<?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%">Fania El Ridhasya</style></author><author><style face="normal" font="default" size="100%">Novia Rahim</style></author><author><style face="normal" font="default" size="100%">Muhammad Almurdani</style></author><author><style face="normal" font="default" size="100%">Rudi Hendra</style></author><author><style face="normal" font="default" size="100%">Hilwan Yuda Teruna</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Antidiabetic Constituents from Helminthostachys zeylanica (L) Hook (Ophioglossaceae)</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%">Antidiabetic</style></keyword><keyword><style  face="normal" font="default" size="100%">Helminthostacys zeylanica</style></keyword><keyword><style  face="normal" font="default" size="100%">Ophioglossaceae</style></keyword><keyword><style  face="normal" font="default" size="100%">α-glucosidase</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2020</style></year><pub-dates><date><style  face="normal" font="default" size="100%">March 2020</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">12</style></volume><pages><style face="normal" font="default" size="100%">223-226</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;Background:&lt;/strong&gt; The roots of tunjuk langit (&lt;em&gt;Helminthostacshys zeylanica&lt;/em&gt;) have been used traditionally in some villages in Indonesia, particularly in Riau Province. &lt;strong&gt;Objective:&lt;/strong&gt; In this study we reported two flavonoids and their antidiabetic activity. &lt;strong&gt;Material and methods: &lt;/strong&gt;Isolation of the metabolites was based on polarity fractionation method. Purification processes were conducted by vacuum liquid chromatography (VLC). Chemical structures were elucidated based on spectroscopy characteristics, including FTIR and 1D/2D NMR. &lt;strong&gt;Results: &lt;/strong&gt;The isolated compounds were identified as ugonin J and K. The antidiabetic activity was measured by &lt;em&gt;α&lt;/em&gt;-glucosidase inhibitor assay. The antidiabetic activity of ugonin J was found at IC&lt;sub&gt;50&lt;/sub&gt; 273,13±0,402 ppm and Ugonin K was found at IC&lt;sub&gt;50 &lt;/sub&gt;138,21±0,263 ppm (moderately active). &lt;strong&gt;Conclusion: &lt;/strong&gt;Therefore this plant can be used traditionally as antidiabetic medicine.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><work-type><style face="normal" font="default" size="100%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">223</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Fania El Ridhasya, Novia Rahim, Muhammad Almurdani, Rudi Hendra, Hilwan Yuda Teruna* &lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Riau, Pekanbaru 28293, INDONESIA.&lt;/p&gt;
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