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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
05/10/2010 |
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Data da última atualização: |
07/12/2010 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
VERONA, L. A. F.; NEZELLO, R.; BRUGNARA, E. C.; ANTUNES, L. E. C.; SCHWENGBER, J. E. |
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Afiliação: |
L. A. F. VERONA, EPAGRI; R. NEZELLO; E. C. BRUGNARA, EPAGRI; LUIS EDUARDO CORREA ANTUNES, CPACT; JOSE ERNANI SCHWENGBER, CPACT. |
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Título: |
Competição de cultivares de morangueiro em sistema de transição para produção orgânica. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: SIMPÓSIO NACIONAL DO MORANGO, 5.; ENCONTRO SOBRE PEQUENAS FRUTAS E FRUTAS NATIVAS DO MERCOSUL, 4., 2010, Pelotas. Palestras e resumos... Pelotas: Embrapa Clima Temperado, 2010. |
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Páginas: |
p. 169 |
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Idioma: |
Português |
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Palavras-Chave: |
Morangueiro. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00664naa a2200181 a 4500
001 1863605
005 2010-12-07
008 2010 bl uuuu u00u1 u #d
100 1 $aVERONA, L. A. F.
245 $aCompetição de cultivares de morangueiro em sistema de transição para produção orgânica.
260 $c2010
300 $ap. 169
653 $aMorangueiro
700 1 $aNEZELLO, R.
700 1 $aBRUGNARA, E. C.
700 1 $aANTUNES, L. E. C.
700 1 $aSCHWENGBER, J. E.
773 $tIn: SIMPÓSIO NACIONAL DO MORANGO, 5.; ENCONTRO SOBRE PEQUENAS FRUTAS E FRUTAS NATIVAS DO MERCOSUL, 4., 2010, Pelotas. Palestras e resumos... Pelotas: Embrapa Clima Temperado, 2010.
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
03/03/2017 |
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Data da última atualização: |
03/03/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
COSTA, M. C. A.; MATALLO, M. B.; FERREIRA, M. M. C.; QUEIROZ, S. C. do N. de; ALMEIDA, S. D. B.; FRANCO, D. A. S. |
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Afiliação: |
MARIA CRISTINA ANDREAZZA COSTA, IQ-UNICAMP; MARCUS BARIFOUSE MATALLO, Instituto Biológico; MARCIA MIGUEL CASTRO FERREIRA, IQ-UNICAMP; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA; SIDNEY D B ALMEIDA, Instituto Biológico; DANIEL ANDRADE SIQUEIRA FRANCO, APTA Campinas. |
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Título: |
Brachiaria plantaginea as a potential (new) source of shikimic acid: quantification by NIR and PLS regression. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Planta Medica Letters, v. 4, p. e81-e86, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Shikimic acid is a natural organic compound produced in the biochemical pathways of eukaryotic organisms and is generally utilized as a starting material of the antiviral drug Oseltamivir (Tamiflu®). This study shows the results of shikimic acid accumulation in Brachiaria plantaginea, an abundant, grassy plant found in Brazil and other countries in Africa and America, after glyphosate spraying at three different doses. B. plantaginea plants harvested after 6 days of exposure to the herbicide showed that shikimic acid accumulation increased by 345%, on average, compared to unsprayed plants. The combination of near infrared spectroscopy and multivariate analysis using partial least square regression was applied for the quantification of shikimic acid in B. plantaginea. Spectra of 44 samples were obtained using the diffuse reflectance mode in the range of 4000 to 10000 cm-1 with 4 cm-1 resolution. Different mathematical pretreatments were applied to the spectra. As preprocessing, the data were mean-centered. The calibration model with seven factors on twenty-nine samples (training set) exhibited a coefficient of determination =0.9930 and a standard error of calibration =84.05. For external validation (11 samples on the test set), the coefficient of determination =0.9317 and the standard error of prediction =154.91. The percent calibration error range was 1 to 10% for most of the samples and only two samples presented an error greater than 20%. For external validation, the mean prediction error was 10% and the range error ratio was 9.42, indicating that the model is qualified for screening calibration. MenosAbstract: Shikimic acid is a natural organic compound produced in the biochemical pathways of eukaryotic organisms and is generally utilized as a starting material of the antiviral drug Oseltamivir (Tamiflu®). This study shows the results of shikimic acid accumulation in Brachiaria plantaginea, an abundant, grassy plant found in Brazil and other countries in Africa and America, after glyphosate spraying at three different doses. B. plantaginea plants harvested after 6 days of exposure to the herbicide showed that shikimic acid accumulation increased by 345%, on average, compared to unsprayed plants. The combination of near infrared spectroscopy and multivariate analysis using partial least square regression was applied for the quantification of shikimic acid in B. plantaginea. Spectra of 44 samples were obtained using the diffuse reflectance mode in the range of 4000 to 10000 cm-1 with 4 cm-1 resolution. Different mathematical pretreatments were applied to the spectra. As preprocessing, the data were mean-centered. The calibration model with seven factors on twenty-nine samples (training set) exhibited a coefficient of determination =0.9930 and a standard error of calibration =84.05. For external validation (11 samples on the test set), the coefficient of determination =0.9317 and the standard error of prediction =154.91. The percent calibration error range was 1 to 10% for most of the samples and only two samples presented an error greater than 20%. For external validation,... Mostrar Tudo |
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Palavras-Chave: |
NIR spectroscopy; PLS regression. |
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Thesagro: |
Brachiaria plantaginea; Gramínea. |
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Thesaurus NAL: |
Chemometrics; Shikimic acid. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/157006/1/2016AA51.pdf
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Marc: |
LEADER 02402naa a2200253 a 4500
001 2066054
005 2017-03-03
008 2016 bl uuuu u00u1 u #d
100 1 $aCOSTA, M. C. A.
245 $aBrachiaria plantaginea as a potential (new) source of shikimic acid$bquantification by NIR and PLS regression.$h[electronic resource]
260 $c2016
520 $aAbstract: Shikimic acid is a natural organic compound produced in the biochemical pathways of eukaryotic organisms and is generally utilized as a starting material of the antiviral drug Oseltamivir (Tamiflu®). This study shows the results of shikimic acid accumulation in Brachiaria plantaginea, an abundant, grassy plant found in Brazil and other countries in Africa and America, after glyphosate spraying at three different doses. B. plantaginea plants harvested after 6 days of exposure to the herbicide showed that shikimic acid accumulation increased by 345%, on average, compared to unsprayed plants. The combination of near infrared spectroscopy and multivariate analysis using partial least square regression was applied for the quantification of shikimic acid in B. plantaginea. Spectra of 44 samples were obtained using the diffuse reflectance mode in the range of 4000 to 10000 cm-1 with 4 cm-1 resolution. Different mathematical pretreatments were applied to the spectra. As preprocessing, the data were mean-centered. The calibration model with seven factors on twenty-nine samples (training set) exhibited a coefficient of determination =0.9930 and a standard error of calibration =84.05. For external validation (11 samples on the test set), the coefficient of determination =0.9317 and the standard error of prediction =154.91. The percent calibration error range was 1 to 10% for most of the samples and only two samples presented an error greater than 20%. For external validation, the mean prediction error was 10% and the range error ratio was 9.42, indicating that the model is qualified for screening calibration.
650 $aChemometrics
650 $aShikimic acid
650 $aBrachiaria plantaginea
650 $aGramínea
653 $aNIR spectroscopy
653 $aPLS regression
700 1 $aMATALLO, M. B.
700 1 $aFERREIRA, M. M. C.
700 1 $aQUEIROZ, S. C. do N. de
700 1 $aALMEIDA, S. D. B.
700 1 $aFRANCO, D. A. S.
773 $tPlanta Medica Letters$gv. 4, p. e81-e86, 2016.
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Embrapa Meio Ambiente (CNPMA) |
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