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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
02/02/2015 |
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Data da última atualização: |
30/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAIVA, C. L.; EVANGELISTA, W. P.; QUEIROZ, V. A. V.; GLORIA, M. B. A. |
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Afiliação: |
VALERIA APARECIDA VIEIRA QUEIROZ, CNPMS. |
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Título: |
Bioactive amines in sorghum: method optimisation and influence of line, tannin and hydric stress. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Food Chemistry, London, v. 173, p. 224-230, 2015. |
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DOI: |
10.1016/j.foodchem.2014.10.039 |
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Idioma: |
Inglês |
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Conteúdo: |
The profile and levels of bioactive amines in different sorghum lines were reported for the first time. The amines were quantified by ion-pair HPLC, post-column derivatisation with o-phthalaldehyde and fluorimetric detection. The extraction procedure was optimised: 420 lm particle size, extraction with 5% trichloroacetic acid and three extractions. The screening of 22 sorghum lines showed that four of the ten amines investigated were detected. Spermine and spermidine were the prevalent amines (100%), followed by putrescine (77%) and cadaverine (14%). Total amines ranged from 5.8 to 41.4 mg/100 g, and the polyamines represented 60?100% of the total. Sorghum without tannin had higher amines levels compared to sorghum with tannin and cadaverine was specific to samples without tannin. Hydric stress caused accumulation of spermidine in the grains and affected the levels of other amines at rates depending on the presence or not of tannin. Sorghum is a significant source of polyamines. |
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Palavras-Chave: |
Bioactive amines; Estresse hídrico; Hydric stress. |
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Thesagro: |
Amina; Sorghum bicolor. |
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Thesaurus Nal: |
Polyamines. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 01717naa a2200241 a 4500
001 2007406
005 2018-05-30
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1016/j.foodchem.2014.10.039$2DOI
100 1 $aPAIVA, C. L.
245 $aBioactive amines in sorghum$bmethod optimisation and influence of line, tannin and hydric stress.$h[electronic resource]
260 $c2015
520 $aThe profile and levels of bioactive amines in different sorghum lines were reported for the first time. The amines were quantified by ion-pair HPLC, post-column derivatisation with o-phthalaldehyde and fluorimetric detection. The extraction procedure was optimised: 420 lm particle size, extraction with 5% trichloroacetic acid and three extractions. The screening of 22 sorghum lines showed that four of the ten amines investigated were detected. Spermine and spermidine were the prevalent amines (100%), followed by putrescine (77%) and cadaverine (14%). Total amines ranged from 5.8 to 41.4 mg/100 g, and the polyamines represented 60?100% of the total. Sorghum without tannin had higher amines levels compared to sorghum with tannin and cadaverine was specific to samples without tannin. Hydric stress caused accumulation of spermidine in the grains and affected the levels of other amines at rates depending on the presence or not of tannin. Sorghum is a significant source of polyamines.
650 $aPolyamines
650 $aAmina
650 $aSorghum bicolor
653 $aBioactive amines
653 $aEstresse hídrico
653 $aHydric stress
700 1 $aEVANGELISTA, W. P.
700 1 $aQUEIROZ, V. A. V.
700 1 $aGLORIA, M. B. A.
773 $tFood Chemistry, London$gv. 173, p. 224-230, 2015.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
12/09/2013 |
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Data da última atualização: |
03/10/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FREITAS, S. T. de; AMARANTE, C. V. T. do; DANDEKAR, A. M.; MITCHAM, E. J. |
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Afiliação: |
SERGIO TONETTO DE FREITAS, CPATSA; CASSANDRO V. T. DO AMARANTE; ABHAYA M. DANDEKAR; ELIZABETH J. MITCHAM. |
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Título: |
Shading affects flesh calcium uptake and concentration, bitter pit incidence and other fruit traits in Greensleeves apple. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Scientia Horticulturae, Amsterdam, v. 161, p. 266-272, 2013. |
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Idioma: |
Inglês |
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Conteúdo: |
Bitter pit (BP) is a physiological disorder in apple (Malus × domestica Borkh) believed to be triggered bylow Ca2+concentrations in the fruit, and which may be influenced by environmental conditions. Theobjectives of this study were to explore the effects of tree shading on total and cell wall bound fruit Ca2+content and fruit susceptibility to BP. Greensleeves (GS) apple trees were cultivated under shaded andnon-shaded conditions. The shading condition was applied 70 days after full bloom by reducing about50% of the sunlight reaching the tree canopies. Shading increased stem water potential and leaf stomatalconductance. Bitter pit was observed only in shaded fruit. Cortical Ca2+was most abundant in shadedfruit without BP symptoms, intermediary in shaded fruit with BP, and lowest in non-shaded fruit. The cellwall Ca2+concentration was higher in shaded than non-shaded fruit, but shaded fruit with and withoutBP had similar cell wall Ca2+concentrations. The degree of pectin deesterification and the expression oftwo pectin methylesterases (PME1 and PME2) were higher in shaded fruit than in non-shaded fruit. Thepercentage of total cortical Ca2+bound to the cell wall was highest in shaded fruit with BP. Shaded fruitwithout BP had lower Mg2+content and Mg2+/Ca2+ratio in cortical tissue than shaded fruit with BP. Theresults indicate that although shade increases fruit Ca2+uptake, it also enhances fruit susceptibility to BPby increasing Mg2+uptake and Ca2+binding to the cell wall in fruit cortical tissue. MenosBitter pit (BP) is a physiological disorder in apple (Malus × domestica Borkh) believed to be triggered bylow Ca2+concentrations in the fruit, and which may be influenced by environmental conditions. Theobjectives of this study were to explore the effects of tree shading on total and cell wall bound fruit Ca2+content and fruit susceptibility to BP. Greensleeves (GS) apple trees were cultivated under shaded andnon-shaded conditions. The shading condition was applied 70 days after full bloom by reducing about50% of the sunlight reaching the tree canopies. Shading increased stem water potential and leaf stomatalconductance. Bitter pit was observed only in shaded fruit. Cortical Ca2+was most abundant in shadedfruit without BP symptoms, intermediary in shaded fruit with BP, and lowest in non-shaded fruit. The cellwall Ca2+concentration was higher in shaded than non-shaded fruit, but shaded fruit with and withoutBP had similar cell wall Ca2+concentrations. The degree of pectin deesterification and the expression oftwo pectin methylesterases (PME1 and PME2) were higher in shaded fruit than in non-shaded fruit. Thepercentage of total cortical Ca2+bound to the cell wall was highest in shaded fruit with BP. Shaded fruitwithout BP had lower Mg2+content and Mg2+/Ca2+ratio in cortical tissue than shaded fruit with BP. Theresults indicate that although shade increases fruit Ca2+uptake, it also enhances fruit susceptibility to BPby increasing Mg2+uptake and Ca2+binding to the cell wall in ... Mostrar Tudo |
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Palavras-Chave: |
Apple; Deficiência de cálcio; Desordem fisiológica; Nutrientes; Parede celular; Radiação fotossinteticamente ativa. |
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Thesagro: |
Fisiologia; Fruta; Maça. |
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Thesaurus NAL: |
Fruits. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02361naa a2200277 a 4500
001 1966119
005 2013-10-03
008 2013 bl uuuu u00u1 u #d
100 1 $aFREITAS, S. T. de
245 $aShading affects flesh calcium uptake and concentration, bitter pit incidence and other fruit traits in Greensleeves apple.$h[electronic resource]
260 $c2013
520 $aBitter pit (BP) is a physiological disorder in apple (Malus × domestica Borkh) believed to be triggered bylow Ca2+concentrations in the fruit, and which may be influenced by environmental conditions. Theobjectives of this study were to explore the effects of tree shading on total and cell wall bound fruit Ca2+content and fruit susceptibility to BP. Greensleeves (GS) apple trees were cultivated under shaded andnon-shaded conditions. The shading condition was applied 70 days after full bloom by reducing about50% of the sunlight reaching the tree canopies. Shading increased stem water potential and leaf stomatalconductance. Bitter pit was observed only in shaded fruit. Cortical Ca2+was most abundant in shadedfruit without BP symptoms, intermediary in shaded fruit with BP, and lowest in non-shaded fruit. The cellwall Ca2+concentration was higher in shaded than non-shaded fruit, but shaded fruit with and withoutBP had similar cell wall Ca2+concentrations. The degree of pectin deesterification and the expression oftwo pectin methylesterases (PME1 and PME2) were higher in shaded fruit than in non-shaded fruit. Thepercentage of total cortical Ca2+bound to the cell wall was highest in shaded fruit with BP. Shaded fruitwithout BP had lower Mg2+content and Mg2+/Ca2+ratio in cortical tissue than shaded fruit with BP. Theresults indicate that although shade increases fruit Ca2+uptake, it also enhances fruit susceptibility to BPby increasing Mg2+uptake and Ca2+binding to the cell wall in fruit cortical tissue.
650 $aFruits
650 $aFisiologia
650 $aFruta
650 $aMaça
653 $aApple
653 $aDeficiência de cálcio
653 $aDesordem fisiológica
653 $aNutrientes
653 $aParede celular
653 $aRadiação fotossinteticamente ativa
700 1 $aAMARANTE, C. V. T. do
700 1 $aDANDEKAR, A. M.
700 1 $aMITCHAM, E. J.
773 $tScientia Horticulturae, Amsterdam$gv. 161, p. 266-272, 2013.
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