{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T01:30:41Z","timestamp":1777339841804,"version":"3.51.4"},"reference-count":39,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2023,1,26]],"date-time":"2023-01-26T00:00:00Z","timestamp":1674691200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry &amp; Biodiversity"],"published-print":{"date-parts":[[2023,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Aiming of self\u2010sustainable production, the search for biodegradable and biocompatible materials has brought with it the need to know the physicochemical and dielectric characteristics of polysaccharide\u2010based composite structures, which can be used as important and promising raw materials for biotechnology and electronic industries. Galactomannans are polysaccharides, extracted from seeds and microbiological sources, consisting of mannose and galactose. In this context, this work aimed to extract, purify and characterize by XRD, FTIR and impedance spectroscopy galactomannan obtained from seeds of <jats:italic>Adenanthera pavonina<\/jats:italic> L. The purification process was made with ethyl alcohol at concentrations of 70, 80 and 90\u2009%. Polymeric films were prepared by solvent slow evaporation at low temperatures. XRD measurements revealed that Galactomannan from <jats:italic>Adenanthera pavonina<\/jats:italic> L., after purification, has a semi\u2010crystalline structure due to the identification of two peaks the first between 5.849\u00b0 and 6.118\u00b0 and the second between 20.011\u00b0 and 20.247\u00b0. FTIR spectra showed the functional groups associated with monosaccharides of the galactomannan from <jats:italic>Adenanthera pavonina<\/jats:italic> L. seeds, as well as the typical polysaccharide bands and peaks, confirmed by literature data. The impedance results give an increment on the state\u2010of\u2010the\u2010art of this biomaterial by showing the existence of dielectric relaxations, independent of the degree of purification, using the dielectric modulus formalism. The permittivity analysis reveals the presence of water in the structure of the film, whose dipoles contribute to the relatively high value of the dielectric constant. From the results obtained, it can be concluded that purified galactomannan has the potential for possible applications in the electronics industry as a green and eco\u2010friendly dielectric material.<\/jats:p>","DOI":"10.1002\/cbdv.202200888","type":"journal-article","created":{"date-parts":[[2023,1,27]],"date-time":"2023-01-27T06:55:35Z","timestamp":1674802535000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Extraction, Purification and Electrical Characterization of Gross Galactomannan and Purified Galactomannan Obtained from <i>Adenanthera pavonina<\/i> L. Seeds"],"prefix":"10.1002","volume":"20","author":[{"given":"J. F.","family":"Silva Neto","sequence":"first","affiliation":[{"name":"Instituto Federal do Maranh\u00e3o \u2013 Campus Imperatriz Laborat\u00f3rio de Pesquisa  65919-050 Imperatriz Brasil"}]},{"given":"W. O.","family":"Pereira","sequence":"additional","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o, CCSST  65900-410 Imperatriz Brasil"}]},{"given":"L. A.","family":"Cavalcante","sequence":"additional","affiliation":[{"name":"Instituto Federal do Maranh\u00e3o \u2013 Campus Imperatriz Laborat\u00f3rio de Pesquisa  65919-050 Imperatriz Brasil"}]},{"given":"J. G.","family":"Oliveira Neto","sequence":"additional","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o, CCSST  65900-410 Imperatriz Brasil"}]},{"given":"M. P. F.","family":"Gra\u00e7a","sequence":"additional","affiliation":[{"name":"I3N and Physics Department Aveiro University  3810-193 Aveiro Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6216-3735","authenticated-orcid":false,"given":"S. R.","family":"Gavinho","sequence":"additional","affiliation":[{"name":"I3N and Physics Department Aveiro University  3810-193 Aveiro Portugal"}]},{"given":"F. M. B.","family":"Amaral","sequence":"additional","affiliation":[{"name":"Polit\u00e9cnico de Coimbra, ESTeSC Departamento de Ci\u00eancias Complementares, DCC  Rua 5 de Outubro \u2013 SM Bispo, Apartado 7006 3046-854 Coimbra Coimbra Portugal"}]},{"given":"A. O.","family":"Santos","sequence":"additional","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o, CCSST  65900-410 Imperatriz Brasil"}]},{"given":"A. S. B.","family":"Sombra","sequence":"additional","affiliation":[{"name":"Universidade Federal do Cear\u00e1 \u2013 Campus Pici LOCEM-Laborat\u00f3rio de Telecomunica\u00e7\u00f5es e Ci\u00eancia e Engenharia de Materiais Departamento de F\u00edsica  Avenida Humberto Monte, s\/n \u2013 Pici 60440-593 Fortaleza Brasil"}]},{"given":"Fernando","family":"Mendes","sequence":"additional","affiliation":[{"name":"Polit\u00e9cnico de Coimbra, ESTeSC Unidade Cientifico-Pedag\u00f3gica de Ci\u00eancias Biom\u00e9dicas Laboratoriais, UCPCBL  Rua 5 de Outubro \u2013 SM Bispo, Apartado 7006 3046-854 Coimbra Coimbra Portugal"}]},{"given":"A. A. M.","family":"Mac\u00eado","sequence":"additional","affiliation":[{"name":"Instituto Federal do Maranh\u00e3o \u2013 Campus Imperatriz Laborat\u00f3rio de Pesquisa  65919-050 Imperatriz Brasil"}]}],"member":"311","published-online":{"date-parts":[[2023,1,26]]},"reference":[{"key":"e_1_2_9_1_1","unstructured":"A. Jaromin M. Koryci\u0144ska A. 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