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Biblioteca(s):  Embrapa Pecuária Sudeste.
Data corrente:  25/11/2015
Data da última atualização:  15/03/2023
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  AMARAL, C. D. B.; AMAIS, R. S.; FIALHO, L. L.; SCHIAVO, D.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A.
Afiliação:  CLARICE D. B. AMARAL, UNIVERSIDADE FEDERAL DE SÃO CARLOS/SÃO CARLOS, SP; RENATA S. AMAIS, C CENTER FOR NUCLEAR ENERGY IN AGRICULTURE, UNIVERSITY OF SÃO PAULO, PIRACICABA, SP; LUCIMAR L. FIALHO, GROUP OF APPLIED INSTRUMENTAL ANALYSIS, DEPARTMENT OF CHEMISTRY, FEDERAL UNIVERSITY OF SÃO CARLOS; DANIELA SCHIAVO, Agilent Technologies Brazil; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOAQUIM A. NÓBREGA, GROUP OF APPLIED INSTRUMENTAL ANALYSIS, DEPARTMENT OF CHEMISTRY, FEDERAL UNIVERSITY OF SÃO CARLOS.
Título:  Determination of carbon in digested samples and amino acids by inductively coupled plasma tandem mass spectrometry.
Ano de publicação:  2015
Fonte/Imprenta:  Microchemical Journal, v. 122, n. 1, p. 29-32, 2015.
DOI:  10.1016/j.microc.2015.04.007
Idioma:  Inglês
Conteúdo:  Inductively coupled plasma mass spectrometer with a triple quadrupole (ICP-MS/MS) was employed to determine carbon from different sources such as plant digests, amino acids and peptides. Adequate precision, accuracy and sensitivity were obtained when using either single quadrupole or mass shift mode. Recoveries for carbon determination in plant digests ranged from 96 to 100%. Limits of detection were 0.42 and 0.17 mg L? 1 for 12C+ and 12C16O+, respectively, with calibration curves generated by using solutions prepared with oxalic acid. The determination of carbon and sulfur in amino acids and peptides showed that accuracy was better when measuring in O2 reaction mode. Additionally, C and S were simultaneously determined in cystine and glutathione by ICP-MS/MS mass-shift mode. The determination of carbon simultaneously with trace elements and target elements by ICP-MS makes this concept quite promising. Results demonstrated the potential of ICP-MS/MS for carbon determination.
Palavras-Chave:  Amino acids Mass; Carbon determination; ICP MS MS; Non metal determination; Shift mode.
Categoria do assunto:  W Química e Física
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Pecuária Sudeste (CPPSE)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CPPSE23149 - 1UPCAP - DDPROCI-2015.00088AMA2015.00088
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Biblioteca(s):  Embrapa Rondônia.
Data corrente:  16/09/2021
Data da última atualização:  16/09/2021
Tipo da produção científica:  Artigo em Periódico Indexado
Circulação/Nível:  A - 2
Autoria:  MORAIS, J. A. de; ROCHA, R. B.; ALVES, E. A.; ESPINDULA, M. C.; TEIXEIRA, A. L.; SOUZA, C. A. de.
Afiliação:  RODRIGO BARROS ROCHA, CPAF-RO; ENRIQUE ANASTACIO ALVES, CPAF-RO; MARCELO CURITIBA ESPINDULA, CPAF-RO; ALEXSANDRO LARA TEIXEIRA, CPAF-RO.
Título:  Beverage quality of Coffea canephora genotypes in the western Amazon, Brazil.
Ano de publicação:  2021
Fonte/Imprenta:  Acta Scientiarum. Agronomy, v. 43, e52095, 2021.
ISSN:  1807-8621
DOI:  10.4025/actasciagron.v43i1.52095
Idioma:  Inglês
Conteúdo:  This study aimed to evaluate the beverage quality of Coffea canephora genotypes in different environments of the western Amazon to assist plant selection and new cultivar development. To analyze beverage quality, samples of cherry coffee beans were collected separately for each genotype from clonal competition trials installed in the municipalities of Ouro Preto do Oeste, Alta Floresta do Oeste, Porto Velho, and Ariquemes in Rondônia State and Rio Branco in Acre State (Brazil). The beverage quality was assessed using the Robusta Cupping Protocol, which attribute to each genotype a score in a range from 0 to 100, highlighting nuances. Analysis of variance and principal components using reference points were used to quantify genotype x environment interaction (G x E). The analysis of variance indicated that genotypic and G x E interaction effects were significant (p < 0.01). By using a centroid dispersion method, we could identify four clones of low, eight of specific (to favorable or unfavorable environments), and seven of broad adaptability to the environments. The clones BRS 2314, 11, and 17 had average quality scores above 80 in all environments, with potential for specialty coffee production. The clones BRS 1216, BRS 3220, and BRS 3193 presented unstable behavior, with beans of higher quality in some of the evaluated environments. Such inconsistency in clone behavior is caused by unpredictable changes in plant performance in different environments. Our results indicate th... Mostrar Tudo
Palavras-Chave:  Conilon; Genotype x environments interaction; Robusta.
Categoria do assunto:  --
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226081/1/8203Beverage-quality-of-Coffea-canephora-genotypes-in-the-western-Amazon-Brazil.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Rondônia (CPAF-RO)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CPAF-RO18596 - 1UPCAP - DD
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