@article{Hossain_Sultana_Iftekharuzzaman_Hossain_Taleb_2015, title={Antioxidant potential of common leafy vegetables in Bangladesh}, volume={44}, url={https://www.banglajol.info/index.php/BJB/article/view/22723}, DOI={10.3329/bjb.v44i1.22723}, abstractNote={<p>Amount of polyphenols, flavonoids, anthocyanins in ethanol extracts and antioxidant activity of both ethanol and lipophilic extracts of common leafy vegetables in Bangladesh were compared. Among the 12 leafy vegetables, <em>Ipomoea aquatica </em>Forssk. showed the highest content of total polyphenols (38.9 mg gallic acid equivalent (GAE)/g extract) and flavonoids (23.2 mg (+)-catechin equivalent (CE)/g extract). Highest anthocyanins content was found in <em>Amaranthus gangeticus </em>L. (1.15 ?mol/g extract) followed by <em>Pisum sativum </em>L. (0.85 ?mol/g extract). Ethanol extracts of <em>Brassica campestris </em>L., <em>Enhydra fluctuans </em>Lour., <em>I.</em><em> aquatica</em>, <em>Lagenaria siceraria </em>(Mol.) Standl. and <em>P. sativum </em>exhibited high DPPH free radical scavenging activity with IC<sub>50</sub> of 104.2, 85.5, 26.9, 125 and 68.5 ?g/ml, respectively whereas for the same lipophilic pentane extracts of <em>Basella alba </em>L. showed the lowest (68.4 ?g/ml) IC<sub>50</sub> followed by <em>I.</em><em> aquatica </em>(70.4 ?g/ml), <em>E. fluctuans </em>(75.7 ?g/ml), <em>L. siceraria </em>(78.3 ?g/ml) and <em>B. campestris </em>(80.6 ?g/ml). <em>I.</em><em> aquatica </em>also showed the highest NO free radical scavenging followed by <em>B. campestris </em>and <em>B. alba</em>. Highest reducing power (O.D. = 1.7) was observed for <em>I.</em><em> aquatica </em>followed by <em>P. sativum </em>(O.D. = 1.12), <em>B. alba </em>(O.D. = 0.86) and <em>L. siceraria </em>(O.D. = 0.72) at 400 ?g/ml extract. They also displayed high total antioxidant capacity. Therefore, the top five potential leafy vegetables consist of both hydrophilic and lipophilic antioxidant(s), the order being <em>I.</em><em> aquatica </em>> <em>B. campestris </em>> <em>B. alba </em>> <em>P. sativum </em>> and <em>L. siceraria</em>.</p> <p>DOI: <a href="http://dx.doi.org/10.3329/bjb.v44i1.22723">http://dx.doi.org/10.3329/bjb.v44i1.22723</a></p> <p>Bangladesh J. Bot. <strong>44</strong>(1): 51-57, 2015 (March)</p>}, number={1}, journal={Bangladesh Journal of Botany}, author={Hossain, Sheikh Julfikar and Sultana, M Shahina and Iftekharuzzaman, M and Hossain, S Amir and Taleb, M Abu}, year={2015}, month={Mar.}, pages={51–57} }