@article {2422, title = {Exploring the Calming Potential of Peppermint: Anxiolytic Effects of Mentha piperita Essential Oil on State and Trait Anxiety}, journal = {Pharmacognosy Journal}, volume = {16}, year = {2024}, month = {December 2024}, pages = {1290-1296}, type = {Original Article}, chapter = {1290}, abstract = {

Introduction: This study aimed to evaluate the anxiolytic effect of Mentha piperita essential oil on state and trait anxiety. Methods: The essential oil was extracted by hydrodistillation, and its chemical composition was analyzed using Gas Chromatography-Mass Spectrometry (GC-MS). A total of 93 participants were divided into a control group (CG) and an experimental group (EG), with 47 participants in the EG receiving MPEO aromatherapy and 46 in the CG. Anxiety levels were measured using the State-Trait Anxiety Inventory (STAI) at pretest and posttest phases. Results: GC-MS analysis showed that menthol had the highest concentration (42.56\%), followed by menthone (19.24\%) and linalool (11.68\%). Mixed model analysis revealed that group assignment (EG vs. CG) was a significant predictor of posttest state anxiety (F=16.508, p=0.001) and trait anxiety (F=9.091, p=0.003), independent of pretest scores, supporting the intervention{\textquoteright}s effect on reducing anxiety. Posttest results showed a significant reduction in state anxiety in the EG compared to the CG (p=0.001) with a large effect size (r=0.508), while trait anxiety showed a moderate reduction (p=0.001, r=0.342). Conclusion: These findings suggest that Mentha piperita essential oil may effectively reduce state and trait anxiety, with a more pronounced impact on state anxiety.

}, keywords = {Anxiety, Essential oil, Mentha piperita, State anxiety, Trait anxiety}, doi = {10.5530/pj.2024.16.208}, author = {Paul Alan Arkin Alvarado-Garc{\'\i}a and Maril{\'u} Roxana Soto-V{\'a}squez and Taniht Lisseth Cubas Romero and Santiago M. Benites and Anthony Derlis Auris-L{\'o}pez and Gerardo Manuel Del Pino-Aliaga} } @article {2057, title = {Effects of Melissa officinalis essential oil on state and trait anxiety}, journal = {Pharmacognosy Journal}, volume = {15}, year = {2023}, month = {June 2023}, pages = {454-460}, type = {Research Article}, chapter = {454}, abstract = {

Introduction: Essential oils are complex substances used extensively in aromatherapy and phytotherapy, some of them as anxiety and stress-relieving agents. In order to evaluate the effects of Melissa officinalis essential oil on state and trait anxiety, this study was conducted. Methods: The essential oil was extracted by steam distillation and the chemical composition was investigated by Gas chromatographymass spectrometry (GC{\textendash}MS). In addition, a Quasi experimental study with measures at pretest-posttest was conducted, where 58 participants were divided into two groups, a waiting-list (WL) control group, and an experimental group (EG)treated with aromatherapy based on Melissa officinalis essential oil. The anxiety index was evaluated by State-Trait Anxiety Inventory (STAI). Measures were taken at two times: pretest and posttest. Results: The chemical analysis showed that β-cubebene (26.3\%), β-caryophyllene (25.4\%) and geranial (12.5\%) were de main components. Both state and trait anxiety levels decreased in the experimental group during the posttest phase; however, only state anxiety demonstrated statistically significant differences (p\<0.05). A moderate size effect was found for state anxiety (d = 0.799; g= 0.797) with 1-β=0.803; but none for trait anxiety. Conclusion: Melissa officinalis essential oil was moderately effective on state anxiety but has no effect on trait anxiety.

}, keywords = {Essential oil, Melissa officinalis., State anxiety, Trait anxiety}, doi = {10.5530/pj.2023.15.101}, author = {Paul Alan Arkin Alvarado-Garc{\'\i}a and Maril{\'u} Roxana Soto-V{\'a}squez and Francisco Mercedes Infantes Gomez and Natalia Mavila Guzm{\'a}n Rodr{\'\i}guez and Yolanda Elizabeth Rodr{\'\i}guez de Guzm{\'a}n and Demetrio Rafael Jara-Aguilar and Roger Antonio Rengifo-Penadillos and Jos{\'e} Gilberto Gavidia-Valencia and Iris Melina Alfaro-Beltr{\'a}n} }