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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
29/09/2022 |
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Data da última atualização: |
29/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MASCARENHAS, A. R. P.; SCATOLINO, M. V.; DIAS, M. C.; MARTINS, M. A.; MELO, R. R. de; MENDONDÇA, M. C.; TONOLI, G. H. D. |
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Afiliação: |
MARIA ALICE MARTINS, CNPDIA. |
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Título: |
Association of cellulose micro/nanofibrils and silicates for cardboard coating: Technological aspects for packaging. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Industrial Crops & Products, v. 188, e115667, 2022. |
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ISSN: |
0926-6690 |
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DOI: |
https://doi.org/10.1016/j.indcrop.2022.115667 |
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Idioma: |
Inglês |
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Conteúdo: |
Paper coating with cellulose micro/nanofibrils (MFC/NFC) can improve the performance of paper packaging. However, the process cost is high due to the significant energy consumption. The objective of this work was to produce MFC/NFC with pre-treated fibers using calcium silicate (Ca2O4Si) and magnesium silicate (MgO3Si) and evaluate their performance as a coating on cardboard. For the production of MFC/NFC, pre-treatments with Ca2O4Si and MgO3Si reduced energy consumption by ~30 %. The layers added to the cardboard reduced the water vapor permeability, mainly for the coating with 5 % MgO3Si (~98 g mm/kPa− 1 day m2 ). These characteristics indicate that coated paperboard is suitable for packaging bread, cheese, fruit, and vegetables. Suspensions with 5 % and 10 % Ca2O4Si increased the spread of PVAc, PVOH, and printing ink. The coatings reduced the strength and stiffness of the papers by ~50 % compared to the uncoated paper due to the wetting and drying cycles. On the other hand, there was an increase in ductility, which potentiated the paper?s formability. Optimizing application and drying techniques for MFC/NFC and silicate coating formulations can improve the mechanical and barrier properties of the coated papers for multilayer packag |
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Palavras-Chave: |
Barrier properties; Multilayer packaging; Surface energy. |
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Categoria do assunto: |
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Marc: |
LEADER 02069naa a2200253 a 4500
001 2146977
005 2022-09-29
008 2022 bl uuuu u00u1 u #d
022 $a0926-6690
024 7 $ahttps://doi.org/10.1016/j.indcrop.2022.115667$2DOI
100 1 $aMASCARENHAS, A. R. P.
245 $aAssociation of cellulose micro/nanofibrils and silicates for cardboard coating$bTechnological aspects for packaging.$h[electronic resource]
260 $c2022
520 $aPaper coating with cellulose micro/nanofibrils (MFC/NFC) can improve the performance of paper packaging. However, the process cost is high due to the significant energy consumption. The objective of this work was to produce MFC/NFC with pre-treated fibers using calcium silicate (Ca2O4Si) and magnesium silicate (MgO3Si) and evaluate their performance as a coating on cardboard. For the production of MFC/NFC, pre-treatments with Ca2O4Si and MgO3Si reduced energy consumption by ~30 %. The layers added to the cardboard reduced the water vapor permeability, mainly for the coating with 5 % MgO3Si (~98 g mm/kPa− 1 day m2 ). These characteristics indicate that coated paperboard is suitable for packaging bread, cheese, fruit, and vegetables. Suspensions with 5 % and 10 % Ca2O4Si increased the spread of PVAc, PVOH, and printing ink. The coatings reduced the strength and stiffness of the papers by ~50 % compared to the uncoated paper due to the wetting and drying cycles. On the other hand, there was an increase in ductility, which potentiated the paper?s formability. Optimizing application and drying techniques for MFC/NFC and silicate coating formulations can improve the mechanical and barrier properties of the coated papers for multilayer packag
653 $aBarrier properties
653 $aMultilayer packaging
653 $aSurface energy
700 1 $aSCATOLINO, M. V.
700 1 $aDIAS, M. C.
700 1 $aMARTINS, M. A.
700 1 $aMELO, R. R. de
700 1 $aMENDONDÇA, M. C.
700 1 $aTONOLI, G. H. D.
773 $tIndustrial Crops & Products$gv. 188, e115667, 2022.
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Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
10/08/2021 |
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Data da última atualização: |
10/08/2021 |
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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: |
NICOLOSO, R. da S.; RICE, C. W. |
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Afiliação: |
RODRIGO DA SILVEIRA NICOLOSO, CNPSA; CHARLES W. RICE, Kansas State University. |
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Título: |
Intensification of no-till agricultural systems: an opportunity for carbon sequestration. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Soil Science Society of America Journal, 20 Apr. 2021. |
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DOI: |
https://doi.org/10.1002/saj2.20260 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The ?4 per 1,000? initiative was launched at the 21st Conference of the Parties (COP21) stimulating a long-standing debate on the potential of no-till (NT) to promote soil C sequestration. Previous reviews found little or no soil organic C (SOC) accrual in NT soils as compared with full inversion tillage when soils are sampled deeper than 30 cm. Here, we present the results of a global meta-analysis of studies assessing SOC and total N (TN) storage and dynamics in NT and tilled soils from the most important agricultural regions of the world. Overall, our results show that NT soils stored 6.7 ± 1.9 Mg C ha?1 and 1.1 ± 0.4 Mg N ha?1 more than tilled soils (0-to-100-cm depth) with an average of 16 yr of NT, in contrast with previous findings. However, C sequestration (+4.7 ± 1.9 Mg C ha?1 in the 0-to-60-cm depth with an average of 11 yr of NT) depended on the association of NT with increased crop frequency and the inclusion of legumes cover crops. Single-cropping systems lack the necessary C inputs to offset SOC losses in the soil profile (below 30-cm depth). However, double-cropping systems decreased soil TN that may constrain future C sequestration. The use of legumes alleviated TN loss and supported soil C sequestration. Briefly, our findings indicate that NT can avoid SOC losses from tilled soils, partially offsetting CO2 emissions from agriculture. Moreover, NT with agricultural intensification can promote soil C sequestration, thus contributing to soil quality, food security, and adaptation to climate change. MenosAbstract: The ?4 per 1,000? initiative was launched at the 21st Conference of the Parties (COP21) stimulating a long-standing debate on the potential of no-till (NT) to promote soil C sequestration. Previous reviews found little or no soil organic C (SOC) accrual in NT soils as compared with full inversion tillage when soils are sampled deeper than 30 cm. Here, we present the results of a global meta-analysis of studies assessing SOC and total N (TN) storage and dynamics in NT and tilled soils from the most important agricultural regions of the world. Overall, our results show that NT soils stored 6.7 ± 1.9 Mg C ha?1 and 1.1 ± 0.4 Mg N ha?1 more than tilled soils (0-to-100-cm depth) with an average of 16 yr of NT, in contrast with previous findings. However, C sequestration (+4.7 ± 1.9 Mg C ha?1 in the 0-to-60-cm depth with an average of 11 yr of NT) depended on the association of NT with increased crop frequency and the inclusion of legumes cover crops. Single-cropping systems lack the necessary C inputs to offset SOC losses in the soil profile (below 30-cm depth). However, double-cropping systems decreased soil TN that may constrain future C sequestration. The use of legumes alleviated TN loss and supported soil C sequestration. Briefly, our findings indicate that NT can avoid SOC losses from tilled soils, partially offsetting CO2 emissions from agriculture. Moreover, NT with agricultural intensification can promote soil C sequestration, thus contributing to soil quality, ... Mostrar Tudo |
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Palavras-Chave: |
Agricultural systems; Sistemas agrícolas. |
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Thesagro: |
Carbono; Plantio Direto; Solo. |
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Thesaurus NAL: |
Greenhouse gas emissions; Greenhouse soils; No-tillage. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02279naa a2200241 a 4500
001 2133401
005 2021-08-10
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1002/saj2.20260$2DOI
100 1 $aNICOLOSO, R. da S.
245 $aIntensification of no-till agricultural systems$ban opportunity for carbon sequestration.$h[electronic resource]
260 $c2021
520 $aAbstract: The ?4 per 1,000? initiative was launched at the 21st Conference of the Parties (COP21) stimulating a long-standing debate on the potential of no-till (NT) to promote soil C sequestration. Previous reviews found little or no soil organic C (SOC) accrual in NT soils as compared with full inversion tillage when soils are sampled deeper than 30 cm. Here, we present the results of a global meta-analysis of studies assessing SOC and total N (TN) storage and dynamics in NT and tilled soils from the most important agricultural regions of the world. Overall, our results show that NT soils stored 6.7 ± 1.9 Mg C ha?1 and 1.1 ± 0.4 Mg N ha?1 more than tilled soils (0-to-100-cm depth) with an average of 16 yr of NT, in contrast with previous findings. However, C sequestration (+4.7 ± 1.9 Mg C ha?1 in the 0-to-60-cm depth with an average of 11 yr of NT) depended on the association of NT with increased crop frequency and the inclusion of legumes cover crops. Single-cropping systems lack the necessary C inputs to offset SOC losses in the soil profile (below 30-cm depth). However, double-cropping systems decreased soil TN that may constrain future C sequestration. The use of legumes alleviated TN loss and supported soil C sequestration. Briefly, our findings indicate that NT can avoid SOC losses from tilled soils, partially offsetting CO2 emissions from agriculture. Moreover, NT with agricultural intensification can promote soil C sequestration, thus contributing to soil quality, food security, and adaptation to climate change.
650 $aGreenhouse gas emissions
650 $aGreenhouse soils
650 $aNo-tillage
650 $aCarbono
650 $aPlantio Direto
650 $aSolo
653 $aAgricultural systems
653 $aSistemas agrícolas
700 1 $aRICE, C. W.
773 $tSoil Science Society of America Journal, 20 Apr. 2021.
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