<?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%">Paul Alan Arkin Alvarado-García</style></author><author><style face="normal" font="default" size="100%">Marilú Roxana Soto-Vásquez</style></author><author><style face="normal" font="default" size="100%">Elda Maritza Rodrigo-Villanueva</style></author><author><style face="normal" font="default" size="100%">José Gilberto Gavidia-Valencia</style></author><author><style face="normal" font="default" size="100%">Natalia Mavila Guzmán Rodríguez</style></author><author><style face="normal" font="default" size="100%">Roger Antonio Rengifo-Penadillos</style></author><author><style face="normal" font="default" size="100%">Julio Víctor Campos-Florián</style></author><author><style face="normal" font="default" size="100%">Yolanda Elizabeth Rodríguez de Guzmán</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Chamomile (Matricaria chamomilla L.) Essential Oil and its Potential Against Stress, Anxiety, and Sleep Quality</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%">Anxiety</style></keyword><keyword><style  face="normal" font="default" size="100%">Essential oils</style></keyword><keyword><style  face="normal" font="default" size="100%">Matricaria chamomilla</style></keyword><keyword><style  face="normal" font="default" size="100%">Sleep quality</style></keyword><keyword><style  face="normal" font="default" size="100%">stress</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%">February 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%">100-107</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;Introduction: &lt;/strong&gt;This investigation aimed to evaluate the effect of Matricaria chamomilla L essential oil on stress, anxiety, and sleep quality. &lt;strong&gt;Methods:&lt;/strong&gt; The essential oils were extracted by hydrodistillation using a modified Clevenger-type apparatus, and the chemical composition was performed by Gas chromatographymass spectrometry (GC–MS). Furthermore, a study was conducted where 128 participants were divided into two groups: a control group and an experimental group treated with essential oils. Stress, anxiety, and sleep quality were evaluated using the Perceived Stress Scale (PSS–10), the Zung Self-Rating Anxiety Scale (SAS), and the Pittsburgh Sleep Quality Inventory (PSQI). In addition, cortisol was measured.&lt;strong&gt; Results:&lt;/strong&gt; Chemical analysis showed thatα-Bisabolol oxide A exhibited the highest concentration at 30.42%, followed by α -Bisabolol (10.94%), α-Bisabolone oxide A (9.82%), and spathulenol (8.83%). Stress, anxiety, sleep quality, and cortisol scores decreased in the post-test study phase compared to the pre-test in the experimental group (p&amp;lt;0.05). Important effect size was found in the case of anxiety (d = 1.203; Δ = 1.246), while medium effects were observed for stress (d = 0.701; Δ = 0.633) and sleep quality (d = 0.888; Δ = 0.732), while cortisol showed small changes (d=0.374; Δ=0.357). &lt;strong&gt;Conclusion:&lt;/strong&gt; The study showed the potential of Chamomile essential oils to reduce stress and anxiety levels and improve sleep quality.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue><work-type><style face="normal" font="default" size="100%">Research Article</style></work-type><section><style face="normal" font="default" size="100%">100</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Paul Alan Arkin Alvarado- García&lt;sup&gt;1,&lt;/sup&gt;*, Marilú Roxana Soto-Vásquez&lt;sup&gt;2&lt;/sup&gt;, Elda Maritza Rodrigo-Villanueva&lt;sup&gt;2&lt;/sup&gt;, José Gilberto Gavidia-Valencia&lt;sup&gt;2&lt;/sup&gt;, Natalia Mavila Guzmán Rodríguez&lt;sup&gt;3&lt;/sup&gt;, Roger Antonio Rengifo-Penadillos&lt;sup&gt;2&lt;/sup&gt;, Julio Víctor Campos-Florián&lt;sup&gt;2&lt;/sup&gt; , Yolanda Elizabeth Rodríguez de Guzmán&lt;sup&gt;4&lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Escuela de Medicina. Universidad César Vallejo, Trujillo, PERÚ.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Facultad de Farmacia y Bioquímica. Universidad Nacional de Trujillo, Trujillo, PERÚ.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Escuela de Psicología. Universidad César Vallejo, Trujillo, PERÚ.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;4&lt;/sup&gt;Facultad de Enfermería. Universidad Nacional de Trujillo, Trujillo, Perú.&lt;/p&gt;
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