<?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%">Rosmalena</style></author><author><style face="normal" font="default" size="100%">Putu Ayu Widyastuti</style></author><author><style face="normal" font="default" size="100%">Fatmawaty Yazid</style></author><author><style face="normal" font="default" size="100%">Neneng Siti Silfi Ambarwati</style></author><author><style face="normal" font="default" size="100%">Islamudin Ahmad</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Phytochemicals and Antioxidant Activities Evaluation of Origanum vulgare (L.) Stem Bark Extracts</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%">2</style></keyword><keyword><style  face="normal" font="default" size="100%">2-diphenyl-1-picrylhydrazyl</style></keyword><keyword><style  face="normal" font="default" size="100%">antioxidant activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Malondialdehyde</style></keyword><keyword><style  face="normal" font="default" size="100%">Origanum vulgare (L.)</style></keyword><keyword><style  face="normal" font="default" size="100%">Phytochemical</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%">July 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%">965-970</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;The present study aimed to evaluate phytochemical and antioxidant activity (&lt;em&gt;in vitro&lt;/em&gt; and &lt;em&gt;in vivo&lt;/em&gt;) of &lt;em&gt;Origanum vulgare &lt;/em&gt;(L.) ethanolic extract. The phytochemical test was assessed using the Clule method in ethanol, ethyl acetate, and hexane. &lt;em&gt;In vitro &lt;/em&gt;evaluation of antioxidant activity was determined by radical scavenging assay using DPPH (2,2-diphenyl-1-picrylhydrazyl) as an artificial free radical activity.&lt;em&gt; In vivo &lt;/em&gt;test was conducted to evaluate the effect of malondialdehyde (MDA) level in blood plasma during maximum physical activity treatment.&lt;em&gt; In vivo&lt;/em&gt; test was done using 25 male Sprague Dawley rats in pre and post-test control group design. The phytochemical test of &lt;em&gt;O. vulgare&lt;/em&gt; ethanol extract was showed some compounds, such as a flavonoid, alkaloid, triterpenoid/steroid, essential oil, and tannin, then in ethyl acetate and hexane. &lt;em&gt;In vitro &lt;/em&gt;assay showed that &lt;em&gt;O. vulgare&lt;/em&gt; extract has strong antioxidant activity with an IC&lt;sub&gt;50&lt;/sub&gt; value of 133.47 μg/mL. While in the &lt;em&gt;in vivo&lt;/em&gt; test, the most effective dosage is 20 mg/200 gr B.W., represented by a significant decrease of MDA level (0.509 nmol/mL) before and after treatment. So, the ethanolic extract of clove has potency as an herbal antioxidant because of the low level of IC&lt;sub&gt;50&lt;/sub&gt; and can decrease the MDA level.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><work-type><style face="normal" font="default" size="100%">Research Article</style></work-type><section><style face="normal" font="default" size="100%">965</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Rosmalena&lt;sup&gt;1&lt;/sup&gt;, Putu Ayu Widyastuti&lt;sup&gt;2&lt;/sup&gt;, Fatmawaty Yazid&lt;sup&gt;1&lt;/sup&gt;, Neneng Siti Silfi Ambarwati&lt;sup&gt;3,&lt;/sup&gt;*, Islamudin Ahmad&lt;sup&gt;4&lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Department of Medical Chemistry, Faculty of Medicine, Universitas Indonesia, South Jakarta, 10430 Jakarta, INDONESIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Medical Student, Faculty of Medicine, Universitas Indonesia, South Jakarta, 10430 Jakarta, INDONESIA&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Department of Cosmetology, Faculty of Engineering, Universitas Negeri Jakarta, East Jakarta, 13220 Jakarta, INDONESIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;4&lt;/sup&gt;Department of Pharmaceutical Sciences, Faculty of Pharmacy, Universitas Mulawarman, Samarinda, 75119 East Kalimantan, INDONESIA.&lt;/p&gt;
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