{"created":"2023-05-15T14:51:11.148590+00:00","id":69972,"links":{},"metadata":{"_buckets":{"deposit":"4327b1c2-9487-4e51-91e0-16f67b3a4452"},"_deposit":{"created_by":1,"id":"69972","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"69972"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00069972","sets":["10:28"]},"author_link":["687053","687061","687062","687052","687050","687056","687057","687048","687059","687060","687058","687055","687054","687049","687051"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2009-11-22","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"It is known that 2-methyl-6-phytylhydroquinone (2-MePHQ) and 2,3-dimethyl-6-phytylhydroquinone (2,3-Me2PHQ) are formed as precursors in the biosynthetic process of vitamin E.  However, very little is known about the antioxidative activity of these vitamin E precursors.  Thus, we determined the scavenging rate constants of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical by 2-MePHQ, 2,3-Me2PHQ, and their synthetic analogues, 2,5-dimethyl-6-phytylhydroquinone (2,5-Me2PHQ) and 2,3,5-trimethyl-6-phytylhydroquinone (2,3,5-Me3PHQ) in deaerated ethanol at 298 K using the stopped-flow technique.  2,3,5-Me3PHQ and 2,3-Me2PHQ, which have a methyl group at the C-3 position, showed a stronger DPPH radical-scavenging activity than alpha-tocopherol.  The mechanism of the DPPH radical-scavenging reaction by the hydroquinones will also be discussed based on the kinetic and theoretical results obtained in this study.","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"16th Annual Meeting of the Society for Free Radical Biology and Medicine (SFRBM)","subitem_description_type":"Other"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Nakanishi, Ikuo"}],"nameIdentifiers":[{"nameIdentifier":"687048","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Uto, Yoshihiro"}],"nameIdentifiers":[{"nameIdentifier":"687049","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ohkubo, Kei"}],"nameIdentifiers":[{"nameIdentifier":"687050","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Matsumoto, Kenichiro"}],"nameIdentifiers":[{"nameIdentifier":"687051","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hori, Hitoshi"}],"nameIdentifiers":[{"nameIdentifier":"687052","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuhara, Kiyoshi"}],"nameIdentifiers":[{"nameIdentifier":"687053","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Okuda, Haruhiro"}],"nameIdentifiers":[{"nameIdentifier":"687054","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ikota, Nobuo"}],"nameIdentifiers":[{"nameIdentifier":"687055","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuzumi, Shunichi"}],"nameIdentifiers":[{"nameIdentifier":"687056","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ozawa, Toshihiko"}],"nameIdentifiers":[{"nameIdentifier":"687057","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Anzai, Kazunori"}],"nameIdentifiers":[{"nameIdentifier":"687058","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中西 郁夫","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"687059","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"松本 謙一郎","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"687060","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小澤 俊彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"687061","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"安西 和紀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"687062","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Radical-Scavenging Activity of Biosynthetic Precursors of Vitamin E and Their Derivatives","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Radical-Scavenging Activity of Biosynthetic Precursors of Vitamin E and Their Derivatives"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2009-11-25"},"publish_date":"2009-11-25","publish_status":"0","recid":"69972","relation_version_is_last":true,"title":["Radical-Scavenging Activity of Biosynthetic Precursors of Vitamin E and Their Derivatives"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T20:08:17.827316+00:00"}