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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
20/05/2015 |
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Data da última atualização: |
27/07/2015 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
BOEIRA, R. C.; MAXIMILIANO, V. C. B. |
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Afiliação: |
RITA CARLA BOEIRA, CNPMA; VIVIANE CRISTINA B MAXIMILIANO, CNPMA. |
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Título: |
Mineralização de nitrogênio após cinco aplicações de lodos de esgoto em solo agrícola. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE PESQUISAS AMBIENTAIS E SAÚDE, 5., 2005, Santos/SP. Anais... Santos/SP: CBPAS, 2005. p. 82-84. |
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Idioma: |
Português |
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Conteúdo: |
A aplicação agrícola de quantidades excessivas de lodos de esgoto apresenta risco elevado de poluição ambiental com nitrato, gerado durante sua decomposição; este, em excesso no solo, pode ser lixiviado para lençóis freáticos ou corpos d?água podendo causar intoxicações graves (metahemoglobinemia). Com o objetivo de avaliar a mineralização de nitrogênio contido em dois tipos de lodo de esgoto, utilizaram-se amostras de latossolo onde os resíduos foram aplicados em quatro cultivos sucessivos de milho. em laboratório, procedeu-se a uma quinta aplicação e incorporação: na dose 1, foram aplicadas quantidades equivalentes a 6.820 kg/ha de lodo seco urbano e a 9.100 kg/ha de lodo seco urbanoindustrial; a dose 2 foi o dobro da dose 1. periodicamente foram determinados os teores de n mineral. a avaliação dos dados mostrou que a fração de mineralização estimada para o n orgânico foi semelhante para os dois resíduos e para as duas doses aplicadas ao solo. |
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Palavras-Chave: |
Biossólido; Latossoso; Lodo de esgoto anaeróbico; Nitrogênio Orgânico; Nitrogênio potencialmente mineralizável. |
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Thesagro: |
Solo Tropical. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/127022/1/2005AA-021.pdf
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Marc: |
LEADER 01697nam a2200193 a 4500
001 2015854
005 2015-07-27
008 2005 bl uuuu u00u1 u #d
100 1 $aBOEIRA, R. C.
245 $aMineralização de nitrogênio após cinco aplicações de lodos de esgoto em solo agrícola.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE PESQUISAS AMBIENTAIS E SAÚDE, 5., 2005, Santos/SP. Anais... Santos/SP: CBPAS, 2005. p. 82-84.$c2005
520 $aA aplicação agrícola de quantidades excessivas de lodos de esgoto apresenta risco elevado de poluição ambiental com nitrato, gerado durante sua decomposição; este, em excesso no solo, pode ser lixiviado para lençóis freáticos ou corpos d?água podendo causar intoxicações graves (metahemoglobinemia). Com o objetivo de avaliar a mineralização de nitrogênio contido em dois tipos de lodo de esgoto, utilizaram-se amostras de latossolo onde os resíduos foram aplicados em quatro cultivos sucessivos de milho. em laboratório, procedeu-se a uma quinta aplicação e incorporação: na dose 1, foram aplicadas quantidades equivalentes a 6.820 kg/ha de lodo seco urbano e a 9.100 kg/ha de lodo seco urbanoindustrial; a dose 2 foi o dobro da dose 1. periodicamente foram determinados os teores de n mineral. a avaliação dos dados mostrou que a fração de mineralização estimada para o n orgânico foi semelhante para os dois resíduos e para as duas doses aplicadas ao solo.
650 $aSolo Tropical
653 $aBiossólido
653 $aLatossoso
653 $aLodo de esgoto anaeróbico
653 $aNitrogênio Orgânico
653 $aNitrogênio potencialmente mineralizável
700 1 $aMAXIMILIANO, V. C. B.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
11/01/2024 |
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Data da última atualização: |
11/06/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, D. M. dos; MIGLIORINI, F. L.; COATRINI-SOARES, A.; SOARES, J.; MATTOSO, L. H. C.; OLIVEIRA, O. N.; CORREA, D. S. |
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Afiliação: |
ANDREY COATRINI-SOARES; UNIVERSITY OF SÃO PAULO (USP); LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; UNIVERSITY OF SAO PAULO (USP); DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
Low-cost paper-based sensors modified with curcumin for the detection of ochratoxin a in beverages. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Sensors and Actuators Reports, v. 7, 100184, 2024. |
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Páginas: |
11 p. |
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ISSN: |
2666-0539 |
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DOI: |
https://doi.org/10.1016/j.snr.2023.100184 |
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Idioma: |
Inglês |
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Conteúdo: |
Ochratoxin A (OTA) is a mycotoxin that can contaminate food and is produced by fungal species such as Aspergillus carbonarius, Penicillium verrucosum, Aspergillus ochraceus, and Aspergillus niger [1]. OTA poses significant risks to both humans and animals, as it can cause mutagenic, carcinogenic, teratogenic, hemorrhagic, hepatotoxic, estrogenic, immunotoxic, dermatoxic, nephrotoxic, and neurotoxic effects [2–5]. Contamination with OTA can occur at various stages, including during cultivation, post-harvest, and transportation or storage of food produce. Commonly affected food items include dried fruits, cereals, nuts, corn, oats, coffee, grape juice, wine, wheat, and beer [6–9]. OTA is stable in most food-processing conditions, making it a persistent concern in the realm of food safety [4]. Consumption of OTA-contaminated food has emerged as a substantial public health issue that requires immediate attention. Currently, analytical methods such as enzyme-linked immunosorbent assay (ELISA) [10] and chromatographic assays [11] are employed to detect OTA and monitor food quality. However, these approaches are time-consuming and expensive and require sample preparation and trained personnel to operate the instruments. To address these limitations, alternative systems have been proposed, including electrochemical and optical sensors, which offer simpler procedures for detecting OTA traces [4]. Surface functionalization [5,12,13] can further enhance the performance of these sensors. Notably, paper-based sensors show great promise as they fulfill the requirements for point-of-attention food monitoring, are low-cost, portable, and versatile [14,15]. Additionally, functionalization can be accomplished using a wide range of raw, biodegradable materials [16–18]. In this study, we present an innovative paper-based sensor functionalized with curcumin for the optical and electrochemical detection of ochratoxin A (OTA), as illustrated in Scheme 1. Curcumin is a highly promising sensing element due to its affordability, widespread availability, non-toxicity, and pronounced fluorescence that is quenched in the presence of OTA [19–25]. Notably, curcumin also possesses redox-active properties, with two distinct redox centers: a β-diketone. MenosOchratoxin A (OTA) is a mycotoxin that can contaminate food and is produced by fungal species such as Aspergillus carbonarius, Penicillium verrucosum, Aspergillus ochraceus, and Aspergillus niger [1]. OTA poses significant risks to both humans and animals, as it can cause mutagenic, carcinogenic, teratogenic, hemorrhagic, hepatotoxic, estrogenic, immunotoxic, dermatoxic, nephrotoxic, and neurotoxic effects [2–5]. Contamination with OTA can occur at various stages, including during cultivation, post-harvest, and transportation or storage of food produce. Commonly affected food items include dried fruits, cereals, nuts, corn, oats, coffee, grape juice, wine, wheat, and beer [6–9]. OTA is stable in most food-processing conditions, making it a persistent concern in the realm of food safety [4]. Consumption of OTA-contaminated food has emerged as a substantial public health issue that requires immediate attention. Currently, analytical methods such as enzyme-linked immunosorbent assay (ELISA) [10] and chromatographic assays [11] are employed to detect OTA and monitor food quality. However, these approaches are time-consuming and expensive and require sample preparation and trained personnel to operate the instruments. To address these limitations, alternative systems have been proposed, including electrochemical and optical sensors, which offer simpler procedures for detecting OTA traces [4]. Surface functionalization [5,12,13] can further enhance the performance of these sensors... Mostrar Tudo |
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Palavras-Chave: |
Electrochemical detection; Optical detection; Paper-based sensor. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1160713/1/P-Low-cost-paper-based-sensors-modified-with-curcumin-for-the-detection-of.pdf
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Marc: |
LEADER 03083naa a2200265 a 4500
001 2160713
005 2024-06-11
008 2024 bl uuuu u00u1 u #d
022 $a2666-0539
024 7 $ahttps://doi.org/10.1016/j.snr.2023.100184$2DOI
100 1 $aSANTOS, D. M. dos
245 $aLow-cost paper-based sensors modified with curcumin for the detection of ochratoxin a in beverages.$h[electronic resource]
260 $c2024
300 $a11 p.
520 $aOchratoxin A (OTA) is a mycotoxin that can contaminate food and is produced by fungal species such as Aspergillus carbonarius, Penicillium verrucosum, Aspergillus ochraceus, and Aspergillus niger [1]. OTA poses significant risks to both humans and animals, as it can cause mutagenic, carcinogenic, teratogenic, hemorrhagic, hepatotoxic, estrogenic, immunotoxic, dermatoxic, nephrotoxic, and neurotoxic effects [2–5]. Contamination with OTA can occur at various stages, including during cultivation, post-harvest, and transportation or storage of food produce. Commonly affected food items include dried fruits, cereals, nuts, corn, oats, coffee, grape juice, wine, wheat, and beer [6–9]. OTA is stable in most food-processing conditions, making it a persistent concern in the realm of food safety [4]. Consumption of OTA-contaminated food has emerged as a substantial public health issue that requires immediate attention. Currently, analytical methods such as enzyme-linked immunosorbent assay (ELISA) [10] and chromatographic assays [11] are employed to detect OTA and monitor food quality. However, these approaches are time-consuming and expensive and require sample preparation and trained personnel to operate the instruments. To address these limitations, alternative systems have been proposed, including electrochemical and optical sensors, which offer simpler procedures for detecting OTA traces [4]. Surface functionalization [5,12,13] can further enhance the performance of these sensors. Notably, paper-based sensors show great promise as they fulfill the requirements for point-of-attention food monitoring, are low-cost, portable, and versatile [14,15]. Additionally, functionalization can be accomplished using a wide range of raw, biodegradable materials [16–18]. In this study, we present an innovative paper-based sensor functionalized with curcumin for the optical and electrochemical detection of ochratoxin A (OTA), as illustrated in Scheme 1. Curcumin is a highly promising sensing element due to its affordability, widespread availability, non-toxicity, and pronounced fluorescence that is quenched in the presence of OTA [19–25]. Notably, curcumin also possesses redox-active properties, with two distinct redox centers: a β-diketone.
653 $aElectrochemical detection
653 $aOptical detection
653 $aPaper-based sensor
700 1 $aMIGLIORINI, F. L.
700 1 $aCOATRINI-SOARES, A.
700 1 $aSOARES, J.
700 1 $aMATTOSO, L. H. C.
700 1 $aOLIVEIRA, O. N.
700 1 $aCORREA, D. S.
773 $tSensors and Actuators Reports$gv. 7, 100184, 2024.
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Embrapa Instrumentação (CNPDIA) |
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