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May 20, 2025Industrial Crops and ProductsOpen Access

Function analysis of essential oils as environmental scents for improving undergraduate students emotional state

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Authors

JSJiale SunQilu University of TechnologyYXYingchun XuNanjing Agricultural UniversityRCRumei ChenAgricultural Information Institute

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Overview

Interventional study reveals that inhaling specific plant essential oils improves emotional states and reduces autonomic arousal in university students, indicating their utility for indoor stress...

Key Points

  • To evaluate the efficacy of 29 plant essential oils as environmental scents for emotional regulation and physiological relaxation in university students.
  • Assessed emotional and psychological responses across 29 plant essential oils in a cohort of 1,013 university students.
  • Quantified subjective emotional shifts using the Profile of Mood States (POMS) and Semantic Differentiation Scale tests.
  • Measured autonomic and neurological changes via blood pressure, heart rate, and electroencephalogram (EEG) parameters during inhalation of selected oils.
  • Nine essential oils significantly improved emotional states, led by sweet orange oil with shifts of −20.27% on the POMS and +26.71% on the Semantic Differentiation Scale.
  • Water lily and sweet orange oils significantly lowered blood pressure, heart rate, and nervous system excitation, with water lily reducing EEG stress by −24.28% and attention by −15.68%, and sweet orange reducing focus by −22.06%.
  • Water lily, clove, and lavender oils effectively reduced stress and promoted calmness, with individual scent preference displaying a positive correlation with emotional benefit.

Cite This Study

Sun et al. (2025) studied this question.

synapsesocial.com/papers/6a962b7d7ab4f41b02a1340chttps://doi.org/10.1016/j.indcrop.2025.121200
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