.70% for Pawpaw aqueous extract). A non-significant moderate positive correlation was observed between total phenolic concentration and antioxidant activity of aqueous extract of Mangifera indica and that of Pawpaw leaves (r = 0.592; p = 0.05 for Mangifera indica; r = 0.469; p = 0.05 at 20 min extraction time).}
    }