{"id":54513,"date":"2003-02-01T00:00:00","date_gmt":"2018-12-04T05:45:43","guid":{"rendered":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/quantitative-evaluation-of-antioxidant-components-in-prunes\/"},"modified":"2018-12-04T06:45:43","modified_gmt":"2018-12-04T05:45:43","slug":"quantitative-evaluation-of-antioxidant-components-in-prunes","status":"publish","type":"resume","link":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/quantitative-evaluation-of-antioxidant-components-in-prunes\/","title":{"rendered":"Quantitative evaluation of antioxidant components in prunes (prunus domestica l.)"},"content":{"rendered":"

\u00ab\u00a0Prunes are known to show high antioxidant activity on the basis of the oxygen radical absorbance capacity (ORAC), and their major antioxidant components are caffeoylquinic acid isomers. The aim of this study is to prove the contribution of caffeoylquinic acid isomers to the ORAC of prunes, and to investigate the existence of other antioxidant components. Caffeoylquinic acid isomers in ethanol (EtOH) extracts of prunes were quantified by HPLC analysis, and the degree of contribution of these isomers to the ORAC was found to be 28.4%; hence, it was speculated that the remaining ORAC is dependent on other antioxidant compounds. EtOH extract was partitioned between hexane and H2O. The H2O layer was further separated into H2O and 2-100% methanol (MeOH) eluates by Diaion HP-20 column chromatography. Both the H2O and 50% MeOH eluates showed high values of total phenolics and ORAC, although the contribution of caffeoylquinic acid isomers to the ORAC was low. Therefore, it was predicted that unknown antioxidants exist in these fractions, and several compounds were identified by HPLC analysis. Furthermore, hydrolysis of EtOH extract residue led to higher levels of total phenolics and ORAC, and these results suggested the existence of conjugated antioxidant components in prunes.\u00a0\u00bb<\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-54513","resume","type-resume","status-publish","hentry"],"acf":{"adresse":"\"NAKATANI N,OSAKA CITY UNIV,GRAD SCH HUMAN LIFE SCI DIV FOOD & HLTH SCI;3-3-138 SUGIMOTO; OSAKA 5588585, JAPAN.nakatani@life.osaka-cu.ac.jp\"","annee":"2003","mois":"2","numero":"51:5","page":"1480-1485","auteurs":[{"ID":54507,"post_author":"0","post_date":"2018-12-04 06:45:34","post_date_gmt":"2018-12-04 05:45:34","post_content":"","post_title":"Nakatani","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"nakatani-2","to_ping":"","pinged":"","post_modified":"2018-12-04 06:45:34","post_modified_gmt":"2018-12-04 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05:45:37","post_content":"","post_title":"Kayano","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"kayano","to_ping":"","pinged":"","post_modified":"2018-12-04 06:45:37","post_modified_gmt":"2018-12-04 05:45:37","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/kayano\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":54510,"post_author":"0","post_date":"2018-12-04 06:45:38","post_date_gmt":"2018-12-04 05:45:38","post_content":"","post_title":"Kikuzaki","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"kikuzaki","to_ping":"","pinged":"","post_modified":"2018-12-04 06:45:38","post_modified_gmt":"2018-12-04 05:45:38","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/kikuzaki\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":49855,"post_author":"0","post_date":"2018-12-04 05:03:46","post_date_gmt":"2018-12-04 04:03:46","post_content":"","post_title":"Mitani","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"mitani","to_ping":"","pinged":"","post_modified":"2018-12-04 05:03:46","post_modified_gmt":"2018-12-04 04:03:46","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/mitani\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":54511,"post_author":"0","post_date":"2018-12-04 06:45:40","post_date_gmt":"2018-12-04 05:45:40","post_content":"","post_title":"Shioaki","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"shioaki","to_ping":"","pinged":"","post_modified":"2018-12-04 06:45:40","post_modified_gmt":"2018-12-04 05:45:40","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/shioaki\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":48760,"post_author":"0","post_date":"2018-12-04 04:43:10","post_date_gmt":"2018-12-04 03:43:10","post_content":"","post_title":"Suzuki","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"suzuki-2","to_ping":"","pinged":"","post_modified":"2018-12-04 04:43:10","post_modified_gmt":"2018-12-04 03:43:10","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/suzuki-2\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":54512,"post_author":"0","post_date":"2018-12-04 06:45:42","post_date_gmt":"2018-12-04 05:45:42","post_content":"","post_title":"Yamada","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"yamada-4","to_ping":"","pinged":"","post_modified":"2018-12-04 06:45:42","post_modified_gmt":"2018-12-04 05:45:42","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/yamada-4\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"}],"sources":[{"ID":1648,"post_author":"0","post_date":"2018-12-03 16:01:16","post_date_gmt":"2018-12-03 15:01:16","post_content":"","post_title":"Journal of agricultural and food 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