Screening test for deodorizing substances from marine algae and identification of phlorotannins as the effective ingredients in Eisenia bicyclis |
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| Authors: | Noriyoshi Kita Kenshiro Fujimoto Ichiro Nakajima Rieko Hayashi Koji Shibuya |
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| Institution: | 1. Laboratory of Food Science, Department of Food Chemistry, Faculty of Agriculture, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, 981, Sendai, Miyagi, Japan
3. Applied Research Laboratories, Lion Corp., 100 Tajima, 256, Odawara, Kanagawa, Japan
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| Abstract: | Aqueous extracts from 33 species of marine algae were assessed for their methyl mercaptan-trapping activity by gas chromatography to search for novel natural oral deodorants. Brown algae belonging to the Laminariales such as Eisenia bicyclis, Ecklonia cava and Ecklonia kurome were found to show remarkable deodorizing action against methyl mercaptan. The effective components in Eisenia bicyclis were identified as a phlorotannin, a group of molecules which are characteristic components of Laminariales. In addition phlorotannins extracted from E. bicyclis were more effective at reducing methyl mercaptan than conventional natural deodorants such as chlorophyll and sodium copper chlorophyllin.Author for Correspondence |
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| Keywords: | methyl mercaptan phlorotannin deodorizing activity Eisenia bicyclis |
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