{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T18:40:00Z","timestamp":1784227200914,"version":"3.55.0"},"reference-count":25,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2014,11,27]],"date-time":"2014-11-27T00:00:00Z","timestamp":1417046400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Phytochemical Analysis"],"published-print":{"date-parts":[[2015,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>The growing interest in determination of anti\u2010oxidant capacity through non\u2010labour, effective and less costly methods encouraged the development of the spectrophotometric procedure presented in this study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To investigate the reduction reaction of Fe(III) in 3\u2010hydroxy\u20104\u2010nitroso\u20102,7\u2010naphthalenedisulphonic anion (NRS) medium as an alternative ferric reducing activity power (FRAP) assay for determining the total reduction capacity (RC).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and methods<\/jats:title>\n                    <jats:p>The absorbance values at 730\u2009nm were used to determine the RC of aqueous extracts of nine Brazilian plants. The results were compared with the values obtained with the 2,2\u2010diphenyl\u20101\u2010picrylhydrazyl (DPPH) method and with the total polyphenol content (TPC). The RCs of phenolic derivatives, flavonoids, amino acids and other anti\u2010oxidant compounds were determined.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Paired\n                      <jats:italic>t<\/jats:italic>\n                      \u2010test with RC values obtained with both assays (proposed FRAP and DPPH) showed no statistically significant difference. In addition, the RC values from the proposed FRAP assay are proportional to those found with TPC values (\n                      <jats:italic>r<\/jats:italic>\n                      =0.916). In addition, the conditional reduction potential of the Fe(III)\/Fe(II) couple (0.685\u2009V vs NHE (normal hydrogen electrode)) and the molar absorptivities at 730\u2009nm of the Fe(NRS)\n                      <jats:sub>3<\/jats:sub>\n                      <jats:sup>3\u2212<\/jats:sup>\n                      and Fe(NRS)\n                      <jats:sub>3<\/jats:sub>\n                      <jats:sup>4\u2212<\/jats:sup>\n                      complexes (1.88\u2009\u00d7\u200910\n                      <jats:sup>3<\/jats:sup>\n                      and 1.77\u2009\u00d7\u200910\n                      <jats:sup>4<\/jats:sup>\n                      \u2009L\/cm\u2009\u00d7\u2009mol, respectively) were calculated because these values were not available.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The proposed assay is adequate for determination of the RC of plant extracts, and the results infer that other samples derived from plants (e.g. beers and wines) and even biological samples (e.g. serum and urine) also could be analysed. Copyright \u00a9 2014 John Wiley &amp; Sons, Ltd.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/pca.2543","type":"journal-article","created":{"date-parts":[[2014,11,27]],"date-time":"2014-11-27T03:32:04Z","timestamp":1417059124000},"page":"119-126","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["The Evaluation of Reduction of Fe(III) in 3\u2010Hydroxy\u20104\u2010Nitroso\u20102,7\u2010Naphthalene Disulphonic Medium as an Alternative Ferric Reducing Activity Power Assay"],"prefix":"10.1002","volume":"26","author":[{"given":"Maryane Woth","family":"de Souza","sequence":"first","affiliation":[{"name":"Faculdade de Medicina da Funda\u00e7\u00e3o do ABC CEPES (Centro de Estudos, Pesquisa, Preven\u00e7\u00e3o e Tratamento em Sa\u00fade)  CEP\u2010 09060\u2010650 Santo Andr\u00e9 SP Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Horacio Dorigan","family":"Moya","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina da Funda\u00e7\u00e3o do ABC CEPES (Centro de Estudos, Pesquisa, Preven\u00e7\u00e3o e Tratamento em Sa\u00fade)  CEP\u2010 09060\u2010650 Santo Andr\u00e9 SP Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,11,27]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1021\/jf048741x"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.3390\/12071496"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.1080\/00032719708001764"},{"key":"e_1_2_5_5_1","first-page":"391","volume-title":"Standard Potentials in Aqueous Solution","author":"Bard AJ","year":"1985"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1039\/c0ay00245c"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.1039\/c0ay00754d"},{"key":"e_1_2_5_8_1","first-page":"236","volume-title":"Brazilian Pharmacopoeia","year":"2002"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1080\/00032718408065354"},{"key":"e_1_2_5_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/0076-6879(90)86093-B"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/jf030723c"},{"key":"e_1_2_5_12_1","first-page":"163","volume-title":"Oxidations in Organic Chemistry","author":"Hudlicky M.","year":"1990"},{"key":"e_1_2_5_13_1","first-page":"142","volume-title":"Textbook of Quantitative Chemical Analysis","author":"Jeffery GH","year":"1989"},{"key":"e_1_2_5_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/jf902197p"},{"key":"e_1_2_5_15_1","first-page":"55","volume-title":"Chemistry of the Metal Chelate Compounds","author":"Martell E","year":"1952"},{"key":"e_1_2_5_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-0010(199802)76:2<270::AID-JSFA945>3.0.CO;2-9"},{"key":"e_1_2_5_17_1","first-page":"73","volume-title":"Organic Chemistry","author":"Morrison RT","year":"1976"},{"key":"e_1_2_5_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-9140(96)02112-1"},{"key":"e_1_2_5_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/0009-8981(65)90176-2"},{"key":"e_1_2_5_20_1","doi-asserted-by":"publisher","DOI":"10.1246\/nikkashi1948.76.672"},{"key":"e_1_2_5_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0891-5849(99)00203-8"},{"key":"e_1_2_5_22_1","doi-asserted-by":"publisher","DOI":"10.4236\/abc.2013.36059"},{"key":"e_1_2_5_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-2670(00)85723-2"},{"key":"e_1_2_5_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2012.11.045"},{"key":"e_1_2_5_25_1","first-page":"8","volume-title":"Critically Selected Stability Constants of Metal Complexes","author":"Smith RM","year":"2004"},{"key":"e_1_2_5_26_1","first-page":"114","volume-title":"Eat, Drink and be Healthy: The Harvard Medical School Guide to Healthy Eating","author":"Willet CW","year":"2001"}],"container-title":["Phytochemical Analysis"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fpca.2543","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fpca.2543","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/pca.2543","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T16:49:44Z","timestamp":1761065384000},"score":1,"resource":{"primary":{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/10.1002\/pca.2543"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,11,27]]},"references-count":25,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2015,3]]}},"alternative-id":["10.1002\/pca.2543"],"URL":"https:\/\/doi.org\/10.1002\/pca.2543","archive":["Portico"],"relation":{},"ISSN":["0958-0344","1099-1565"],"issn-type":[{"value":"0958-0344","type":"print"},{"value":"1099-1565","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,11,27]]},"assertion":[{"value":"2014-05-01","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2014-09-19","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2014-11-27","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}