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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
22/12/2017 |
Data da última atualização: |
22/12/2017 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
HELM, C. V.; RUIZ, H. Z.; MIRANDA, A. C. de; WENDLING, I.; LIZ, M. V. de. |
Afiliação: |
CRISTIANE VIEIRA HELM, CNPF; HENRIQUE ZAVATTIERI RUIZ, Graduando da UTFPR; AMANDA COELHO DE MIRANDA, Graduanda da UTFPR; IVAR WENDLING, CNPF; MARCUS VINICIUS DE LIZ, UTFPR. |
Título: |
Metilxantinas e compostos fenólicos em amostras de erva-mate. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
In: ENCONTRO NACIONAL DE QUÍMICA AMBIENTAL, 8., 2017, Curitiba. O químico e os desafios ambientais na sociedade atual: resumos e trabalhos completos. Curitiba: UTFPR, 2017. |
Páginas: |
p. 562-566. |
Idioma: |
Português |
Conteúdo: |
Currently Brazil is one of the largest producers of yerba mate (Ilex paraguariensis St. Hill) with most of the commercial production in plantations without genetic improvement or extraction into areas of natural occurrence. The production and accumulation of compounds of interest such as methylxanthines and phenolic compounds can vary by genetic factors as by environmental factors. This study aimed to quantify the levels of caffeine and theobromine by high-performance liquid chromatography and total phenolic, Folin Ciocalteu method, in extracts prepared by the infusion of dried and crushed leaves in boiling water from the 52 yerba mate progenies, 49 coming from Ivaí / PR and 3 grown at Embrapa Forests. The maximum level of caffeine found 2.39 g/100 g of dry leaf, theobromine 1.56 g/ 100 g and phenolic compounds 13.38 g/100g. In 4 samples evaluated the concentration of the methylxantine theobromine was below the limit of quantification, the minimum content of caffeine was found to be 0.01 g/100g and a minimum amount of phenolic compounds was 6.65 g /100g. |
Palavras-Chave: |
Erva mate; Polifenois. |
Thesagro: |
Cafeína; Espécie nativa; Ilex Paraguariensis; Teobromina. |
Thesaurus Nal: |
Caffeine; Polyphenols; Theobromine. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/169730/1/2017-CrisH-ENQA-Metilxantinas.pdf
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Marc: |
LEADER 01933nam a2200277 a 4500 001 2083416 005 2017-12-22 008 2017 bl uuuu u00u1 u #d 100 1 $aHELM, C. V. 245 $aMetilxantinas e compostos fenólicos em amostras de erva-mate.$h[electronic resource] 260 $aIn: ENCONTRO NACIONAL DE QUÍMICA AMBIENTAL, 8., 2017, Curitiba. O químico e os desafios ambientais na sociedade atual: resumos e trabalhos completos. Curitiba: UTFPR$c2017 300 $ap. 562-566. 520 $aCurrently Brazil is one of the largest producers of yerba mate (Ilex paraguariensis St. Hill) with most of the commercial production in plantations without genetic improvement or extraction into areas of natural occurrence. The production and accumulation of compounds of interest such as methylxanthines and phenolic compounds can vary by genetic factors as by environmental factors. This study aimed to quantify the levels of caffeine and theobromine by high-performance liquid chromatography and total phenolic, Folin Ciocalteu method, in extracts prepared by the infusion of dried and crushed leaves in boiling water from the 52 yerba mate progenies, 49 coming from Ivaí / PR and 3 grown at Embrapa Forests. The maximum level of caffeine found 2.39 g/100 g of dry leaf, theobromine 1.56 g/ 100 g and phenolic compounds 13.38 g/100g. In 4 samples evaluated the concentration of the methylxantine theobromine was below the limit of quantification, the minimum content of caffeine was found to be 0.01 g/100g and a minimum amount of phenolic compounds was 6.65 g /100g. 650 $aCaffeine 650 $aPolyphenols 650 $aTheobromine 650 $aCafeína 650 $aEspécie nativa 650 $aIlex Paraguariensis 650 $aTeobromina 653 $aErva mate 653 $aPolifenois 700 1 $aRUIZ, H. Z. 700 1 $aMIRANDA, A. C. de 700 1 $aWENDLING, I. 700 1 $aLIZ, M. V. de
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Registro original: |
Embrapa Florestas (CNPF) |
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Registros recuperados : 7 | |
5. | | LIMA, G. G. de; RUIZ, H. Z.; MATOS, M.; HELM, C. V.; LIZ, M. V. de; MAGALHAES, W. L. E. Prediction of yerba mate caffeine content using near infrared spectroscopy. Spectroscopy Letters, v. 52, n. 5, p. 282-287, 2019.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Florestas. |
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6. | | BENEDITO, D. C. D.; STUEPP, C. A.; HELM, C. V.; LIZ, M. V. de; MIRANDA, A. C. de; IMOSKI, R.; LAVORANTI, O. J.; WENDLING, I. Bioactive compounds concentrations and stability in leaves of Ilex paraguariensis genotypes. Forests, v. 14, n. 12, p. 1-18, 2023.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Florestas. |
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7. | | RAKOCEVIC, M.; MAIA, A. de H. N.; LIZ, M. V. de; IMOSKI, R.; HELM, C. V.; CARDOZO JUNIOR, E. L.; WENDLING, I. Stability of leaf yerba mate (Ilex paraguariensis) metabolite concentrations over the time from the prism of secondary Sexual dimorphism. Plants, v. 12, n. 11, article 2199, 2023.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 4 |
Biblioteca(s): Embrapa Florestas; Embrapa Meio Ambiente. |
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Registros recuperados : 7 | |
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