National Institute of Advanced Industrial Science and Technology

Oriental Yeast Co., Ltd.

Nisshin Seifun Group Inc.

Tatsunosuke Tomita

Kenji Kasuya

Keiko Tanaka

Yosuke Kikuchi

Koyomi Miyazaki

Nanako Itoh

Katsutaka Oishi

Yoshiaki Onishi

Shinichi Fukudome

Disclosed are a method of preparation and method of application of a circadian rhythm regulatory agent having as an active ingredient an alkylresorcinol represented by general formula (I) below and a circadian rhythm regulatory agent containing as an active ingredient an alkylresorcinol-containing extract from a cereal or a nut containing an alkylresorcinol of the following general formula (I). In the following general formula (I), Ris a saturated or unsaturated alkyl group; and Ris hydrogen or methyl. In general formula (I), Ris preferably at the para-position with respect to R, and Ris preferably a saturated or unsaturated alkyl group having 15 to 27 carbon atoms. [Chem. 1] 

Method of regulating circadian rhythm, and method of preparing circadian rhythm regulatory agent

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Ibaraki, Japan

Tatsunosuke Tomita