Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp.
Ano de defesa: | 2023 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso embargado |
Idioma: | por |
Instituição de defesa: |
Universidade Estadual da Paraíba
|
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Química - PPGQ
|
Departamento: |
Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://tede.bc.uepb.edu.br/jspui/handle/tede/4734 |
Resumo: | The sisal fiber, Agave sisalana, can be used for various purposes, including primarily industrial applications and crafts. However, only 3% to 5% of the leaf material is utilized as fiber, while co-products such as liquid fraction, mucilage, and pulp are discarded. After leaf processing, the residues undergo rapid fermentation, causing an increase in acidity in the liquid fraction, which hinders value addition. For the liquid extracts, acidity determination is a critical variable due to fermentation, mass loss, color changes, pH, and conductivity alterations. With the aim of enabling new applications for the sisal liquid fraction, this study aimed to develop strategies for applying Near Infrared (NIR) spectroscopy and chemometrics for predicting acidity in the liquid fraction and classifying Agave spp. genotypes. To achieve this, 40 samples were collected from six genotypes, with seven plants per genotype. The plant leaves were processed to obtain the liquid extract. Physical and chemical determinations were performed on the samples in their natural state and after treating the extract with a chemical preservative. Electric conductivity, pH, and mass loss were measured daily for 51 days. Subsequently, total acidity was determined through conventional methods, and NIR spectra were acquired. Based on Principal Component Analysis (PCA), the trend of distinction among the studied genotypes was evaluated. PCA results indicated that genotypes A, C, and F (1, 7, and 15) have distinct compositions. Supervised pattern recognition models using Linear Discriminant Analysis (LDA) and the Ant Colony Optimization (ACO) algorithm for variable selection achieved a classification rate exceeding 90%. For the models constructed to determine acidity using VIS-NIR spectra and the iPLS and iSPA-PLS algorithms, a satisfactory predictive capacity was attained, with Root Mean Square Error of Prediction (RMSEP) values of 0.870 and 0.771 mg NaOH/mL, prediction correlation coefficients (rpred) of 0.873 and 0.771, and Relative Error in Prediction (REP) of 8.408 and 10.765% for iPLS and iSPA-PLS, respectively. In light of the above, it can be affirmed that the application of NIR technology presents a fast, efficient, and accurate technique for acidity determination and classification of Agave spp. genotypes. |
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Simões, Simone da Silvahttp://lattes.cnpq.br/8054994629202655Medeiros, Everaldo Paulo dehttp://lattes.cnpq.br/0883967020061181Diniz, Paulo Henrique Gonçalves Diashttp://lattes.cnpq.br/6127798396853765Gondim, Tarcísio Marcos de Souzahttp://lattes.cnpq.br/8509360733243160http://lattes.cnpq.br/2260388490805300Dias Junior, Joabel Freire2023-08-25T11:31:38Z2999-12-312023-07-25DIAS JUNIOR, Joabel Freire. Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. 2023. 77 f. Dissertação (Programa de Pós-Graduação em Química - PPGQ) - Universidade Estadual da Paraíba, Campina Grande, 2023.http://tede.bc.uepb.edu.br/jspui/handle/tede/4734The sisal fiber, Agave sisalana, can be used for various purposes, including primarily industrial applications and crafts. However, only 3% to 5% of the leaf material is utilized as fiber, while co-products such as liquid fraction, mucilage, and pulp are discarded. After leaf processing, the residues undergo rapid fermentation, causing an increase in acidity in the liquid fraction, which hinders value addition. For the liquid extracts, acidity determination is a critical variable due to fermentation, mass loss, color changes, pH, and conductivity alterations. With the aim of enabling new applications for the sisal liquid fraction, this study aimed to develop strategies for applying Near Infrared (NIR) spectroscopy and chemometrics for predicting acidity in the liquid fraction and classifying Agave spp. genotypes. To achieve this, 40 samples were collected from six genotypes, with seven plants per genotype. The plant leaves were processed to obtain the liquid extract. Physical and chemical determinations were performed on the samples in their natural state and after treating the extract with a chemical preservative. Electric conductivity, pH, and mass loss were measured daily for 51 days. Subsequently, total acidity was determined through conventional methods, and NIR spectra were acquired. Based on Principal Component Analysis (PCA), the trend of distinction among the studied genotypes was evaluated. PCA results indicated that genotypes A, C, and F (1, 7, and 15) have distinct compositions. Supervised pattern recognition models using Linear Discriminant Analysis (LDA) and the Ant Colony Optimization (ACO) algorithm for variable selection achieved a classification rate exceeding 90%. For the models constructed to determine acidity using VIS-NIR spectra and the iPLS and iSPA-PLS algorithms, a satisfactory predictive capacity was attained, with Root Mean Square Error of Prediction (RMSEP) values of 0.870 and 0.771 mg NaOH/mL, prediction correlation coefficients (rpred) of 0.873 and 0.771, and Relative Error in Prediction (REP) of 8.408 and 10.765% for iPLS and iSPA-PLS, respectively. In light of the above, it can be affirmed that the application of NIR technology presents a fast, efficient, and accurate technique for acidity determination and classification of Agave spp. genotypes.A fibra do sisal, Agave sisalana, pode ser utilizada para diversos fins incluindo principalmente aplicações industriais e artesanato. No entanto, apenas 3% a 5% do material foliar é aproveitado como fibra, sendo os coprodutos, como a fração líquida, mucilagem e bucha, descartados. Após o beneficiamento das folhas, os resíduos são rapidamente fermentados causando um aumento da acidez na fração líquida, o que inviabiliza a agregação de valor. Para os extratos líquidos, a determinação da acidez é uma variável crítica devido a fermentação, perda de massa, alterações na cor, pH, condutividade. Com o propósito de permitir novas aplicações para a fração líquida do sisal, este trabalho objetivou desenvolver estratégias de aplicação da espectroscopia NIR (do inglês: Near Infrared) e quimiometria para a predição da acidez na fração líquida, e classificação de genótipos de Agave spp. Para isto foram coletadas 40 amostras obtidas de seis genótipos, considerando sete plantas por genótipos. As folhas das plantas foram beneficiadas e processadas para a coleta do extrato líquido. As determinações físico-químicas foram realizadas nas amostras in natura e após tratamento do extrato com o uso de conservante químico. Foram medidas a condutividade elétrica, o pH e a perda de massa dessas amostras diariamente durante 51 dias. Em seguida, determinou-se a acidez total por método convencional, e a adquiriu-se os espectros NIR. Com base na PCA (análise em componentes principais), foi avaliada a tendência de distinção entre os genótipos estudados. Os resultados da PCA indicaram que os genótipos A, C e F (1, 7 e 15) são diferentes em sua composição. Os modelos de reconhecimento de padrões supervisionados utilizando LDA (análise discriminante linear) e o algoritmo ACO (colônia de formigas) para seleção de variáveis, alcançou uma taxa de classificação correta superior a 90%. Para os modelos construídos para a determinação da acidez, utilizando os espectros VIS-NIR e os algoritmos iPLS e iSPA-PLS alcançou-se uma capacidade preditiva satisfatória, com valores de RMSEP de 0,870 e 0,771 mg NaOH/mL, rpred de 0,873 e 0,771 e REP de 8,408 e 10,765 % para iPLS e iSPA-PLS, respectivamente. Diante do exposto pode-se afirmar que aplicação da tecnologia NIR apresenta para a determinação da acidez e classificação de genótipos de Agave spp. uma técnica rápida, eficiente e precisa.Submitted by Joabel Junior (joabel.junior@aluno.uepb.edu.br) on 2023-08-25T02:14:17Z No. of bitstreams: 2 DS - Joabel Freire Dias Junior.pdf: 5243808 bytes, checksum: 672ddd47eb460343418f349a4c0422d4 (MD5) Termo de Depósito BDTD.pdf: 248743 bytes, checksum: ef84442f9898e3d99c839ad9dd1953c8 (MD5)Approved for entry into archive by Jean Medeiros (jeanletras@uepb.edu.br) on 2023-08-25T11:10:25Z (GMT) No. of bitstreams: 2 DS - Joabel Freire Dias Junior.pdf: 5243808 bytes, checksum: 672ddd47eb460343418f349a4c0422d4 (MD5) Termo de Depósito BDTD.pdf: 248743 bytes, checksum: ef84442f9898e3d99c839ad9dd1953c8 (MD5)Made available in DSpace on 2023-08-25T11:31:38Z (GMT). No. of bitstreams: 2 DS - Joabel Freire Dias Junior.pdf: 5243808 bytes, checksum: 672ddd47eb460343418f349a4c0422d4 (MD5) Termo de Depósito BDTD.pdf: 248743 bytes, checksum: ef84442f9898e3d99c839ad9dd1953c8 (MD5) Previous issue date: 2023-07-25Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Estadual da ParaíbaPrograma de Pós-Graduação em Química - PPGQUEPBBrasilPró-Reitoria de Pós-Graduação e Pesquisa - PRPGPEspectroscopiaFibra de sisalQuimiometriaSpectroscopyChemometricsCIENCIAS EXATAS E DA TERRA::QUIMICAAplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp.Application of NIR spectroscopy and chemometrics for phenotyping and genotyping studies of Agave spp.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-79317878423444719666006006005248714503811102781571700325303117195info:eu-repo/semantics/embargoedAccessreponame:Biblioteca Digital de Teses e Dissertações da UEPBinstname:Universidade Estadual da Paraíba (UEPB)instacron:UEPBORIGINALDS - Joabel Freire Dias Junior.pdfDS - Joabel Freire Dias Junior.pdfapplication/pdf5243808http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4734/2/DS+-+Joabel+Freire+Dias+Junior.pdf672ddd47eb460343418f349a4c0422d4MD52Termo de Depósito BDTD.pdfTermo de Depósito BDTD.pdfapplication/pdf248743http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4734/3/Termo+de+Dep%C3%B3sito+BDTD.pdfef84442f9898e3d99c839ad9dd1953c8MD53LICENSElicense.txtlicense.txttext/plain; charset=utf-81960http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4734/1/license.txt6052ae61e77222b2086e666b7ae213ceMD51tede/47342023-08-25 08:32:11.404oai:tede.bc.uepb.edu.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede.bc.uepb.edu.br/jspui/PUBhttp://tede.bc.uepb.edu.br/oai/requestbc@uepb.edu.br||opendoar:2023-08-25T11:32:11Biblioteca Digital de Teses e Dissertações da UEPB - Universidade Estadual da Paraíba (UEPB)false |
dc.title.por.fl_str_mv |
Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. |
dc.title.alternative.eng.fl_str_mv |
Application of NIR spectroscopy and chemometrics for phenotyping and genotyping studies of Agave spp. |
title |
Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. |
spellingShingle |
Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. Dias Junior, Joabel Freire Espectroscopia Fibra de sisal Quimiometria Spectroscopy Chemometrics CIENCIAS EXATAS E DA TERRA::QUIMICA |
title_short |
Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. |
title_full |
Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. |
title_fullStr |
Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. |
title_full_unstemmed |
Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. |
title_sort |
Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. |
author |
Dias Junior, Joabel Freire |
author_facet |
Dias Junior, Joabel Freire |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Simões, Simone da Silva |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8054994629202655 |
dc.contributor.advisor-co1.fl_str_mv |
Medeiros, Everaldo Paulo de |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/0883967020061181 |
dc.contributor.referee1.fl_str_mv |
Diniz, Paulo Henrique Gonçalves Dias |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/6127798396853765 |
dc.contributor.referee2.fl_str_mv |
Gondim, Tarcísio Marcos de Souza |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/8509360733243160 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2260388490805300 |
dc.contributor.author.fl_str_mv |
Dias Junior, Joabel Freire |
contributor_str_mv |
Simões, Simone da Silva Medeiros, Everaldo Paulo de Diniz, Paulo Henrique Gonçalves Dias Gondim, Tarcísio Marcos de Souza |
dc.subject.por.fl_str_mv |
Espectroscopia Fibra de sisal Quimiometria |
topic |
Espectroscopia Fibra de sisal Quimiometria Spectroscopy Chemometrics CIENCIAS EXATAS E DA TERRA::QUIMICA |
dc.subject.eng.fl_str_mv |
Spectroscopy Chemometrics |
dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::QUIMICA |
description |
The sisal fiber, Agave sisalana, can be used for various purposes, including primarily industrial applications and crafts. However, only 3% to 5% of the leaf material is utilized as fiber, while co-products such as liquid fraction, mucilage, and pulp are discarded. After leaf processing, the residues undergo rapid fermentation, causing an increase in acidity in the liquid fraction, which hinders value addition. For the liquid extracts, acidity determination is a critical variable due to fermentation, mass loss, color changes, pH, and conductivity alterations. With the aim of enabling new applications for the sisal liquid fraction, this study aimed to develop strategies for applying Near Infrared (NIR) spectroscopy and chemometrics for predicting acidity in the liquid fraction and classifying Agave spp. genotypes. To achieve this, 40 samples were collected from six genotypes, with seven plants per genotype. The plant leaves were processed to obtain the liquid extract. Physical and chemical determinations were performed on the samples in their natural state and after treating the extract with a chemical preservative. Electric conductivity, pH, and mass loss were measured daily for 51 days. Subsequently, total acidity was determined through conventional methods, and NIR spectra were acquired. Based on Principal Component Analysis (PCA), the trend of distinction among the studied genotypes was evaluated. PCA results indicated that genotypes A, C, and F (1, 7, and 15) have distinct compositions. Supervised pattern recognition models using Linear Discriminant Analysis (LDA) and the Ant Colony Optimization (ACO) algorithm for variable selection achieved a classification rate exceeding 90%. For the models constructed to determine acidity using VIS-NIR spectra and the iPLS and iSPA-PLS algorithms, a satisfactory predictive capacity was attained, with Root Mean Square Error of Prediction (RMSEP) values of 0.870 and 0.771 mg NaOH/mL, prediction correlation coefficients (rpred) of 0.873 and 0.771, and Relative Error in Prediction (REP) of 8.408 and 10.765% for iPLS and iSPA-PLS, respectively. In light of the above, it can be affirmed that the application of NIR technology presents a fast, efficient, and accurate technique for acidity determination and classification of Agave spp. genotypes. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-08-25T11:31:38Z |
dc.date.issued.fl_str_mv |
2023-07-25 |
dc.date.available.fl_str_mv |
2999-12-31 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
DIAS JUNIOR, Joabel Freire. Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. 2023. 77 f. Dissertação (Programa de Pós-Graduação em Química - PPGQ) - Universidade Estadual da Paraíba, Campina Grande, 2023. |
dc.identifier.uri.fl_str_mv |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4734 |
identifier_str_mv |
DIAS JUNIOR, Joabel Freire. Aplicação da espectroscopia NIR e quimiometria para estudos de fenotipagem e de genótipos de Agave spp. 2023. 77 f. Dissertação (Programa de Pós-Graduação em Química - PPGQ) - Universidade Estadual da Paraíba, Campina Grande, 2023. |
url |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4734 |
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Universidade Estadual da Paraíba |
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UEPB |
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Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP |
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Universidade Estadual da Paraíba |
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