Title |
Black tea aroma inhibited increase of salivary chromogranin-A after arithmetic tasks
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Published in |
Journal of Physiological Anthropology, January 2018
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DOI | 10.1186/s40101-018-0163-0 |
Pubmed ID | |
Authors |
Ai Yoto, Natsuki Fukui, Chisa Kaneda, Shoko Torita, Keiichi Goto, Fumio Nanjo, Hidehiko Yokogoshi |
Abstract |
Growing attention has been paid to the effects of food flavor components on alleviating negative brain functions caused by stressful lifestyles. In this study, we investigated the alleviating effect of two kinds of black tea aromas on physical and psychological stress induced by the Uchida-Kraepelin test, based on salivary chromogranin-A (CgA) levels as a stress marker and subjective evaluations (Profile of Mood States). Compared with the water exposure control, inhaling black tea aroma (Darjeeling and Assam in this study) induced lower salivary CgA concentration levels after 30 min of mental stress load tasks. This anti-stress effect of black tea aroma did not differ between the two tea types even though the concentration of the anti-stress components in the Darjeeling tea aroma was higher than that in the Assam aroma. However, Darjeeling tea aroma tended to decrease the tension and/or anxiety score immediately after the first exposure. Inhaling black tea aroma may diminish stress levels caused by arithmetic mental stress tasks, and Darjeeling tea aroma tended to improve mood before mental stress load. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 6 | 20% |
India | 6 | 20% |
United States | 3 | 10% |
Uganda | 1 | 3% |
Canada | 1 | 3% |
Unknown | 13 | 43% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 26 | 87% |
Scientists | 2 | 7% |
Practitioners (doctors, other healthcare professionals) | 2 | 7% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 48 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 7 | 15% |
Student > Master | 6 | 13% |
Student > Bachelor | 6 | 13% |
Student > Doctoral Student | 2 | 4% |
Other | 2 | 4% |
Other | 8 | 17% |
Unknown | 17 | 35% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 7 | 15% |
Nursing and Health Professions | 5 | 10% |
Psychology | 4 | 8% |
Agricultural and Biological Sciences | 3 | 6% |
Computer Science | 2 | 4% |
Other | 7 | 15% |
Unknown | 20 | 42% |