<?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%">Mukti R Paudel</style></author><author><style face="normal" font="default" size="100%">Mukesh B Chand</style></author><author><style face="normal" font="default" size="100%">Basant Pant</style></author><author><style face="normal" font="default" size="100%">Bijaya Pant</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cytotoxic Activity of Antioxidant-Riched Dendrobium longicornu</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%">Dendrobium longicornu</style></keyword><keyword><style  face="normal" font="default" size="100%">DPPH</style></keyword><keyword><style  face="normal" font="default" size="100%">Flavonoid</style></keyword><keyword><style  face="normal" font="default" size="100%">MTT</style></keyword><keyword><style  face="normal" font="default" size="100%">Polyphenol</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">May 2017</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">/files/PJ-9-4/10.5530pj.2017.4.81</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">9</style></volume><pages><style face="normal" font="default" size="100%">499-503</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;&lt;strong&gt;Context:&lt;/strong&gt; &lt;em&gt;Dendrobium longicornu &lt;/em&gt;is a traditional medicinal plant widely used in Asia. It has many bioactive compounds like bibenzyl, phenanthrenes, phenolic compounds. There has been little research in the cytotoxic and antioxidant effects of &lt;em&gt;D. longicornu.&lt;/em&gt; &lt;strong&gt;Aims:&lt;/strong&gt; The aim of this study was to investigate the cytotoxic and antioxidant activities of this plant. &lt;strong&gt;Settings and Design:&lt;/strong&gt; Antioxidant and cytotoxic activity of &lt;em&gt;Dendrobium longicornu&lt;/em&gt; extracts. &lt;strong&gt;Methods and Material:&lt;/strong&gt; The plant extracts were prepared by soxhlet&amp;rsquo;s extractor in organic solvents, acetone and ethanol. The total polyphenol content (TPC) in the extracts was determined spectrophotometrically by the Folin-Ciocalteu method and the total flavonoid content (TFC) by aluminium chloride method. The antioxidant activity was determined using DPPH (2,2-diphenyl-1-picrylhydrazyl) method. The cytotoxic activity was evaluated against human brain tumor cells (U251) and cervical cancer cells (HeLa) using MTT assay. &lt;strong&gt;Statistical analysis used:&lt;/strong&gt; Regression analysis was done for calculation of IC&lt;sub&gt;50&lt;/sub&gt;. Duncan multiple range test and Dunnett test were done to compare the data. &lt;strong&gt;Results:&lt;/strong&gt; The &lt;em&gt;Dendrobium longicornu &lt;/em&gt;acetonic extract (DLA) showed significantly highest TPC and TFC than &lt;em&gt;Dendrobium longicornu&lt;/em&gt; ethanolic extract (DLE). The antioxidant activity was also significantly higher in DLA followed by DLE. Highest cytotoxicity (i.e., lowest IC&lt;sub&gt;50&lt;/sub&gt; value) was found for the DLA on U251 cells and DLE on HeLa cells. &lt;strong&gt;Conclusions:&lt;/strong&gt; This result concluded that &lt;em&gt;D. longicornu&lt;/em&gt; is a potential source of antioxidant and cytotoxic agents.&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%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">499</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;strong&gt;Mukti R Paudel&lt;sup&gt;1&lt;/sup&gt;, Mukesh B Chand&lt;sup&gt;1&lt;/sup&gt;, Basant Pant&lt;sup&gt;2&lt;/sup&gt;, Bijaya Pant&lt;sup&gt;1 &lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Central Department of Botany, Tribhuvan University, Kirtipur, Kathmandu, NEPAL&lt;/p&gt;
&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Annapurna Research Center, Maitighar, Kathmandu, NEPAL.&lt;/p&gt;</style></auth-address></record></records></xml>