<?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%">MA Alfaro Jiménez</style></author><author><style face="normal" font="default" size="100%">A Zugasti Cruz</style></author><author><style face="normal" font="default" size="100%">SY Silva Belmares</style></author><author><style face="normal" font="default" size="100%">JA Ascacio Valdés</style></author><author><style face="normal" font="default" size="100%">CA Sierra Rivera</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Phytochemical and Biological Characterization of Aqueous and Ethanolic Extracts of Parthenium hysterophorus</style></title><secondary-title><style face="normal" font="default" size="100%">Pharmacognosy Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">antioxidant activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Cytotoxicity</style></keyword><keyword><style  face="normal" font="default" size="100%">Parthenium hysterophorus</style></keyword><keyword><style  face="normal" font="default" size="100%">Phytochemicals</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">September 2021</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">1122-1133</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Introduction:&lt;/strong&gt; &lt;em&gt;Parthenium hysterophorus &lt;/em&gt;is a plant used in traditional medicine to treat health issues and which could be a source of phytochemicals with possible antioxidant activity without causing cytotoxic effects. Hence, this work was designed to evaluate its phytochemical profile, cytotoxicity, and antioxidant activity. &lt;strong&gt;Methods: &lt;/strong&gt;The aqueous (AE) and ethanolic (EE) extracts of &lt;em&gt;P. hysterophorus &lt;/em&gt;flowers were obtained by decoction and ultrasound, respectively. Their phytochemical composition was determined by colorimetric tests and RP-HPLC-MS analysis. Their cytotoxic activity was tested by a hemolysis assay. The antioxidant activity was evaluated with the Trolox equivalent antioxidant capacity (TEAC), 2,2-diphenyl-1- picrylhydrazyl (DPPH), and hydroxyl radical (-OH) scavenging assays. In addition, the effect of the extracts on the activity of the antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) from human erythrocytes, was evaluated. &lt;strong&gt;Results: &lt;/strong&gt;The phytochemical screening of the AE and EE by colorimetric test showed the presence of flavonoids, steroids, triterpenes, saponins, coumarins, sesquiterpene lactones, tannins, and carbohydrates. In addition, the RP-HPLC-MS analysis identified some phenolic compounds such as flavonols, methoxyflavonols, flavones, methoxyflavones, and hydroxycinnamic acids. The hemolysis assay showed non-cytotoxic activity by AE, but EE exhibited a hemolytic effect. Furthermore, the AE and EE showed significant antioxidant activity to inhibit radicals in the TEAC, DPPH and -OH scavenging assays. Moreover, the SOD activity only showed a significant increase by AE. However, the two crude extracts increased the CAT activity, at the highest concentrations.&lt;strong&gt; Conclusion:&lt;/strong&gt; &lt;em&gt;P. hysterophorus &lt;/em&gt;has phytochemicals with antioxidant activity to inhibit radicals and increase the activity of antioxidant enzymes &lt;em&gt;in vitro.&lt;/em&gt;&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">5</style></issue><work-type><style face="normal" font="default" size="100%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">1122</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;MA Alfaro Jiménez&lt;sup&gt;1&lt;/sup&gt;, A Zugasti Cruz&lt;sup&gt;2&lt;/sup&gt;, SY Silva Belmares&lt;sup&gt;3&lt;/sup&gt;, JA Ascacio Valdés&lt;sup&gt;4&lt;/sup&gt;, CA Sierra Rivera&lt;sup&gt;5,&lt;/sup&gt;*&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Master program of Food Science and Technology, Faculty of Chemistry, Autonomous University of Coahuila, Saltillo, MEXICO.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Laboratory of Immunology and Toxicology, Food Research Department, Faculty of Chemistry, Autonomous University of Coahuila, Saltillo, MEXICO.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Food Research Department, Faculty of Chemistry, Autonomous University of Coahuila, Saltillo, MEXICO.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;4&lt;/sup&gt;Bioprocess and Bioproducts Group, Food Research Department, Faculty of Chemistry, Autonomous University of Coahuila, Saltillo, MEXICO.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;5&lt;/sup&gt;Laboratory of Immunology and Toxicology, Food Research Department, Faculty of Chemistry, Autonomous University of Coahuila, Saltillo, MEXICO.&lt;/p&gt;
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