<?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%">Sendangratri</style></author><author><style face="normal" font="default" size="100%">Rosita Handayani</style></author><author><style face="normal" font="default" size="100%">Berna Elya</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Inhibitory Effects of Different Varieties of Sweet Potato (Ipomoea batatas L.) Tubers Extracts on Lipoxygenase Activity</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%">Anti-inflammatory</style></keyword><keyword><style  face="normal" font="default" size="100%">Ipomoea batatas L</style></keyword><keyword><style  face="normal" font="default" size="100%">Lipoxygenase</style></keyword><keyword><style  face="normal" font="default" size="100%">Sweet potato tubers</style></keyword><keyword><style  face="normal" font="default" size="100%">Total flavonoid contents</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2019</style></year><pub-dates><date><style  face="normal" font="default" size="100%">October 2019</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">11</style></volume><pages><style face="normal" font="default" size="100%">1195-1198</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;Sweet potatoes (&lt;em&gt;Ipomoea batatas&lt;/em&gt; L.) with purple, orange and white varieties can be differentiated by their skin and flesh tubers’ colors. Research on anti-inflammatory activity of this plant is still limited although has been used traditionally. &lt;strong&gt;Objective:&lt;/strong&gt; This study aimed to determine IC&lt;sub&gt;50 &lt;/sub&gt;value of sweet potato tubers extracts in inhibiting lipoxygenase activity. &lt;strong&gt;Methods:&lt;/strong&gt; Dried tubers of sweet potato were macerated with ethanol 70%. Each extracts were tested for soybean lipoxygenase inhibitory activity, phytochemical screening and total flavonoid contents. IC&lt;sub&gt;50&lt;/sub&gt; value and total flavonoid contents obtained from each extracts were analyzed statistically. &lt;strong&gt;Results: &lt;/strong&gt;IC&lt;sub&gt;50 &lt;/sub&gt;value of purple, orange and white sweet potato tubers extracts are 46.09, 52.12 and 63.69 μg/mL respectively. Each extracts contain alkaloids, flavonoids, saponins, tannins and glycosides. Total flavonoid contents in purple, orange and white sweet potato extracts are 8.45±0.41; 7.57±0.03; and 6.12±0.14 mgQE/g extract respectively. &lt;strong&gt;Conclusion: &lt;/strong&gt;Total flavonoid contents and IC&lt;sub&gt;50&lt;/sub&gt; values of each extracts are strongly correlated and inversely proportional with significance value of 0.026 and correlation value of -0.999 which indicate that the higher total flavonoid contents, the stronger inhibitory activity.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">6</style></issue><work-type><style face="normal" font="default" size="100%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">1195</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Sendangratri&lt;sup&gt;1&lt;/sup&gt;, Rosita Handayani&lt;sup&gt;1&lt;/sup&gt;, Berna Elya&lt;sup&gt;1&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 Pharmacognosy- Phytochemistry, Faculty of Pharmacy, Universitas Indonesia, Depok, West Java, INDONESIA.&lt;/p&gt;
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