<?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%">Herman</style></author><author><style face="normal" font="default" size="100%">Arsyik Ibrahim</style></author><author><style face="normal" font="default" size="100%">Bakti Puji Rahayu</style></author><author><style face="normal" font="default" size="100%">M Arifuddin</style></author><author><style face="normal" font="default" size="100%">Yuspian Nur</style></author><author><style face="normal" font="default" size="100%">Wisnu Cahyo Prabowo</style></author><author><style face="normal" font="default" size="100%">Maryono</style></author><author><style face="normal" font="default" size="100%">Neneng Siti Silfi Ambarwati</style></author><author><style face="normal" font="default" size="100%">Laode Rijai</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%">Single Factor Effect of Natural Deep Eutectic Solvent Citric Acid-Glucose Based Microwave-Assisted Extraction on Total Polyphenols Content from Mitragyna speciosa Korth. Havil Leaves</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%">Citric acid-glucose</style></keyword><keyword><style  face="normal" font="default" size="100%">Microwave-assisted extraction</style></keyword><keyword><style  face="normal" font="default" size="100%">Mitragyna speciosa (Korth.) Havil</style></keyword><keyword><style  face="normal" font="default" size="100%">Natural deep eutectic solvent</style></keyword><keyword><style  face="normal" font="default" size="100%">Total polyphenols content</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%">1109-1115</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;Applying green chemistry principles in the exploration of an active secondary metabolite from natural products has continued to experience a significant increase in the last decade, mainly natural deep eutectic solvent (NADES) usage. &lt;em&gt;Mitragyna speciosa &lt;/em&gt;(Korth.) Havil (&lt;em&gt;Rubiaceae&lt;/em&gt; family) is a native of East Kalimantan, which is traditionally used as an herb to treat headaches and inflammation by drinking boiled water a few leaves. On the other hand, this plant has an addictive effect. This study aims to determine the single factor effect of NADES citric acid–glucose-based microwave-assisted extraction (MAE) to obtain the yield of total polyphenols content (TPC) from &lt;em&gt;M. speciosa&lt;/em&gt; leaves. Dried powder of &lt;em&gt;M. speciosa&lt;/em&gt; leaves was extracted using NADES citric acid-glucose based MAE method with some different conditions such as NADES (citric acid-glucose) ratio (4:1, 5:1, 6:1 g/g), solid-liquid ratio (10:1, 15:1, 20:1 mL/g), microwave power (90, 270, 450 Watts), and extraction time (15, 20, 25 min). The determination of TPC was performed using Folin-Ciocalteau reagent and gallic acid as a standard with different concentration levels. The absorbance measured using spectrophotometer UV-VIS at 746 nm to obtain a regression formula of Y = 0.0022X–0.00095, where R&lt;sup&gt;2&lt;/sup&gt; = 0.9977. Based on the result, the best of single factor condition effect was obtained the TPC value including NADES ratio of 248.69 mg GAE/g sample (5:1 g/g citric acid-glucose), a solid-liquid ratio of 146.93 mg GAE/g sample (15:1 mL/g solvent-sample), microwave power of 192.20 mg GAE/g sample (270 Watts), and extraction time of 358.59 mg GAE/g sample (15 min). The single factor effect of NADES citric acid-glucose-based MAE shows a difference in TPC value based on various conditions of this method.&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%">1109</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Herman&lt;sup&gt;1,2&lt;/sup&gt;, Arsyik Ibrahim&lt;sup&gt;2&lt;/sup&gt;, Bakti Puji Rahayu&lt;sup&gt;2&lt;/sup&gt;, M Arifuddin&lt;sup&gt;1&lt;/sup&gt;, Yuspian Nur&lt;sup&gt;1&lt;/sup&gt;, Wisnu Cahyo Prabowo&lt;sup&gt;1&lt;/sup&gt;, Maryono&lt;sup&gt;3&lt;/sup&gt;, Neneng Siti Silfi Ambarwati&lt;sup&gt;4&lt;/sup&gt;, Laode Rijai&lt;sup&gt;1&lt;/sup&gt;, Islamudin Ahmad&lt;sup&gt;1,2,&lt;/sup&gt;*&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Laboratory of Pharmaceutical Research and Development of TROPICAL PHARMACA, Faculty of Pharmacy, Universitas Mulawarman, Samarinda, 75119 East Kalimantan, INDONESIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Department of Pharmaceutical Sciences, Faculty of Pharmacy, Universitas Mulawarman, Samarinda, 75119 East Kalimantan, INDONESIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Makassar, Makassar, 90222 South Sulawesi, INDONESIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;4&lt;/sup&gt;Department of Cosmetology, Faculty of Engineering, Universitas Negeri Jakarta, East Jakarta, 13220 DKI Jakarta, INDONESIA.&lt;/p&gt;
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