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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
29/10/2009 |
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Data da última atualização: |
23/02/2010 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, L. A. de; KIMURA, M.; PEREIRA, M. E. C.; FUKUDA, W. M. G.; SILVEIRA JUNIOR, P. B. da. |
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Afiliação: |
LUCIANA ALVES DE OLIVEIRA, CNPMF; Mieko Kimura, UNESP; MARCIO EDUARDO CANTO PEREIRA, CNPMF; WANIA MARIA GONCALVES FUKUDA, CNPMF; Pedro Belchior da Silveira Junior, UNESP. |
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Título: |
Avaliação do conteúdo de carotenóides e compostos cianogênicos em híbridos de mandioca. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Revista Raízes e Amidos Tropicais, Botucatu, v. 5, p. 805-809, jul. 2009. 1 CD-ROM. |
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Idioma: |
Português |
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Notas: |
Edição dos Anais do XIII Congresso Brasileiro de Mandioca; VII Workshop sobre Tecnologia em Agroindústrias de Tuberosas Tropicais. Botucatu, jul. 2009. |
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Conteúdo: |
Dando continuidade ao programa de melhoramento genético do Embrapa Mandioca e
Fruticultura Tropical (CNPMF) que visa a obtenção de variedades de mandioca de mesa com alto teor de pró-vitamina A, este trabalho teve como objetivo avaliar o teor de carotenóides totais, b-caroteno e compostos cianogênicos de híbridos das Famílias 2003 e 2004. Dos 28 híbridos da Família 2003 avaliados nos anos de 2005, 2007 e 2008, 11 apresentaram teor de b-caroteno entre 7 e 10 µg/g de mandioca fresca e 25, conteúdo de compostos cianogênicos menor do que 100 ppm de HCN. Na Família 2004, dos 44 híbridos avaliados nos anos de 2006 e 2008, oito apresentaram concentração de b-caroteno em torno de 7 µg/g de mandioca fresca e 13, compostos cianogênicos menor do que 100 ppm de HCN. Quando avaliados com relação ao teor b-caroteno e concentração de compostos cianogênicos simultaneamente, 10 híbridos da Família 2003 e sete da Família 2004 mostraram-se com qualidades apropriadas para serem consumidas como mandioca de mesa e com alto teor b- caroteno. |
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Palavras-Chave: |
B-caroteno; Glicosídeos cianogênicos; Pró-vitamina A. |
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Thesagro: |
Manihot Esculenta. |
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Thesaurus Nal: |
cassava. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01934naa a2200241 a 4500
001 1656184
005 2010-02-23
008 2009 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, L. A. de
245 $aAvaliação do conteúdo de carotenóides e compostos cianogênicos em híbridos de mandioca.
260 $c2009
500 $aEdição dos Anais do XIII Congresso Brasileiro de Mandioca; VII Workshop sobre Tecnologia em Agroindústrias de Tuberosas Tropicais. Botucatu, jul. 2009.
520 $aDando continuidade ao programa de melhoramento genético do Embrapa Mandioca e Fruticultura Tropical (CNPMF) que visa a obtenção de variedades de mandioca de mesa com alto teor de pró-vitamina A, este trabalho teve como objetivo avaliar o teor de carotenóides totais, b-caroteno e compostos cianogênicos de híbridos das Famílias 2003 e 2004. Dos 28 híbridos da Família 2003 avaliados nos anos de 2005, 2007 e 2008, 11 apresentaram teor de b-caroteno entre 7 e 10 µg/g de mandioca fresca e 25, conteúdo de compostos cianogênicos menor do que 100 ppm de HCN. Na Família 2004, dos 44 híbridos avaliados nos anos de 2006 e 2008, oito apresentaram concentração de b-caroteno em torno de 7 µg/g de mandioca fresca e 13, compostos cianogênicos menor do que 100 ppm de HCN. Quando avaliados com relação ao teor b-caroteno e concentração de compostos cianogênicos simultaneamente, 10 híbridos da Família 2003 e sete da Família 2004 mostraram-se com qualidades apropriadas para serem consumidas como mandioca de mesa e com alto teor b- caroteno.
650 $acassava
650 $aManihot Esculenta
653 $aB-caroteno
653 $aGlicosídeos cianogênicos
653 $aPró-vitamina A
700 1 $aKIMURA, M.
700 1 $aPEREIRA, M. E. C.
700 1 $aFUKUDA, W. M. G.
700 1 $aSILVEIRA JUNIOR, P. B. da
773 $tRevista Raízes e Amidos Tropicais, Botucatu$gv. 5, p. 805-809, jul. 2009. 1 CD-ROM.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
07/03/2013 |
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Data da última atualização: |
07/03/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
GOMES, R. da C.; MEYER, P. M.; CASTRO, A. L. de; NETTO, A. S.; RODRIGUES, P. H. M. |
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Afiliação: |
RODRIGO DA COSTA GOMES, CNPGC; Paula Marques Meyer, IBGE; Ari Luiz de Castro, Departamento de Nutrição e Produção Animal, FMVZ/USP.; Arlindo Saran Netto, Departamento de Zootecnia, FZEA/USP; Paulo Henrique Mazza Rodrigues, Departamento de Nutrição e Produção Animal, FMVZ/USP. |
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Título: |
Accuracy, precision and robustness of different methods to obtain samples from silages in fermentation studies. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v.41, n.6, p.1369-1377, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to evaluate accuracy, precision and robustness of two methods to obtain silage samples, in comparison with extraction of liquor by manual screw-press. Wet brewery residue alone or combined with soybean hulls and citrus pulp were ensiled in laboratory silos. Liquor was extracted by a manual screw-press and a 2-mL aliquot was fixed with 0.4 mL formic acid. Two 10-g silage samples from each silo were diluted in 20 mL deionized water or 17% formic acid solution (alternative methods). Aliquots obtained by the three methods were used to determine the silage contents of fermentation end-products. The accuracy of the alternative methods was evaluated by comparing mean bias of estimates obtained by manual screw-press and by alternative methods, whereas precision was assessed by the root mean square prediction error and the residual error. Robustness was determined by studying the interaction between bias and chemical components, pH, in vitro dry matter digestibility (IVDMD) and buffer capacity. The 17% formic acid method was more accurate for estimating acetic, butyric and lactic acids, although it resulted in low overestimates of propionic acid and underestimates of ethanol. The deionized water method overestimated acetic and propionic acids and slightly underestimated ethanol. The 17% formic acid method was more precise than deionized water for estimating all organic acids and ethanol. The robustness of each method with respect to variation in the silage chemical composition, IVDMD and pH is dependent on the fermentation end-product at evaluation. The robustness of the alternative methods seems to be critical at the determination of lactic acid and ethanol contents. MenosThe objective of this study was to evaluate accuracy, precision and robustness of two methods to obtain silage samples, in comparison with extraction of liquor by manual screw-press. Wet brewery residue alone or combined with soybean hulls and citrus pulp were ensiled in laboratory silos. Liquor was extracted by a manual screw-press and a 2-mL aliquot was fixed with 0.4 mL formic acid. Two 10-g silage samples from each silo were diluted in 20 mL deionized water or 17% formic acid solution (alternative methods). Aliquots obtained by the three methods were used to determine the silage contents of fermentation end-products. The accuracy of the alternative methods was evaluated by comparing mean bias of estimates obtained by manual screw-press and by alternative methods, whereas precision was assessed by the root mean square prediction error and the residual error. Robustness was determined by studying the interaction between bias and chemical components, pH, in vitro dry matter digestibility (IVDMD) and buffer capacity. The 17% formic acid method was more accurate for estimating acetic, butyric and lactic acids, although it resulted in low overestimates of propionic acid and underestimates of ethanol. The deionized water method overestimated acetic and propionic acids and slightly underestimated ethanol. The 17% formic acid method was more precise than deionized water for estimating all organic acids and ethanol. The robustness of each method with respect to variation in the si... Mostrar Tudo |
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Thesagro: |
Silagem. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/78416/1/0000007017-Gomes-et-al-2012-RBZ.pdf
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Marc: |
LEADER 02292naa a2200181 a 4500
001 1952505
005 2013-03-07
008 2012 bl uuuu u00u1 u #d
100 1 $aGOMES, R. da C.
245 $aAccuracy, precision and robustness of different methods to obtain samples from silages in fermentation studies.$h[electronic resource]
260 $c2012
520 $aThe objective of this study was to evaluate accuracy, precision and robustness of two methods to obtain silage samples, in comparison with extraction of liquor by manual screw-press. Wet brewery residue alone or combined with soybean hulls and citrus pulp were ensiled in laboratory silos. Liquor was extracted by a manual screw-press and a 2-mL aliquot was fixed with 0.4 mL formic acid. Two 10-g silage samples from each silo were diluted in 20 mL deionized water or 17% formic acid solution (alternative methods). Aliquots obtained by the three methods were used to determine the silage contents of fermentation end-products. The accuracy of the alternative methods was evaluated by comparing mean bias of estimates obtained by manual screw-press and by alternative methods, whereas precision was assessed by the root mean square prediction error and the residual error. Robustness was determined by studying the interaction between bias and chemical components, pH, in vitro dry matter digestibility (IVDMD) and buffer capacity. The 17% formic acid method was more accurate for estimating acetic, butyric and lactic acids, although it resulted in low overestimates of propionic acid and underestimates of ethanol. The deionized water method overestimated acetic and propionic acids and slightly underestimated ethanol. The 17% formic acid method was more precise than deionized water for estimating all organic acids and ethanol. The robustness of each method with respect to variation in the silage chemical composition, IVDMD and pH is dependent on the fermentation end-product at evaluation. The robustness of the alternative methods seems to be critical at the determination of lactic acid and ethanol contents.
650 $aSilagem
700 1 $aMEYER, P. M.
700 1 $aCASTRO, A. L. de
700 1 $aNETTO, A. S.
700 1 $aRODRIGUES, P. H. M.
773 $tRevista Brasileira de Zootecnia$gv.41, n.6, p.1369-1377, 2012.
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Embrapa Gado de Corte (CNPGC) |
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