Volatile Chemical Profiles of Two Lamiaceae Species: Origanum acutidens (Ronniger) Jalas and Thymus eriocalyx (Hand.-Mazz.) Ietsw

Conference paper > Summary Text · 2026

Authors: Ceren EMİR

Quality of Herbal Products: Analysis, Efficacy, Safety & Regulatory Aspects, Türkiye, İstanbul, International, Poster, Summary Text, 2026-2026, pp 1-2

Summary

<p>Volatile&nbsp;chemical&nbsp;profiles&nbsp;of&nbsp;two&nbsp;Lamiaceae&nbsp;species:&nbsp;Origanum&nbsp;acutidens&nbsp;(Ronniger)&nbsp;Jalas&nbsp;and&nbsp;Thymus&nbsp;eriocalyx&nbsp;(Hand.-Mazz.)&nbsp;Ietsw</p><p>Ceren&nbsp;Emir¹*,&nbsp;Ahmet&nbsp;Emir¹,&nbsp;Hasan&nbsp;Yıldırım²</p><p>¹&nbsp;Department&nbsp;of&nbsp;Pharmacognosy,&nbsp;Faculty&nbsp;of&nbsp;Pharmacy,&nbsp;Ege&nbsp;University,&nbsp;Bornova,&nbsp;Izmir,&nbsp;Türkiye</p><p>²&nbsp;Department&nbsp;of&nbsp;Biology,&nbsp;Botany&nbsp;Section,&nbsp;Faculty&nbsp;of&nbsp;Science,&nbsp;Ege&nbsp;University,&nbsp;Bornova,&nbsp;Izmir,&nbsp;Türkiye</p><p>Objective:&nbsp;Species&nbsp;of&nbsp;the&nbsp;genera&nbsp;Thymus&nbsp;L.&nbsp;and&nbsp;Origanum&nbsp;L.&nbsp;(Lamiaceae)&nbsp;are&nbsp;studied&nbsp;for&nbsp;their&nbsp;essential&nbsp;oil&nbsp;compositions&nbsp;(Ramos&nbsp;da&nbsp;Silva&nbsp;et&nbsp;al.,&nbsp;2021).&nbsp;This&nbsp;study&nbsp;aimed&nbsp;to&nbsp;compare&nbsp;the&nbsp;volatile&nbsp;chemical&nbsp;profiles&nbsp;of&nbsp;Thymus&nbsp;eriocalyx&nbsp;and&nbsp;Origanum&nbsp;acutidens&nbsp;collected&nbsp;from&nbsp;Eastern&nbsp;Anatolia,&nbsp;Türkiye.</p><p>Methods:&nbsp;Both&nbsp;species&nbsp;were&nbsp;collected&nbsp;from&nbsp;Hizan,&nbsp;Bitlis,&nbsp;Türkiye.&nbsp;Their&nbsp;essential&nbsp;oils&nbsp;were&nbsp;obtained&nbsp;by&nbsp;hydrodistillation&nbsp;and&nbsp;analyzed&nbsp;using&nbsp;gas&nbsp;chromatography–mass&nbsp;spectrometry&nbsp;(GC–MS)&nbsp;to&nbsp;identify&nbsp;constituents&nbsp;and&nbsp;determine&nbsp;relative&nbsp;abundances&nbsp;(Adams,&nbsp;2010).</p><p>Results:&nbsp;A&nbsp;total&nbsp;of&nbsp;27&nbsp;compounds&nbsp;were&nbsp;identified&nbsp;in&nbsp;the&nbsp;essential&nbsp;oil&nbsp;of&nbsp;T.&nbsp;eriocalyx,&nbsp;with&nbsp;thymol&nbsp;(30.54%)&nbsp;and&nbsp;carvacrol&nbsp;(27.89%)&nbsp;present&nbsp;at&nbsp;comparable&nbsp;relative&nbsp;abundances.&nbsp;Other&nbsp;major&nbsp;constituents&nbsp;included&nbsp;o-cymene&nbsp;(11.05%),&nbsp;caryophyllene&nbsp;(6.01%),&nbsp;and&nbsp;1,8-cineole&nbsp;(3.24%).&nbsp;In&nbsp;contrast,&nbsp;28&nbsp;compounds&nbsp;were&nbsp;identified&nbsp;in&nbsp;O.&nbsp;acutidens&nbsp;essential&nbsp;oil,&nbsp;predominantly&nbsp;carvacrol&nbsp;(72.08%),&nbsp;followed&nbsp;by&nbsp;o-cymene&nbsp;(8.63%)&nbsp;and&nbsp;caryophyllene&nbsp;(2.89%).&nbsp;Thymol&nbsp;accounted&nbsp;for&nbsp;only&nbsp;0.34%&nbsp;of&nbsp;O.&nbsp;acutidens&nbsp;essential&nbsp;oil,&nbsp;indicating&nbsp;a&nbsp;marked&nbsp;difference&nbsp;in&nbsp;the&nbsp;relative&nbsp;abundances&nbsp;of&nbsp;thymol&nbsp;and&nbsp;carvacrol&nbsp;between&nbsp;the&nbsp;species.</p><p>Conclusion:&nbsp;The&nbsp;two&nbsp;species&nbsp;exhibited&nbsp;distinct&nbsp;essential&nbsp;oil&nbsp;profiles.&nbsp;T.&nbsp;eriocalyx&nbsp;contained&nbsp;comparable&nbsp;proportions&nbsp;of&nbsp;thymol&nbsp;and&nbsp;carvacrol,&nbsp;whereas&nbsp;O.&nbsp;acutidens&nbsp;showed&nbsp;pronounced&nbsp;carvacrol&nbsp;dominance.&nbsp;These&nbsp;findings&nbsp;contribute&nbsp;to&nbsp;their&nbsp;phytochemical&nbsp;characterization&nbsp;and&nbsp;provide&nbsp;a&nbsp;basis&nbsp;for&nbsp;further&nbsp;research.</p><p>Keywords:&nbsp;Thymus&nbsp;eriocalyx,&nbsp;Origanum&nbsp;acutidens,&nbsp;essential&nbsp;oil,&nbsp;GC–MS,&nbsp;carvacrol.</p><p>References:</p><p>Adams,&nbsp;R.&nbsp;P.,&nbsp;&amp;&nbsp;Dev,&nbsp;V.&nbsp;(2010).&nbsp;Synthesis&nbsp;and&nbsp;GC–MS&nbsp;analysis&nbsp;of&nbsp;angelates&nbsp;and&nbsp;tiglates&nbsp;as&nbsp;an&nbsp;aid&nbsp;to&nbsp;identification&nbsp;of&nbsp;these&nbsp;components&nbsp;in&nbsp;essential&nbsp;oils.&nbsp;Flavour&nbsp;and&nbsp;Fragrance&nbsp;Journal,&nbsp;25,&nbsp;71–74.</p><p>Ramos&nbsp;da&nbsp;Silva,&nbsp;L.&nbsp;R.,&nbsp;Ferreira,&nbsp;O.&nbsp;O.,&nbsp;Cruz,&nbsp;J.&nbsp;N.,&nbsp;Franco,&nbsp;C.&nbsp;de&nbsp;J.&nbsp;P.,&nbsp;dos&nbsp;Anjos,&nbsp;T.&nbsp;O.,&nbsp;Cascaes,&nbsp;M.&nbsp;M.,&nbsp;da&nbsp;Costa,&nbsp;W.&nbsp;A.,&nbsp;Andrade,&nbsp;E.&nbsp;H.&nbsp;de&nbsp;A.,&nbsp;&amp;&nbsp;de&nbsp;Oliveira,&nbsp;M.&nbsp;S.&nbsp;(2021).&nbsp;Lamiaceae&nbsp;essential&nbsp;oils,&nbsp;phytochemical&nbsp;profile,&nbsp;antioxidant,&nbsp;and&nbsp;biological&nbsp;activities.&nbsp;Evidence-Based&nbsp;Complementary&nbsp;and&nbsp;Alternative&nbsp;Medicine,&nbsp;2021,&nbsp;Article&nbsp;6748052.</p>

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