Tese

Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará

The genus Dipteryx harbors species known as cumaruzeiros, belonging to the Fabaceae family and originating in Central and South American countries. Among the species of this genus, Dipteryx odorata stands out historically in the Amazon, for the supply and commercialization of multiple products su...

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Autor principal: SOUSA, Bruna Cristine Martins de
Grau: Tese
Idioma: pt_BR
Publicado em: Universidade Federal do Oeste do Pará 2023
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spelling ir-123456789-7442023-01-20T20:24:17Z Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará SOUSA, Bruna Cristine Martins de VIEIRA, Thiago Almeida http://lattes.cnpq.br/4121093782754551 https://orcid.org/0000-0001-9926-2606 LUSTOSA, Denise Castro http://lattes.cnpq.br/8533910667262644 Cumaru Extratos vegetais Fitoquímica Atividade antioxidante Controle alternativo CNPQ::Ciências Sociais Aplicadas Recursos Naturais, Biodiversidade e Bioprospecção na Amazônia The genus Dipteryx harbors species known as cumaruzeiros, belonging to the Fabaceae family and originating in Central and South American countries. Among the species of this genus, Dipteryx odorata stands out historically in the Amazon, for the supply and commercialization of multiple products such as wood and seeds, used for the extraction of coumarin, the main active compound. The species Dipteryx punctata also has a wide distribution in the North region of Brazil, however, it lacks studies that detail its phytochemical composition and biological activities. In this sense, this work aimed to evaluate the chemical profile and the antioxidant and antifungal activities of ethanolic extracts of D. punctata. A systematic review was carried out on the genus Dipteryx using SciELO and the Brazilian Digital Library of Theses and Dissertations (BDTD) as databases. For chemical and biological evaluations, plant material was collected in five areas producing cumaru seeds, in Mojuí dos Campos, Pará. The extracts were obtained via Soxhlet, using 92.8% distilled ethanol as solvent, with a total duration of eight hours, calculating the final yield. Chemical analyzes of the extracts were performed by Thin Layer Chromatography (TLC), Gas Chromatography coupled to Mass Spectrometry (GCMS), and determination of phenolics and flavonoids. Antioxidant activity was performed by scavenging DPPH free radicals. The antifungal activity of the extracts was evaluated under in vitro and in vivo conditions. In the in vitro assay, the extracts and the coumarin standard were tested at concentrations: 10%, 20%, 30%, 40% and 50% (p: v), added in potato-dextrose-agar (PDA) medium, over the fungus Colletotrichum musae, the causal agent of anthracnose disease in bananas. The control consisted of fungal growth only in PDA medium. The experimental design was completely randomized (DCR), in a factorial scheme, with four replications. The evaluations were carried out by measuring the average diameter of the colonies, daily, for eight days. With the data from the colonies, the percentage of inhibition of growth (PIG), mycelial growth velocity index (MGVI) and the growth rate (Gr) were determined. In the in vivo assay, the extracts and coumarin were tested at concentrations of 40% and 50%, in preventive and curative applications. The experimental design was completely randomized (DCR), in a factorial scheme, with three replications. The evaluations were carried out by measuring the mean diameter of the lesions at intervals of two days, up to eight days after inoculation. The data obtained in the antifungal assays were submitted to analysis of variance and compared by the Tukey test (p≤0.05), using the statistical software SISVAR 5.6. Studies on the genus Dipteryx are more restricted to the species Dipteryx alata and Dipteryx odorata. The highest yields of extracts were obtained for residues and fruit seeds. The extracts from leaves, branches, residues and seeds presented the classes of terpenes, condensed and hydrolysable tannins, flavonoids and coumarin, as well as potential antioxidant action. The extracts from the branches and residues of the fruits of D. punctata and the coumarin pattern, caused the greatest inhibitions in the growth of the phytopathogen in vitro and in vivo, all extracts were effective, with emphasis on coumarin and for the preventive applications of concentrations tested. The results obtained for the extracts are promising and sources of investigation for the future development of natural products aimed at controlling anthracnose in a more sustainable way. O gênero Dipteryx abriga espécies conhecidas como cumaruzeiros, pertencentes à família Fabaceae e originárias de países da América Central e América do Sul. Dentre as espécies desse gênero, Dipteryx odorata destaca-se historicamente na Amazônia, pelo fornecimento e comercialização de múltiplos produtos como a madeira e as sementes, utilizadas para extração da cumarina, principal composto ativo. A espécie Dipteryx punctata também possui ampla distribuição na Região Norte do Brasil, no entanto, carece de estudos que detalhem sua composição fitoquímica e atividades biológicas. Neste sentido, este trabalho teve por objetivo avaliar o perfil químico e as atividades antioxidante e antifúngica de extratos etanólicos de D. punctata. Foi realizada uma revisão sistemática sobre o gênero Dipteryx utilizando como bases de dados a SciELO e a Biblioteca Digital Brasileira de Teses e Dissertações (BDTD). Para as avaliações química e biológica, o material vegetal foi coletado em cinco áreas produtoras de sementes de cumaru, em Mojuí dos Campos, Pará. Os extratos foram obtidos via Soxhlet, tendo como solvente etanol a 92,8% destilado, com duração total de oito horas, calculando-se o rendimento ao final. As análises químicas dos extratos foram realizadas por Cromatografia em Camada Delgada (CCD), Cromatografia Gasosa acoplada a Espectrometria de Massas (CG-EM), e determinação de fenólicos e flavonoides. A atividade antioxidante foi realizada pela captura de radicais livres DPPH. A atividade antifúngica dos extratos foi avaliada em condições in vitro e in vivo. No ensaio in vitro, os extratos e o padrão de cumarina foram testados nas concentrações: 10%, 20%, 30%, 40% e 50% (p: v), adicionadas em meio batata-dextrose-ágar (BDA), sobre o fungo Colletotrichum musae, agente causal da doença antracnose em banana. O controle consistiu no crescimento do fungo apenas em meio BDA. O delineamento experimental foi inteiramente casualizado (DIC), em esquema fatorial, com quatro repetições. As avaliações foram realizadas medindo-se o diâmetro médio das colônias, diariamente, durante oito dias. Com os dados das colônias, foram determinados o percentual de inibição do crescimento (PIC), índice de velocidade de crescimento micelial (IVCM) e a taxa de crescimento (Tx). No ensaio in vivo, os extratos e a cumarina foram testados nas concentrações de 40% e 50%, em aplicações preventiva e curativa. O delineamento experimental foi inteiramente casualizado (DIC), em esquema fatorial, com três repetições. As avaliações foram realizadas medindo-se o diâmetro médio das lesões em intervalos de dois dias, até oito dias após a inoculação. Os dados obtidos nos ensaios antifúngicos foram submetidos à análise de variância e comparados pelo teste Tukey (p≤0,05), utilizando o software estatístico SISVAR 5.6. Estudos sobre o gênero Dipteryx encontram-se mais restritos às espécies Dipteryx alata e Dipteryx odorata. Os maiores rendimentos dos extratos foram obtidos para os resíduos e sementes dos frutos. Os extratos das folhas, galhos, resíduos e sementes apresentaram as classes de terpenos, taninos condensados e hidrolisáveis, flavonoides e cumarina, bem como potencial ação antioxidante. Os extratos dos galhos e resíduos dos frutos de D. punctata e o padrão de cumarina, ocasionaram as maiores inibições no crescimento do fitopatógeno in vitro e in vivo, todos os extratos foram eficazes, com destaque para a cumarina e para as aplicações preventivas das concentrações testadas. Os resultados obtidos para os extratos são promissores e fontes de investigação para desenvolvimento futuro de produtos naturais visando o controle da antracnose de maneira mais sustentável. 2023-01-19T20:37:14Z 2023-01-19T20:37:14Z 2022-07-28 Thesis SOUSA, Bruna Cristine Martins de.Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará. Orientador: Thiago Almeida Vieira. Coorientadora: Denise Castro Lustosa. 2022. 171 f. Tese (Doutorado em Ciências Ambientais) - Programa de Pós-graduação em Sociedade, Natureza e Desenvolvimento, Universidade Federal do Oeste do Pará, Santarém, 2022. Disponível em: https://repositorio.ufopa.edu.br/jspui/handle/123456789/744 https://repositorio.ufopa.edu.br/jspui/handle/123456789/744 pt_BR Acesso Aberto application/pdf Universidade Federal do Oeste do Pará Brasil Programa de Pós-Graduação em Sociedade, Natureza e Desenvolvimento UFOPA Instituto de Biodiversidade e Florestas 1 CD-ROM
institution Repositório Institucional - Universidade Federa ldo Oeste do Pará - UFOPA
collection DSpace
language pt_BR
topic Cumaru
Extratos vegetais
Fitoquímica
Atividade antioxidante
Controle alternativo
CNPQ::Ciências Sociais Aplicadas
Recursos Naturais, Biodiversidade e Bioprospecção na Amazônia
spellingShingle Cumaru
Extratos vegetais
Fitoquímica
Atividade antioxidante
Controle alternativo
CNPQ::Ciências Sociais Aplicadas
Recursos Naturais, Biodiversidade e Bioprospecção na Amazônia
SOUSA, Bruna Cristine Martins de
Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará
topic_facet Cumaru
Extratos vegetais
Fitoquímica
Atividade antioxidante
Controle alternativo
CNPQ::Ciências Sociais Aplicadas
Recursos Naturais, Biodiversidade e Bioprospecção na Amazônia
description The genus Dipteryx harbors species known as cumaruzeiros, belonging to the Fabaceae family and originating in Central and South American countries. Among the species of this genus, Dipteryx odorata stands out historically in the Amazon, for the supply and commercialization of multiple products such as wood and seeds, used for the extraction of coumarin, the main active compound. The species Dipteryx punctata also has a wide distribution in the North region of Brazil, however, it lacks studies that detail its phytochemical composition and biological activities. In this sense, this work aimed to evaluate the chemical profile and the antioxidant and antifungal activities of ethanolic extracts of D. punctata. A systematic review was carried out on the genus Dipteryx using SciELO and the Brazilian Digital Library of Theses and Dissertations (BDTD) as databases. For chemical and biological evaluations, plant material was collected in five areas producing cumaru seeds, in Mojuí dos Campos, Pará. The extracts were obtained via Soxhlet, using 92.8% distilled ethanol as solvent, with a total duration of eight hours, calculating the final yield. Chemical analyzes of the extracts were performed by Thin Layer Chromatography (TLC), Gas Chromatography coupled to Mass Spectrometry (GCMS), and determination of phenolics and flavonoids. Antioxidant activity was performed by scavenging DPPH free radicals. The antifungal activity of the extracts was evaluated under in vitro and in vivo conditions. In the in vitro assay, the extracts and the coumarin standard were tested at concentrations: 10%, 20%, 30%, 40% and 50% (p: v), added in potato-dextrose-agar (PDA) medium, over the fungus Colletotrichum musae, the causal agent of anthracnose disease in bananas. The control consisted of fungal growth only in PDA medium. The experimental design was completely randomized (DCR), in a factorial scheme, with four replications. The evaluations were carried out by measuring the average diameter of the colonies, daily, for eight days. With the data from the colonies, the percentage of inhibition of growth (PIG), mycelial growth velocity index (MGVI) and the growth rate (Gr) were determined. In the in vivo assay, the extracts and coumarin were tested at concentrations of 40% and 50%, in preventive and curative applications. The experimental design was completely randomized (DCR), in a factorial scheme, with three replications. The evaluations were carried out by measuring the mean diameter of the lesions at intervals of two days, up to eight days after inoculation. The data obtained in the antifungal assays were submitted to analysis of variance and compared by the Tukey test (p≤0.05), using the statistical software SISVAR 5.6. Studies on the genus Dipteryx are more restricted to the species Dipteryx alata and Dipteryx odorata. The highest yields of extracts were obtained for residues and fruit seeds. The extracts from leaves, branches, residues and seeds presented the classes of terpenes, condensed and hydrolysable tannins, flavonoids and coumarin, as well as potential antioxidant action. The extracts from the branches and residues of the fruits of D. punctata and the coumarin pattern, caused the greatest inhibitions in the growth of the phytopathogen in vitro and in vivo, all extracts were effective, with emphasis on coumarin and for the preventive applications of concentrations tested. The results obtained for the extracts are promising and sources of investigation for the future development of natural products aimed at controlling anthracnose in a more sustainable way.
author_additional VIEIRA, Thiago Almeida
author_additionalStr VIEIRA, Thiago Almeida
format Tese
author SOUSA, Bruna Cristine Martins de
title Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará
title_short Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará
title_full Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará
title_fullStr Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará
title_full_unstemmed Composição química e atividade biológica de extratos de plantas de Dipteryx punctata (S.F. Blake) Amshoff oriundas de Mojuí dos Campos, Pará
title_sort composição química e atividade biológica de extratos de plantas de dipteryx punctata (s.f. blake) amshoff oriundas de mojuí dos campos, pará
publisher Universidade Federal do Oeste do Pará
publishDate 2023
url https://repositorio.ufopa.edu.br/jspui/handle/123456789/744
_version_ 1829179658811211776
score 11.755432