<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bouzghaia, Badra</style></author><author><style face="normal" font="default" size="100%">Ben Moussa, Mohammed</style></author><author><style face="normal" font="default" size="100%">Goudjil, Rima</style></author><author><style face="normal" font="default" size="100%">Harkat, Hassina</style></author><author><style face="normal" font="default" size="100%">Pale, Patrick</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Chemical composition, in vitro antioxidant and antibacterial activities of Centaurea resupinata subsp. dufourii (dostál) greuter</style></title><secondary-title><style face="normal" font="default" size="100%">Natural Product Research</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01 2021</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.tandfonline.com/doi/abs/10.1080/14786419.2020.1715397</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">22</style></number><volume><style face="normal" font="default" size="100%">35</style></volume><pages><style face="normal" font="default" size="100%">1-5</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p style=&quot;text-align: justify;&quot;&gt;
	The current study focuses on the chemical composition, and evaluation of antioxidant and antibacterial activity of the aerial parts of&amp;nbsp;Centaurea resupinata&amp;nbsp;subsp.&amp;nbsp;dufourii. Using different chromatographic methods nine compounds 1–9 were isolated. The structural identification of isolated compounds was achieved using several spectroscopic methods NMR techniques (1H NMR,&amp;nbsp;13C NMR, COSY, HSQC, HMBC) and mass spectroscopy (ESI-MS) and by comparison with literature data. The structures of these compounds were identified as nicotiflorin (1), apigetrin (2), chrysoeriol (3), apigenin (4), chrysin (5), daucosterol (6), β-sitosterol (7), taraxastrerol (8) and lupeol (9). The antibacterial and antioxidant activities of ethyl acetate and&amp;nbsp;n-butanol extracts have been evaluated. The antioxidant activity was assessed in&amp;nbsp;vitro using DPPH radical scavenging method, which showed that ethyl acetate extract possessed an interesting antioxidant potential (IC50 = 36.263 ± 0.005 μg/mL). &amp;nbsp;
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