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Kim J, Park S, Kim H, Roh D, Kim DH. Effects of Phytoncide Fragrance on Resting-State Brain Activity in Mild Cognitive Impairment: A Randomized Double-Blind Controlled Study. JOURNAL OF INTEGRATIVE AND COMPLEMENTARY MEDICINE 2024. [PMID: 38530093 DOI: 10.1089/jicm.2023.0185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Introduction: The therapeutic potential of phytoncide fragrances may be optimal for patients with mild cognitive impairment (MCI) that display complex symptomatology. This study aimed to explore the clinical value of phytoncide by evaluating its electrophysiological effects in patients with MCI. Materials and Methods: This was a double-blind, randomized controlled trial. A total of 24 community-dwelling patients were randomly assigned to either a phytoncide or no-odor group. Participants wore a dental mask, for 30 min at rest that had either the fragrance stimulus or water added to it. The quantitative electroencephalography (EEG) during the resting state was recorded before and after a single intervention. Results: There were significant interaction effects in absolute EEG-power values in the occipital (F = 6.52, p = 0.018) and parietal (F = 5.41, p = 0.030) left hemisphere at β frequency. Phytoncide odor significantly decreased low and high β activity in the occipital (corrected p = 0.009) and parietal (corrected p = 0.047) left hemisphere, respectively. In source localization, phytoncide odor significantly decreased deep source activation in the left inferior and middle frontal gyri at β 2 frequency band compared with the no-odor group (threshold = 4.25, p < 0.05). Conclusions: Reductions in β, indicative of anxiety, depression, and stress, suggest relief from emotion-related symptoms that are common in patients with MCI. Trial Registration: Clinical Trials Registry Korea (registration: KCT0007317).
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Affiliation(s)
- Jiheon Kim
- Department of Psychiatry, Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
- Mind-Neuromodulation Laboratory, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Seungchan Park
- Mind-Neuromodulation Laboratory, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Hansol Kim
- Mind-Neuromodulation Laboratory, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Daeyoung Roh
- Department of Psychiatry, Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
- Mind-Neuromodulation Laboratory, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Do Hoon Kim
- Department of Psychiatry, Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
- Mind-Neuromodulation Laboratory, College of Medicine, Hallym University, Chuncheon, Republic of Korea
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Choi NY, Park SA, Lee YR, Lee CH. Psychophysiological Responses of Humans during Seed-Sowing Activity Using Soil Inoculated with Streptomyces rimosus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16275. [PMID: 36498346 PMCID: PMC9738200 DOI: 10.3390/ijerph192316275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Electroencephalogram (EEG) responses and serum metabolite levels were used to investigate the effects of horticultural activities (seed-sowing) on the psychophysiological aspects of adults based on the presence or absence of the soil microorganism Streptomyces rimosus. In this case, 31 adults were subjected to seed-sowing activities using S. rimosus inoculated (experimental group) and medium (control group) soils. EEG was measured to analyze the resulting psychophysiological response, and blood samples (5 mL) were collected. The relative gamma power (RG), relative high beta (RHB), and SEF 50 and SEF 90 were significantly higher in the right than in the left occipital lobe (p < 0.05). In both occipital lobes, ratios of SMR to theta (RST), mid beta to theta (RMT), and SMR-mid beta to theta (RSMT) were high (p < 0.05). GC-TOF-MS-based serum metabolite analysis detected 33 metabolites. Compared to the control group, the experimental group showed a lower content of amino acids (except aspartic acid), lipids, and C6 sugar monomers after the activity (p < 0.05). Aminomalonic acid was decreased, and aspartic acid was increased (p < 0.05). This study confirmed a positive effect on improving the concentration and attention of adults when seed-sowing activity was performed using S. rimosus-inoculated soil.
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Affiliation(s)
- Na-Yoon Choi
- Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Republic of Korea
| | - Sin-Ae Park
- Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Republic of Korea
- Research Institute for Bioactive-Metabolome Network, Konkuk University, Seoul 05029, Republic of Korea
- Department of Systems Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Ye-Rim Lee
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Choong Hwan Lee
- Research Institute for Bioactive-Metabolome Network, Konkuk University, Seoul 05029, Republic of Korea
- Department of Systems Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
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Kim SO, Kim MJ, Choi NY, Kim JH, Oh MS, Lee CH, Park SA. Psychophysiological and Metabolomics Responses of Adults during Horticultural Activities Using Soil Inoculated with Streptomyces rimosus: A Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:12901. [PMID: 36232200 PMCID: PMC9564959 DOI: 10.3390/ijerph191912901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/04/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
This study compared the physiological effects at a metabolomics level with autonomic nervous system responses in adults during soil mixing activities, based on the presence or absence of Streptomyces rimosus in the soil. Thirty adult participants performed soil mixing activities for 5 min using sterilized soil with culture media and Streptomyces rimosus, respectively. Blood samples were drawn twice from each participant after each activity. Electroencephalograms were measured during the activity. Serum metabolites underwent metabolite profiling by gas chromatography, followed by multivariate analyses. Serum brain-derived neurotrophic factor and C-reactive protein levels were measured by Enzyme-Linked Immunosorbent Assay. Soil-emitted volatile organic compounds were identified via solid-phase microextraction and gas chromatography-mass spectroscopy, followed by multivariate analyses. The volatile compound analysis revealed that the terpenoid and benzoid compounds, geosmin, and 2-methylisoborneol were greater in soil with Streptomyces rimosus. Serum metabolomics revealed that the treatment group (soil inoculated with Streptomyces rimosus) possessed relatively higher levels of serotonin compared to the control group (soil mixed with culture media), and serum C-reactive protein levels were significantly lower in the treatment group. In the treatment group, the electroencephalogram revealed that alpha band activity of the occipital lobe increased. This study concludes that Streptomyces rimosus soil contact can positively affect human metabolic and autonomic reactions. Therefore, this pilot study confirmed the possible role of soil microorganisms in horticultural activities for psychophysiological effects in humans.
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Affiliation(s)
- Seon-Ok Kim
- Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Korea
| | - Min Ji Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Na-Yoon Choi
- Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Korea
| | - Jin Hee Kim
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Myung Sook Oh
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Choong Hwan Lee
- MetaMass Corp., Seoul 05029, Korea
- Department of Systems Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Sin-Ae Park
- Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Korea
- Department of Systems Biotechnology, Konkuk University, Seoul 05029, Korea
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Hong M, Jang H, Bo S, Kim M, Deepa P, Park J, Sowndhararajan K, Kim S. Changes in Human Electroencephalographic Activity in Response to Agastache rugosa Essential Oil Exposure. Behav Sci (Basel) 2022; 12:bs12070238. [PMID: 35877308 PMCID: PMC9311756 DOI: 10.3390/bs12070238] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/10/2022] [Accepted: 07/14/2022] [Indexed: 02/04/2023] Open
Abstract
Agastache rugosa (Korean mint) is an important medicinal and aromatic plant and its aerial parts have a pleasant fragrance. A. rugosa leaves are used as an ingredient in salads and soups for enhancing the aroma and taste of foods in Korea. However, there is no report on the influence of the aroma of A. rugosa on human psychophysiological activity. Therefore, the present study aimed to investigate the effect of exposure to the essential oil of Korean A. rugosa on human electroencephalographic (EEG) activity. The essential oil of A. rugosa was isolated using steam distillation extraction and its composition was determined by gas chromatography and mass spectrometry (GC–MS) analysis. In the EEG study, 38 healthy volunteers (19 men and 19 women) participated. The EEG readings were analyzed for 25 EEG indices from 29 electrodes placed on the scalp according to the international 10–20 system. The major component in the essential oil of A. rugosa was estragole (89.49%) followed by D-limonene (3.40%), menthone (1.80%), and pulegone (1.86%). In the EEG study, significant decreases in absolute theta (AT) and relative theta (RT) power spectra were observed during the exposure to A. rugosa essential oil when compared to that of no odor exposure. Whereas relative alpha (RA), relative slow alpha (RSA), spectral edge frequency 50% (SEF50), and spectral edge frequency 50% of alpha (ASEF) power spectra values significantly increased. These results reveal that the EEG power spectra changes incurred during the exposure to the essential oil of A. rugosa may be associated with the enhancement of freshness and concentration states of the human brain.
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Affiliation(s)
- Minji Hong
- School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea; (M.H.); (H.J.); (S.B.); (M.K.); (P.D.)
| | - Hyejeong Jang
- School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea; (M.H.); (H.J.); (S.B.); (M.K.); (P.D.)
| | - Sela Bo
- School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea; (M.H.); (H.J.); (S.B.); (M.K.); (P.D.)
| | - Minju Kim
- School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea; (M.H.); (H.J.); (S.B.); (M.K.); (P.D.)
| | - Ponnuvel Deepa
- School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea; (M.H.); (H.J.); (S.B.); (M.K.); (P.D.)
| | - Jiyea Park
- Bigsome Inc., 501 Jinju-daero, Jinju 52828, Korea;
| | | | - Songmun Kim
- School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea; (M.H.); (H.J.); (S.B.); (M.K.); (P.D.)
- Correspondence: ; Tel.: +82-33-250-6447
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Huang X, Wang S, Wang G, Zhu S, Ye Z. Kinetic and mechanistic investigation of geosmin and 2-methylisoborneol degradation using UV-assisted photoelectrochemical. CHEMOSPHERE 2022; 290:133325. [PMID: 34922967 DOI: 10.1016/j.chemosphere.2021.133325] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 11/22/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
The taste and odor (T&O) problem represented by 2-methylisoborneol (2-MIB) and geosmin (GSM) in water is the multiple undesirable substances in the drinking water and the aquatic industry. In this study, the UV-assisted photoelectrochemical, a prospective advanced oxidation process (AOP), was evaluated for the degradation of 2-MIB and GSM. In contrast to UV photochemical and electrochemical, the degradation ratio of GSM (2-MIB) increase to 96% (95%) in 25 min. The removal ratio and rate depended on reaction time, electrolyte concentration, current density, and water quality parameters (e.g. pH, HCO3-, natural organic matter, and tap water). Among these parameters, a high concentration of electrolyte and acidic solutions could accelerate the rate and increase the ratio, while alkaline conditions and the impurity content had negative effects. Furthermore, the significant role of various reactive species (e.g. HO∙, Cl, ClO, etc) were highlighted by scavenging experiments. Complex free radicals exist was further verified by electron paramagnetic resonance spectroscopy (EPR) experiments. The intermediates were identified and the possible degradation pathways during the UV-assisted photoelectrochemical reactions of both compounds were proposed. Overall, the UV-assisted photoelectrochemical is beneficial to the removal of GSM and 2-MIB in water.
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Affiliation(s)
- Xiaoling Huang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Shuo Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Ganxiang Wang
- Pinghu Fisheries Technology Promotion Center, Pinghu, 314200, China
| | - Songming Zhu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Ocean Academy, Zhejiang University, Zhoushan, 316000, China
| | - Zhangying Ye
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Ocean Academy, Zhejiang University, Zhoushan, 316000, China.
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Kim M, Chhoeun TB, Kim T, Sowndhararajan K, Kim S. The gender variation on the electroencephalographic activity in response to the exposure of black pepper essential oil from Kampong Cham, Cambodia. FLAVOUR FRAG J 2020. [DOI: 10.1002/ffj.3560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Minju Kim
- School of Natural Resources and Environmental Science Kangwon National University Chuncheon Korea
| | - Tith Bun Chhoeun
- Department of Agronomy Kampong Cham National School of Agriculture Kampong Cham Cambodia
| | - Taehee Kim
- Gangwondo Agricultural Research and Extension Services Agro‐Food Research Institute Chuncheon Korea
| | | | - Songmun Kim
- School of Natural Resources and Environmental Science Kangwon National University Chuncheon Korea
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Kim M, Song J, Nishi K, Sowndhararajan K, Kim S. Changes in the Electroencephalographic Activity in Response to Odors Produced by Organic Compounds. J PSYCHOPHYSIOL 2020. [DOI: 10.1027/0269-8803/a000234] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract. Volatile organic compounds are widely used to manufacture various products in addition to research purposes. They play an important role in the air quality of outdoor and indoor with a pleasant or unpleasant odor. It is well known that the odor of chemicals with different structures can affect brain functions differently. In general, organic compounds are mainly characterized by their functional groups. Acetic acid, acetaldehyde, acetone, and acetonitrile are widely used laboratory chemicals with the same methyl group, but different functional groups. Hence, the present study was aimed to investigate whether the exposure of these four chemicals (10%) exhibits the same electroencephalographic (EEG) activity or different. For this purpose, the EEG was recorded in 20 male healthy volunteers. The EEG was recorded from 32 electrodes located on the scalp, based on the International 10–20 system with modified combinatorial nomenclature. The results indicated that tested subjects are less sensitive to acetic acid odor than other three chemicals. The absolute theta activity significantly increased at Cp5 and F8 regions, and the relative mid-beta (RMB) significantly decreased at Fc1 region during the exposure of acetic acid. On the other hand, acetaldehyde, acetone, and acetonitrile produced EEG changes in many indices such as relative theta, relative gamma, relative high beta, relative beta, relative slow beta, the ratio of alpha to high beta, and spectral edge frequencies. However, there was no significant change in the absolute wave activity. Although acetaldehyde, acetone, and acetonitrile odors affected almost similar EEG indices, they exhibited changes in different brain regions. The variations in the EEG activity of these chemicals may be due to the activation of different olfactory receptors, odor characteristics, and structural arrangements.
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Affiliation(s)
- Minju Kim
- School of Natural Resources and Environmental Science, Kangwon National University, Gangwon-do, Republic of Korea
| | - Jieun Song
- School of Natural Resources and Environmental Science, Kangwon National University, Gangwon-do, Republic of Korea
| | - Kosuke Nishi
- Department of Bioscience, Ehime University, Japan
| | - Kandhasamy Sowndhararajan
- School of Natural Resources and Environmental Science, Kangwon National University, Gangwon-do, Republic of Korea
- Department of Botany, Kongunadu Arts and Science College, Coimbatore, Tamil Nadu, India
| | - Songmun Kim
- School of Natural Resources and Environmental Science, Kangwon National University, Gangwon-do, Republic of Korea
- Gangwon Perfume Alchemy Ltd. Co., Gangwon-do, Republic of Korea
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