Luo, Ziwen Wang, Shanshan Wang, Dongmei Phenolic profiles and antioxidant capacities of crude extracts and subsequent fractions from <i>Potentilla fruticosa</i> L. leaves <p>This work aimed to further investigate the phenolic profiles and antioxidant capacities of the crude extracts and the subsequent fractions of <i>Potentilla fruticosa</i> leaves. Result showed that <i>P. fruticosa</i> leaves contained high amounts for hyperoside, ellagic acid and (+)-catechin contents, and the highest amount being registered for hyperoside (17.67 mg g<sup>−1</sup>). Nine sub-fractions were obtained after column chromatographic separation. EF-3, EF-4, EF-5 and BF-2 presented higher values for their total phenolic or flavonoid, (+)-catechin, ellagic acid and hyperoside content. Besides, EF-3, EF-4, BF-2 and BF-3 showed significant <i>in vitro</i> antioxidant capacities and protective effects on <i>Escherichia coli</i> under peroxide stress. The correlation between chromatograms and antioxidant activity showed that (+)-catechin, ellagic acid and hyperoside may play crucial roles in the antioxidant capacities of <i>P. fruticosa</i> and could be used as chemical markers for its quality assessment. Moreover, this is the first time <i>P. fruticosa</i> leaves have been systematically studied.</p> P. fruticosa leaves;phenolic profiles;antioxidant capacities;HPLC–UV 2015-09-15
    https://tandf.figshare.com/articles/journal_contribution/Phenolic_profiles_and_antioxidant_capacities_of_crude_extracts_and_subsequent_fractions_from_i_Potentilla_fruticosa_i_L_leaves/1569609
10.6084/m9.figshare.1569609.v1