Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base

Detalhes bibliográficos
Autor(a) principal: Carvalho Filho, Rothchild Sousa de Morais
Data de Publicação: 2021
Outros Autores: Pereira, João Clécio Alves, Assis, Jairo Borges de
Tipo de documento: Artigo
Idioma: por
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/20263
Resumo: Acid-base natural indicators are dyes extracted from plant parts. These dyes have chromophores in their composition, a substance responsible for color variation as a function of pH. The Napoleon's Hat (Thevetia peruviana (pers.) K. Schum) is a shrubby plant with a woody and lactescent texture. the aim of this study was to evaluate the potential of napoleon's hat (Thevetia peruviana (pers.) K. Schum) as a new natural acid-base indicator and to study the thermal stability behavior of this natural dye. The aqueous extract of napoleon's hat showed excellent color variation as a function of pH in basic medium and in acidic character, it did not show color variation, becoming colorless, thus, it presented similar characteristics to the renowned phenolphthalein indicator. In addition, the natural extract presented excellent thermal stability, not oxidizing during the period under study, becoming an excellent natural acid-base indicator that is easy to acquire and has a low cost to be used in the teaching of Chemistry.
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spelling Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-baseSombrero de napoleón (thevetia peruviana (pers.) k. schum): nuevo indicador natural ácido-baseChapéu-de-napoleão (thevetia peruviana (pers.) k. schum): novo indicador natural ácido-baseEstabilidade Térmica; Thevetia peruviana; Indicador Ácido-Base.Estabilidade térmicaThevetia peruvianaIndicador ácido-base.Thermal stabilityThevetia peruvianaAcid-base indicator.Estabilidad térmicaThevetia peruvianaIndicador ácido-base.Acid-base natural indicators are dyes extracted from plant parts. These dyes have chromophores in their composition, a substance responsible for color variation as a function of pH. The Napoleon's Hat (Thevetia peruviana (pers.) K. Schum) is a shrubby plant with a woody and lactescent texture. the aim of this study was to evaluate the potential of napoleon's hat (Thevetia peruviana (pers.) K. Schum) as a new natural acid-base indicator and to study the thermal stability behavior of this natural dye. The aqueous extract of napoleon's hat showed excellent color variation as a function of pH in basic medium and in acidic character, it did not show color variation, becoming colorless, thus, it presented similar characteristics to the renowned phenolphthalein indicator. In addition, the natural extract presented excellent thermal stability, not oxidizing during the period under study, becoming an excellent natural acid-base indicator that is easy to acquire and has a low cost to be used in the teaching of Chemistry.Los indicadores ácido-base naturales son tintes extraídos de partes de plantas. Estos tintes tienen cromóforos en su composición, sustancia responsable de la variación de color en función del pH. El sombrero de Napoleón (Thevetia peruviana (pers.) K. Schum) es una planta arbustiva de textura leñosa y lactescente. El objetivo de este estudio fue evaluar el potencial del sombrero de napoleón (Thevetia peruviana (pers.) K. Schum) como un nuevo indicador ácido-base natural y estudiar el comportamiento de estabilidad térmica de este tinte natural. El extracto acuoso de sombrero de napoleón mostró una excelente variación de color en función del pH en medio básico y en carácter ácido, no mostró variación de color, por lo que se volvió incoloro, por lo que presentó características similares al reconocido indicador de fenolftaleína. Además, el extracto natural presentó excelente estabilidad térmica, no oxidando durante el período en estudio, convirtiéndose en un excelente indicador ácido-base natural, fácil de adquirir y de bajo costo para ser utilizado en la enseñanza de la Química.Os indicadores naturais ácido-base são corantes extraídos de partes de plantas. Esses corantes apresentam cromóforos em sua composição, substância responsável pela variação de coloração em função do pH. O chapéu-de-napoleão (Thevetia peruviana (pers.) K. Schum) é uma planta arbustiva, de textura lenhosa e lactescente. o objetivo desse estudo foi avaliar o potencial do chapéu-de-napoleão (Thevetia peruviana (pers.) K. Schum) como novo indicador natural ácido-base e estudar o compartamento da estabilidade térmica desse corante natural. O extrato aquoso do chapéu-de-napoleão apresentou excelente variação de coloração em função do pH em meio básico e em caráter ácido, não apresentou variação de coloração, ficando incolor, desse modo, apresentou característica semelhante do indicador renomado fenolftaleína. Além disso, o extrato natural apresentou excelente estabilidade térmica, não oxidando no período em estudo, vindo a ser um excelente indicador natural ácido-base de fácil aquisição e baixo custo para ser usado no ensino de Química.Research, Society and Development2021-09-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/2026310.33448/rsd-v10i12.20263Research, Society and Development; Vol. 10 No. 12; e101101220263Research, Society and Development; Vol. 10 Núm. 12; e101101220263Research, Society and Development; v. 10 n. 12; e1011012202632525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/20263/18021Copyright (c) 2021 Rothchild Sousa de Morais Carvalho Filho; João Clécio Alves Pereira; Jairo Borges de Assishttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessCarvalho Filho, Rothchild Sousa de Morais Pereira, João Clécio AlvesAssis, Jairo Borges de2021-11-14T20:26:51Zoai:ojs.pkp.sfu.ca:article/20263Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:39:57.951503Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base
Sombrero de napoleón (thevetia peruviana (pers.) k. schum): nuevo indicador natural ácido-base
Chapéu-de-napoleão (thevetia peruviana (pers.) k. schum): novo indicador natural ácido-base
title Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base
spellingShingle Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base
Carvalho Filho, Rothchild Sousa de Morais
Estabilidade Térmica; Thevetia peruviana; Indicador Ácido-Base.
Estabilidade térmica
Thevetia peruviana
Indicador ácido-base.
Thermal stability
Thevetia peruviana
Acid-base indicator.
Estabilidad térmica
Thevetia peruviana
Indicador ácido-base.
title_short Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base
title_full Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base
title_fullStr Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base
title_full_unstemmed Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base
title_sort Napoleon's hat (thevetia peruviana (pers.) k. schum): new natural indicator acid-base
author Carvalho Filho, Rothchild Sousa de Morais
author_facet Carvalho Filho, Rothchild Sousa de Morais
Pereira, João Clécio Alves
Assis, Jairo Borges de
author_role author
author2 Pereira, João Clécio Alves
Assis, Jairo Borges de
author2_role author
author
dc.contributor.author.fl_str_mv Carvalho Filho, Rothchild Sousa de Morais
Pereira, João Clécio Alves
Assis, Jairo Borges de
dc.subject.por.fl_str_mv Estabilidade Térmica; Thevetia peruviana; Indicador Ácido-Base.
Estabilidade térmica
Thevetia peruviana
Indicador ácido-base.
Thermal stability
Thevetia peruviana
Acid-base indicator.
Estabilidad térmica
Thevetia peruviana
Indicador ácido-base.
topic Estabilidade Térmica; Thevetia peruviana; Indicador Ácido-Base.
Estabilidade térmica
Thevetia peruviana
Indicador ácido-base.
Thermal stability
Thevetia peruviana
Acid-base indicator.
Estabilidad térmica
Thevetia peruviana
Indicador ácido-base.
description Acid-base natural indicators are dyes extracted from plant parts. These dyes have chromophores in their composition, a substance responsible for color variation as a function of pH. The Napoleon's Hat (Thevetia peruviana (pers.) K. Schum) is a shrubby plant with a woody and lactescent texture. the aim of this study was to evaluate the potential of napoleon's hat (Thevetia peruviana (pers.) K. Schum) as a new natural acid-base indicator and to study the thermal stability behavior of this natural dye. The aqueous extract of napoleon's hat showed excellent color variation as a function of pH in basic medium and in acidic character, it did not show color variation, becoming colorless, thus, it presented similar characteristics to the renowned phenolphthalein indicator. In addition, the natural extract presented excellent thermal stability, not oxidizing during the period under study, becoming an excellent natural acid-base indicator that is easy to acquire and has a low cost to be used in the teaching of Chemistry.
publishDate 2021
dc.date.none.fl_str_mv 2021-09-14
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/20263
10.33448/rsd-v10i12.20263
url https://rsdjournal.org/index.php/rsd/article/view/20263
identifier_str_mv 10.33448/rsd-v10i12.20263
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/20263/18021
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 10 No. 12; e101101220263
Research, Society and Development; Vol. 10 Núm. 12; e101101220263
Research, Society and Development; v. 10 n. 12; e101101220263
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
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instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
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