<?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%">Apinya Rachkeeree</style></author><author><style face="normal" font="default" size="100%">Kuttiga Kantadoung</style></author><author><style face="normal" font="default" size="100%">Ratchadawan Puangpradub</style></author><author><style face="normal" font="default" size="100%">Ratchuporn Suksathan</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Phytochemicals, Antioxidants and Anti-tyrosinase Analyses of Selected Ginger Plants</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%">ABTS assay</style></keyword><keyword><style  face="normal" font="default" size="100%">Anti-tyrosinase</style></keyword><keyword><style  face="normal" font="default" size="100%">DPPH assay</style></keyword><keyword><style  face="normal" font="default" size="100%">Phenolic content</style></keyword><keyword><style  face="normal" font="default" size="100%">Phytochemicals</style></keyword><keyword><style  face="normal" font="default" size="100%">Zingiberaceae</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%">June 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%">872-883</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;Some of Zingeberaceae are not widely used for medicine of food, although in Thailand have been used them for many reasons about health or the diet. This study evalued the phytochemicals and anti-tyrosinase activities of 16 plant species of &lt;em&gt;Alpinia, Amomum, Curcuma, Etlingera&lt;/em&gt; and &lt;em&gt;Kaemferia &lt;/em&gt;(Zingiberaceae). &lt;strong&gt;Methods:&lt;/strong&gt; The extractions of dried powdered rhizomes were performed using n-hexane, ethylacetate and ethanol. Percentage extract yield of the samples varied among species and solvent extracts. Chemical groups (alkaloids, flavonoids, tannins, polyphenols, steroids and terpenoids) were identified using phytochemical screening. The total phenolic contents (TPC) were analyzed using the Folin-Ciocalteu’s reagent, while antioxidant activities were detected using 2,2-diphenyl-1- picrylhydrazyl (DPPH) and the 2,2’-azino-bis (3-ethylbenzothizoline-6-sulphonic acid) (ABTS.+). The anti-tyrosinase was expressed to the half maximal inhibitory concentration (IC&lt;sub&gt;50&lt;/sub&gt;) value (mg/mL). &lt;strong&gt;Results:&lt;/strong&gt; The ethyl acetate extract of &lt;em&gt;Amomum &lt;/em&gt;showed the highest value of TPC. The strongest antioxidant activity were found in &lt;em&gt;Amomum&lt;/em&gt; and &lt;em&gt;Kaemferia&lt;/em&gt; extracts, while ethyl acetate and ethanol extracts of all samples have a better antioxidant properties than the n-hexane extracts. On the other hand, the n-hexane extracts have the highest anti-tyrosinase potential in all samples and of these, &lt;em&gt;Curcuma&lt;/em&gt; extracts were the best group. &lt;strong&gt;Conclusion: &lt;/strong&gt;Our research indicated that plants of the Zingiberaceae would be new sources of antioxidants and anti-tyrosinase for further natural product developments in cosmetics, food or nutraceuticals.&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%">872</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Apinya Rachkeeree, Kuttiga Kantadoung, Ratchadawan Puangpradub, Ratchuporn Suksathan*&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;Queen Sirikit Botanic Garden, The Botanical Garden Organization, P.O. Box 7 Mae Rim, Chiang Mai, THAILAND.&lt;/p&gt;
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