<?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%">Issara Chummalee</style></author><author><style face="normal" font="default" size="100%">Methin Phadungkit</style></author><author><style face="normal" font="default" size="100%">Pornpun Laovachirasuwan</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Assessment of Anti-tyrosinase, Antioxidant and Cytotoxic Activities of Trigonostemon reidioides Extracts on Mouse Fibroblast (L929) Cells</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%">Antityrosinase activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Cytotoxicity activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Trigonostemon reidioides (Kurz) Craib</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2024</style></year><pub-dates><date><style  face="normal" font="default" size="100%">April 2024</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">16</style></volume><pages><style face="normal" font="default" size="100%">302-306</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;Trigonostemon reidioides (Kurz) Craib is a plant traditionally used for its whitening properties, although previous studies have reported some adverse effects associated with its use. &lt;strong&gt;Objectives:&lt;/strong&gt; The objective of this study were to investigate the antityrosinase activity, antioxidant activity, and toxicity on Mouse Fibroblast (L929) Cells of the T. reidioides extracts. The antityrosinase activity was determined using the dopachrome method, while the antioxidant activity was evaluated using the DPPH method. The cytotoxicity was assessed using the MTT assay. &lt;strong&gt;Results:&lt;/strong&gt; The results revealed that the ethanol extract exhibited strong antityrosinase activity, with an IC50 value of 5.38 μg/ml. Furthermore, Fraction 3 and Fraction 4, which were further separated from the ethanol extract, demonstrated high antioxidant activity, with IC50 values ranging from 1.65 to 2.10 μg/ml. The hexane extract, as well as Fraction 4 and Fraction 5, exhibited low toxicity, with IC50 values ranging from 11.82 to 40.12 μg/ml. &lt;strong&gt;Conclusions: &lt;/strong&gt;These findings indicate that Fraction 4 and Fraction 5 of T. reidioides possess potent antityrosinase and antioxidant activities, while displaying low cytotoxicity against the mouse fibroblast (L929) cell line. Therefore, Fraction 4 and Fraction 5 hold considerable potential for further development as skin whitening agents derived from T. reidioides extracts.&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%">302</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p&gt;&lt;strong&gt;Issara Chummalee, Methin Phadungkit, Pornpun Laovachirasuwan*&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Mahasarakham Univeristy, Maha Sarakham, THAILAND.&lt;/p&gt;
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