{"created":"2024-01-18T05:06:47.221375+00:00","id":2000287,"links":{},"metadata":{"_buckets":{"deposit":"0bdfa1d1-d6dc-4984-a289-f549ee101f9d"},"_deposit":{"created_by":15,"id":"2000287","owner":"15","owners":[15],"pid":{"revision_id":0,"type":"depid","value":"2000287"},"status":"published"},"_oai":{"id":"oai:mie-u.repo.nii.ac.jp:02000287","sets":["420:684:685"]},"author_link":[],"control_number":"2000287","item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2023","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"62","bibliographicPageStart":"51","bibliographicVolumeNumber":"77","bibliographic_titles":[{"bibliographic_title":"Holzforschung","bibliographic_titleLang":"en"}]}]},"item_10001_description_19":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Dehydrogenation polymer (DHP) is widely used as a model polymer of lignin. The chemical structure of DHP is highly affected by the synthesis conditions; however, the factors affecting DHP structure are not comprehensively understood. In this study, guaiacyl DHPs were synthesized to investigate the effects of reaction scale, pH, polymerization-enzyme activity, reaction media containing organic solvent, and differences between Zutropf (ZT) and Zulauf (ZL) modes on DHP properties. The DHPs were structurally characterized by size exclusion chromatography, 1H-13C HSQC NMR, and thioacidolysis with and without Raney nickel desulfuration. In ZT mode, smaller reaction scale significantly increased β-O-4 content, and β-O-4 formation was negatively correlated with the dose of polymerization-enzyme, horseradish peroxidase. Acidic condition (pH 4.0) in succinate buffer also increased the β-O-4 content of the DHP, although the α position of the DHP was acylated by the incorporation of succinic acid. DHPs prepared at pH 9.0 had high β-1 contents and low β-5 contents, while the reaction in 20% 1,4-dioxane markedly increased the molecular weight of the DHP. A systematic approach controlling the molecular structure of DHPs would increase their value as models for native and isolated lignins.","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"DEG RUYTER"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1515/hf-2022-0129","subitem_relation_type_select":"DOI"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1437-434X","subitem_source_identifier_type":"EISSN"}]},"item_10001_text_70":{"attribute_name":"資源タイプ（三重大）","attribute_value_mlt":[{"subitem_text_value":"Journal Article / 学術雑誌論文"}]},"item_10001_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Tokunaga Yuki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Watanabe Takashi","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2024-01-27"}],"filename":"2023JA0001.pdf","filesize":[{"value":"1.8 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"url":"https://mie-u.repo.nii.ac.jp/record/2000287/files/2023JA0001.pdf"},"version_id":"1c04b178-5e7f-4590-b65c-ef2dbd0b7347"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"dehydrogenation polymer","subitem_subject_scheme":"Other"},{"subitem_subject":"HSQC NMR","subitem_subject_scheme":"Other"},{"subitem_subject":"lignin","subitem_subject_scheme":"Other"},{"subitem_subject":"size exclusion chromatography","subitem_subject_scheme":"Other"},{"subitem_subject":"thioacidolysis","subitem_subject_scheme":"Other"}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"An investigation of the factors controlling the chemical structures of lignin dehydrogenation polymers","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"An investigation of the factors controlling the chemical structures of lignin dehydrogenation polymers","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"15","path":["685"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-01-27"},"publish_date":"2024-01-27","publish_status":"0","recid":"2000287","relation_version_is_last":true,"title":["An investigation of the factors controlling the chemical structures of lignin dehydrogenation polymers"],"weko_creator_id":"15","weko_shared_id":-1},"updated":"2024-01-18T05:33:13.850896+00:00"}