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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
21/05/1998 |
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Data da última atualização: |
04/11/2015 |
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Autoria: |
SANTOS, N. A. G.; LANCHOTE, V. L.; DREOSSI, S. A. C.; GOMES, M. A. F.; CERDEIRA, A. L.; CARVALHO, D.; BONATO, P. S. |
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Afiliação: |
USP; USP; USP; MARCO ANTONIO FERREIRA GOMES, CNPMA; ANTONIO LUIZ CERDEIRA, CNPMA; USP; USP. |
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Título: |
GC-MS determination of chlorotriazines in aqueous environmental samples. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: CONGRESS OF PHARMACEUTICAL SCIENCES, 1., 1997, Ribeirao Preto, SP. Bolletino Chimico Farmaceutico, v.136, p.131, 1997. Abstract. |
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Idioma: |
Inglês |
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Conteúdo: |
The extensive use of chlorotriazines as selective herbicides in agriculture and their relatively high persistence imply that these compounds are now present in the environment, contaminating surface and groundwater. In European countries, United States and Canada, the drinking water ordinance demands a limited concentration of 0.5 ug/l for the sum of all pesticides and 0.1 ug/l with respect to each compound, with the consequent need for sensitive and selective analytical methods. Gas chromatography-mass spectrometry (GC-MS) is the most reliable technique for this kind of analysis and was employed in the present study to evaluate the contamination of aqueous environmental samples by atrazine, simazine and ametryne. Surface water samples (1 liter) were collected from the Espraido watershed (Ribeirao Preto, SP, Brazil) during the period from October 1995 to July 1996, at nine different points. Groundwater samples from sites near the river were collected during the same period. The extraction procedure consisted of the addition of 100 ml of water sample, previously filtered throw 0,22 um membranes, to a separatory funnel. After the addition of 25 ul of the internal standard solution (caffeine, 5 ug/ml) and akalinization with 25 ul of 4 M NaOH aqueous solution, the samples were extracted with 15 ml ethyl acetate by shaking for 1 hour. Volumes of 5 ml of the organic phase were transferred to conic tubes and evaporated to dryness under a nitrogen flow, at the temperature of 35oC. The residues were dissolved in 25 ul acetone and 2 ul were chromatographed on a DB-5 column (J&W Scientific, 0.25 mmx30m, film of 0,25 um) using a GC-MS QP5000 Shimadzu apparatus. Helium was used as carrier gas. The operation conditions were: injector temperature 240oC; oven temperature program - start at 60oC for 1 min, increase to 150oC at a rate of 20oC/min and then to 280oC at a rate of 10oC/min; detector temperature of 230oC in the ion source of the MS. Under the chromatographic conditions selected and by extracting 100 ml of water samples, the quantification limit was estimated to be 0.02 ug/l for each triazine herbicide. The results showed traces of ametryne in surface water samples collected in December, whereas the ground water samples used for human consumption did not show contamination. The other herbicides were not detected in the samples analyzed under the condition employed. MenosThe extensive use of chlorotriazines as selective herbicides in agriculture and their relatively high persistence imply that these compounds are now present in the environment, contaminating surface and groundwater. In European countries, United States and Canada, the drinking water ordinance demands a limited concentration of 0.5 ug/l for the sum of all pesticides and 0.1 ug/l with respect to each compound, with the consequent need for sensitive and selective analytical methods. Gas chromatography-mass spectrometry (GC-MS) is the most reliable technique for this kind of analysis and was employed in the present study to evaluate the contamination of aqueous environmental samples by atrazine, simazine and ametryne. Surface water samples (1 liter) were collected from the Espraido watershed (Ribeirao Preto, SP, Brazil) during the period from October 1995 to July 1996, at nine different points. Groundwater samples from sites near the river were collected during the same period. The extraction procedure consisted of the addition of 100 ml of water sample, previously filtered throw 0,22 um membranes, to a separatory funnel. After the addition of 25 ul of the internal standard solution (caffeine, 5 ug/ml) and akalinization with 25 ul of 4 M NaOH aqueous solution, the samples were extracted with 15 ml ethyl acetate by shaking for 1 hour. Volumes of 5 ml of the organic phase were transferred to conic tubes and evaporated to dryness under a nitrogen flow, at the temperature of 35oC. T... Mostrar Tudo |
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Palavras-Chave: |
Chlorotriazines; GC-MS. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/87147/1/1997RAs-006.PDF
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Marc: |
LEADER 03082nam a2200205 a 4500
001 1012896
005 2015-11-04
008 1997 bl uuuu u00u1 u #d
100 1 $aSANTOS, N. A. G.
245 $aGC-MS determination of chlorotriazines in aqueous environmental samples.$h[electronic resource]
260 $aIn: CONGRESS OF PHARMACEUTICAL SCIENCES, 1., 1997, Ribeirao Preto, SP. Bolletino Chimico Farmaceutico, v.136, p.131, 1997. Abstract.$c1997
520 $aThe extensive use of chlorotriazines as selective herbicides in agriculture and their relatively high persistence imply that these compounds are now present in the environment, contaminating surface and groundwater. In European countries, United States and Canada, the drinking water ordinance demands a limited concentration of 0.5 ug/l for the sum of all pesticides and 0.1 ug/l with respect to each compound, with the consequent need for sensitive and selective analytical methods. Gas chromatography-mass spectrometry (GC-MS) is the most reliable technique for this kind of analysis and was employed in the present study to evaluate the contamination of aqueous environmental samples by atrazine, simazine and ametryne. Surface water samples (1 liter) were collected from the Espraido watershed (Ribeirao Preto, SP, Brazil) during the period from October 1995 to July 1996, at nine different points. Groundwater samples from sites near the river were collected during the same period. The extraction procedure consisted of the addition of 100 ml of water sample, previously filtered throw 0,22 um membranes, to a separatory funnel. After the addition of 25 ul of the internal standard solution (caffeine, 5 ug/ml) and akalinization with 25 ul of 4 M NaOH aqueous solution, the samples were extracted with 15 ml ethyl acetate by shaking for 1 hour. Volumes of 5 ml of the organic phase were transferred to conic tubes and evaporated to dryness under a nitrogen flow, at the temperature of 35oC. The residues were dissolved in 25 ul acetone and 2 ul were chromatographed on a DB-5 column (J&W Scientific, 0.25 mmx30m, film of 0,25 um) using a GC-MS QP5000 Shimadzu apparatus. Helium was used as carrier gas. The operation conditions were: injector temperature 240oC; oven temperature program - start at 60oC for 1 min, increase to 150oC at a rate of 20oC/min and then to 280oC at a rate of 10oC/min; detector temperature of 230oC in the ion source of the MS. Under the chromatographic conditions selected and by extracting 100 ml of water samples, the quantification limit was estimated to be 0.02 ug/l for each triazine herbicide. The results showed traces of ametryne in surface water samples collected in December, whereas the ground water samples used for human consumption did not show contamination. The other herbicides were not detected in the samples analyzed under the condition employed.
653 $aChlorotriazines
653 $aGC-MS
700 1 $aLANCHOTE, V. L.
700 1 $aDREOSSI, S. A. C.
700 1 $aGOMES, M. A. F.
700 1 $aCERDEIRA, A. L.
700 1 $aCARVALHO, D.
700 1 $aBONATO, P. S.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
29/04/2024 |
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Data da última atualização: |
09/05/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
VIANA, L. M.; RODRIGUES, F. S. R.; SANTOS, M. C. B.; LIMA, A. dos S.; NABESHIMA, E. H.; LEITE, M. de O.; MARTINS, M. A.; CARVALHO, C. W. P. de; MALTAROLLO, V. G.; AZEVEDO, L.; FERREIRA, M. S. L.; MARTINO, H. S. D.; FELISBERTO, M. H. F.; BARROS, F. A. R. de. |
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Afiliação: |
LEONARA MARTINS VIANA, UNIVERSIDADE FEDERAL DE VIÇOSA; FABIANA SILVA ROCHA RODRIGUES, UNIVERSIDADE FEDERAL DE VIÇOSA; MILLENA CRISTINA BARROS SANTOS, UNIVERSIDADE FEDRAL DO ESTADO DO RIO DE JANEIRO. BORDEAUX METABOLOME-METABOHUB; AMANDA DOS SANTOS LIMA, UNIVERSIDADE FEDERAL DE ALFENAS; ELIZABETH HARUMI NABESHIMA, INSTITUTO DE TECNOLOGIA DE ALIMENTOS; MAURICIO DE OLIVEIRA LEITE, UNIVERSIDADE FEDERAL DE VIÇOSA; MÁRCIO ARÊDES MARTINS, UNIVERSIDADE FEDERAL DE VIÇOSA; CARLOS WANDERLEI PILER DE CARVALHO, CTAA; VINÍCIUS GONÇALVES MALTAROLLO, UNIVERSIDADE FEDERAL DE MINAS GERAIS; LUCIANA AZEVEDO, UNIVERSIDADE FEDERAL DE ALFENAS; MARIANA SIMÕES LARRAZ FERREIRA, UNIVERSIDADE FEDRAL DO ESTADO DO RIO DE JANEIRO; HÉRCIA STAMPINI DUARTE MARTINO, UNIVERSIDADE FEDERAL DE VIÇOSA; MÁRIA HERMINIA FERRARI FELISBERTO, UNIVERSIDADE FEDRAL DE VIÇOSA; FREDERICO AUGUSTO RIBEIRO DE BARROS, UNIVERSIDADE FEDRAL DE VIÇOSA. |
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Título: |
Green banana (Musa ssp.) mixed pulp and peel flour: A new ingredient with interesting bioactive, nutritional, and technological properties for food applications. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Food Chemistry v. 451, 139506, 2024. |
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DOI: |
https://doi.org/10.1016/j.foodchem.2024.139506 |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to characterize and evaluate the in vitro bioactive properties of green banana pulp (GBPF), peel (GBPeF), and mixed pulp/peel flours M1 (90/10) and M2 (80/20). Lipid concentration was higher in GBPeF (7.53%), as were the levels of free and bound phenolics (577 and 653.1 mg GAE/100 g, respectively), whereas the resistant starch content was higher in GBPF (44.11%). Incorporating up to 20% GBPeF into the mixed flour had a minor effect on the starch pasting properties of GBPF. GBPeF featured rutin and trans-ferulic acid as the predominant free and bound phenolic compounds, respectively. GBPF presented different major free phenolics, though it had similar bound phenolics to GBPeF. Both M1 and M2 demonstrated a reduction in intracellular reactive oxygen species (ROS) generation. Consequently, this study validates the potential of green banana mixed flour, containing up to 20% GBPeF, for developing healthy foods and reducing post-harvest losses. |
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Palavras-Chave: |
Analysis; Cancer cells; Green banana peel flour; UPLC ESI QTOF MS. |
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Thesaurus NAL: |
Antioxidants; Chemometrics; Gel strength; Resistant starch. |
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Categoria do assunto: |
Q Alimentos e Nutrição Humana |
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Marc: |
LEADER 02171naa a2200385 a 4500
001 2163981
005 2024-05-09
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foodchem.2024.139506$2DOI
100 1 $aVIANA, L. M.
245 $aGreen banana (Musa ssp.) mixed pulp and peel flour$bA new ingredient with interesting bioactive, nutritional, and technological properties for food applications.$h[electronic resource]
260 $c2024
520 $aThis study aimed to characterize and evaluate the in vitro bioactive properties of green banana pulp (GBPF), peel (GBPeF), and mixed pulp/peel flours M1 (90/10) and M2 (80/20). Lipid concentration was higher in GBPeF (7.53%), as were the levels of free and bound phenolics (577 and 653.1 mg GAE/100 g, respectively), whereas the resistant starch content was higher in GBPF (44.11%). Incorporating up to 20% GBPeF into the mixed flour had a minor effect on the starch pasting properties of GBPF. GBPeF featured rutin and trans-ferulic acid as the predominant free and bound phenolic compounds, respectively. GBPF presented different major free phenolics, though it had similar bound phenolics to GBPeF. Both M1 and M2 demonstrated a reduction in intracellular reactive oxygen species (ROS) generation. Consequently, this study validates the potential of green banana mixed flour, containing up to 20% GBPeF, for developing healthy foods and reducing post-harvest losses.
650 $aAntioxidants
650 $aChemometrics
650 $aGel strength
650 $aResistant starch
653 $aAnalysis
653 $aCancer cells
653 $aGreen banana peel flour
653 $aUPLC ESI QTOF MS
700 1 $aRODRIGUES, F. S. R.
700 1 $aSANTOS, M. C. B.
700 1 $aLIMA, A. dos S.
700 1 $aNABESHIMA, E. H.
700 1 $aLEITE, M. de O.
700 1 $aMARTINS, M. A.
700 1 $aCARVALHO, C. W. P. de
700 1 $aMALTAROLLO, V. G.
700 1 $aAZEVEDO, L.
700 1 $aFERREIRA, M. S. L.
700 1 $aMARTINO, H. S. D.
700 1 $aFELISBERTO, M. H. F.
700 1 $aBARROS, F. A. R. de
773 $tFood Chemistry$gv. 451, 139506, 2024.
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Embrapa Agroindústria de Alimentos (CTAA) |
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