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Influence of concentration of fragrances on salivary α-amylase

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Synopsis The objective is to reveal the influence of the concentration of fragrances on salivary biomarkers, which reflect the human stress system, in 15 female young healthy adults. and were used as the test samples. Salivary biomarkers such as α-amylase activity (AMY), cortisol (CORT) and dehydroepiandrosterone (DHEA) were measured during baseline, inhalation and post-inhalation periods. Our results indicated that (i) a significant difference was not observed for the control and the 3 wt% test samples, however, the AMY was decreased by inhalation of the 1 wt% test samples (<0.05); (ii) AMY levels changed more significantly than did the hormone levels; (iii) a tendency of negative correlation was not observed between DHEA and CORT. It was considered that the time-course change of AMY might be a useful index of the inhalation of fragrances, which reflects the acute psychosomatic reactivity of humans.

French
Résumé

Le but de cette étude est de mettre en évidence l’influence de la concentration en parfum sur les marqueurs salivaires du système de stress humain chez 15 femmes adultes. Les échantillons testés sont Lavandula officinalis et Citrus aurantium. Les bio marqueurs salivaires comme l’activité de l’α-amylase (AMY), le cortisol (CORT) et la déhydroépiandrostérone (DHEA) sont mesurés avant, pendant et après les périodes d’inhalation. Les résultats ne montrent aucune différence significative entre le contrôle et les essais pour une concentration de 3 % alors que AMY diminue significativement (P < 0.05) pour une concentration 1%. Les taux d’AMY varient de façon plus significative que le taux des hormones et il n’y a pas de corrélation négative sur les tendances en DHEA et CORT. L’analyse au cours du temps des changements de l’activité AMY peut, lors d’inhalation de parfums, se révéler un indicateur de la réactivité psychosomatique humaine.
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Keywords: DHEA; amylase; cortisol; fragrance; salivary biomarker

Document Type: Research Article

Affiliations: 1: Graduate School of Engineering, Iwate University, Morioka 2: Graduate School of Science and Engineering, University of Toyama, Toyama, Japan

Publication date: October 1, 2009

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