{"created":"2023-05-15T14:39:28.677103+00:00","id":54221,"links":{},"metadata":{"_buckets":{"deposit":"e1b10737-eedb-4401-88eb-856225a19aae"},"_deposit":{"created_by":1,"id":"54221","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"54221"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00054221","sets":["2"]},"author_link":["553594","553586","553596","553600","553591","553593","553597","553598","553589","553595","553588","553587","553590","553592","553599"],"item_10003_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2009-11","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"Supplement 1","bibliographicPageEnd":"S191","bibliographicPageStart":"S191","bibliographicVolumeNumber":"47","bibliographic_titles":[{"bibliographic_title":"Free Radical Biology and Medicine"}]}]},"item_10003_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_10003_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0891-5849","subitem_source_identifier_type":"ISSN"}]},"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":"553586","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Uto, Yoshihiro"}],"nameIdentifiers":[{"nameIdentifier":"553587","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ohkubo, Kei"}],"nameIdentifiers":[{"nameIdentifier":"553588","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Matsumoto, Kenichiro"}],"nameIdentifiers":[{"nameIdentifier":"553589","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hori, Hitoshi"}],"nameIdentifiers":[{"nameIdentifier":"553590","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuhara, Kiyoshi"}],"nameIdentifiers":[{"nameIdentifier":"553591","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Okuda, Haruhiro"}],"nameIdentifiers":[{"nameIdentifier":"553592","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ikota, Nobuo"}],"nameIdentifiers":[{"nameIdentifier":"553593","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuzumi, Shunichi"}],"nameIdentifiers":[{"nameIdentifier":"553594","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ozawa, Toshihiko"}],"nameIdentifiers":[{"nameIdentifier":"553595","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Anzai, Kazunori"}],"nameIdentifiers":[{"nameIdentifier":"553596","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中西 郁夫","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"553597","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"松本 謙一郎","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"553598","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小澤 俊彦","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"553599","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"安西 和紀","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"553600","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 paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"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":"10003","owner":"1","path":["2"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-06-16"},"publish_date":"2010-06-16","publish_status":"0","recid":"54221","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":"2023-05-15T23:03:31.004453+00:00"}