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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
09/06/2021 |
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Data da última atualização: |
09/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIBEIRO, U. A.; QUEIROZ, L. C.; MARASSI, A. G.; CARVALHO, A. S.; BARROS, G. A.; CONSALTER, D. M.; BEZERRA, J. A.; SANTOS, A. D. C.; COLNAGO, L. A.; MACHADO, M. B. |
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Afiliação: |
LUIZ ALBERTO COLNAGO, CNPDIA. |
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Título: |
Development of a TD-NMR method to monitor Brazil nuts oil content: A green and low-cost based approach. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of the Brazilian Chemical Society, vol. 32, n. 7, 2021. |
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Páginas: |
1405-1412 |
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DOI: |
https://dx.doi.org/10.21577/0103-5053.20210039 |
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Idioma: |
Inglês |
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Conteúdo: |
Growth in the international popularity of Brazil nuts oil (Bertholletia excelsa, Bonpl.) has demanded a closer look at quality aspects of the nuts. In this context, time-domain 1 H nuclear magnetic resonance spectroscopy (TD-NMR) can be a useful tool for assessing the lipid portion of such matrices. In this work, a TD-NMR method was developed and validated to assess the oil content directly from Brazil nuts following the ISO 10565:1998 and DOQ-CGCRE-008. Full validation was addressed covering the working range from 0.67 to 25.00 g (coefficient of determination, R2 = 0.9993). Limits of detection (LOD) and quantification (LOQ) were 0.20 and 0.67 g, respectively. The repeatability and intermediate precision assays met the guide requirements. Oil contents obtained in two laboratories (different equipment) were statistically similar (66.93 ± 4.69 and 70.13 ± 4.15%), highlighting the method’s robustness. The developed approach has the potential to be adopted as an industrial reference method for in situ monitoring of Brazil nuts oil contents. |
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Palavras-Chave: |
Low-field NMR; Oil quantification; Quality; Soxhlet; Validation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01987naa a2200313 a 4500
001 2132252
005 2023-03-09
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://dx.doi.org/10.21577/0103-5053.20210039$2DOI
100 1 $aRIBEIRO, U. A.
245 $aDevelopment of a TD-NMR method to monitor Brazil nuts oil content$bA green and low-cost based approach.$h[electronic resource]
260 $c2021
300 $a1405-1412
520 $aGrowth in the international popularity of Brazil nuts oil (Bertholletia excelsa, Bonpl.) has demanded a closer look at quality aspects of the nuts. In this context, time-domain 1 H nuclear magnetic resonance spectroscopy (TD-NMR) can be a useful tool for assessing the lipid portion of such matrices. In this work, a TD-NMR method was developed and validated to assess the oil content directly from Brazil nuts following the ISO 10565:1998 and DOQ-CGCRE-008. Full validation was addressed covering the working range from 0.67 to 25.00 g (coefficient of determination, R2 = 0.9993). Limits of detection (LOD) and quantification (LOQ) were 0.20 and 0.67 g, respectively. The repeatability and intermediate precision assays met the guide requirements. Oil contents obtained in two laboratories (different equipment) were statistically similar (66.93 ± 4.69 and 70.13 ± 4.15%), highlighting the method’s robustness. The developed approach has the potential to be adopted as an industrial reference method for in situ monitoring of Brazil nuts oil contents.
653 $aLow-field NMR
653 $aOil quantification
653 $aQuality
653 $aSoxhlet
653 $aValidation
700 1 $aQUEIROZ, L. C.
700 1 $aMARASSI, A. G.
700 1 $aCARVALHO, A. S.
700 1 $aBARROS, G. A.
700 1 $aCONSALTER, D. M.
700 1 $aBEZERRA, J. A.
700 1 $aSANTOS, A. D. C.
700 1 $aCOLNAGO, L. A.
700 1 $aMACHADO, M. B.
773 $tJournal of the Brazilian Chemical Society, vol. 32$gn. 7, 2021.
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Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
29/09/2020 |
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Data da última atualização: |
19/11/2020 |
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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: |
SILVA, F. S. da; DOMICIANO, L. F.; GOMES, F. J.; SOLLENBERGER, L. E.; PEDREIRA, C. G. S.; PEREIRA, D. H.; PEDREIRA, B. C. e. |
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Afiliação: |
FLABIELE SOARES DA SILVA, UFMT, Sinop-MT; LEANDRO FERREIRA DOMICIANO, UFMT, Cuiabá-MT; FAGNER JUNIOR GOMES, USP, ESALQ, Piracicaba-SP; LYNN E. SOLLENBERGER, UNIVERSITY of FLORIDA, Gainsville-FL; CARLOS GUILHERME SILVEIRA PEDREIRA, USP, ESALQ, Piracicaba-SP; DALTON HENRIQUE PEREIRA, UFMT, Sinop-MT; BRUNO CARNEIRO E PEDREIRA, CPAMT. |
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Título: |
Herbage accumulation, nutritive value and beef cattle production on marandu palisadegrass pastures in integrated systems. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Agroforestry Systems, v. 94, n. 5, p. 1891-1902, 2020. |
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ISSN: |
0167-4366 |
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DOI: |
https://doi.org/10.1007/s10457-020-00508-3 |
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Idioma: |
Inglês |
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Conteúdo: |
Diversification of monoculture grass pastures may provide opportunity for increased productivity, efficiency, and sustainability of forage-livestock systems. Our objective was to compare herbage accumulation (HA), nutritive value, and animal performance on a grass monoculture control and two alternative systems, all based on ?Marandu? palisadegrass [Brachiaria (syn. Urochloa) brizantha (A. Rich.) Stapf] in the Amazon Biome. Alternatives were a crop-livestock system based on soybean [Glycine max (L.) Merr.] and palisadegrass, and a eucalyptus [Eucalyptus urograndis (hybrid of E. grandis W. Hill ex Maiden and E. urophylla S. T. Blake) clone H13]-palisadegrass silvopasture. From July 2017 to May 2018 all experimental units were stocked continuously with beef cattle using a variable stocking rate to maintain a palisadegrass canopy height of 30 cm. The grass monoculture and silvopasture systems had similar HA (13,200 kg dry matter [DM] ha−1) and herbage accumulation rate (HAR; 40 kg DM ha−1 day−1), whereas crop-livestock resulted in greater HA (127%) and HAR (158%) than the other systems. Animal weight gain ha−1 for crop-livestock was 860 kg, 15% greater than for grass monoculture and silvopasture systems (average of 750 kg). Greatest palisadegrass HA and animal performance following 2 years of soybean production support the crop-livestock as an alternative for sustainable intensification. The similar HA and gain ha−1 in the seventh year of the silvopasture and grass monoculture indicates tree-pastures systems need wider arrangements to warrant long-term productivity. The maintenance of soil fertility, appropriate grazing management, and animal nutritional supplementation can greatly improve forage-based systems in the Amazon Biome. MenosDiversification of monoculture grass pastures may provide opportunity for increased productivity, efficiency, and sustainability of forage-livestock systems. Our objective was to compare herbage accumulation (HA), nutritive value, and animal performance on a grass monoculture control and two alternative systems, all based on ?Marandu? palisadegrass [Brachiaria (syn. Urochloa) brizantha (A. Rich.) Stapf] in the Amazon Biome. Alternatives were a crop-livestock system based on soybean [Glycine max (L.) Merr.] and palisadegrass, and a eucalyptus [Eucalyptus urograndis (hybrid of E. grandis W. Hill ex Maiden and E. urophylla S. T. Blake) clone H13]-palisadegrass silvopasture. From July 2017 to May 2018 all experimental units were stocked continuously with beef cattle using a variable stocking rate to maintain a palisadegrass canopy height of 30 cm. The grass monoculture and silvopasture systems had similar HA (13,200 kg dry matter [DM] ha−1) and herbage accumulation rate (HAR; 40 kg DM ha−1 day−1), whereas crop-livestock resulted in greater HA (127%) and HAR (158%) than the other systems. Animal weight gain ha−1 for crop-livestock was 860 kg, 15% greater than for grass monoculture and silvopasture systems (average of 750 kg). Greatest palisadegrass HA and animal performance following 2 years of soybean production support the crop-livestock as an alternative for sustainable intensification. The similar HA and gain ha−1 in the seventh year of the silvo... Mostrar Tudo |
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Palavras-Chave: |
Mato Grosso; Sinop-MT. |
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Thesaurus NAL: |
Agroforestry; Animal production; Crops; Livestock. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02663naa a2200289 a 4500
001 2125166
005 2020-11-19
008 2020 bl uuuu u00u1 u #d
022 $a0167-4366
024 7 $ahttps://doi.org/10.1007/s10457-020-00508-3$2DOI
100 1 $aSILVA, F. S. da
245 $aHerbage accumulation, nutritive value and beef cattle production on marandu palisadegrass pastures in integrated systems.$h[electronic resource]
260 $c2020
520 $aDiversification of monoculture grass pastures may provide opportunity for increased productivity, efficiency, and sustainability of forage-livestock systems. Our objective was to compare herbage accumulation (HA), nutritive value, and animal performance on a grass monoculture control and two alternative systems, all based on ?Marandu? palisadegrass [Brachiaria (syn. Urochloa) brizantha (A. Rich.) Stapf] in the Amazon Biome. Alternatives were a crop-livestock system based on soybean [Glycine max (L.) Merr.] and palisadegrass, and a eucalyptus [Eucalyptus urograndis (hybrid of E. grandis W. Hill ex Maiden and E. urophylla S. T. Blake) clone H13]-palisadegrass silvopasture. From July 2017 to May 2018 all experimental units were stocked continuously with beef cattle using a variable stocking rate to maintain a palisadegrass canopy height of 30 cm. The grass monoculture and silvopasture systems had similar HA (13,200 kg dry matter [DM] ha−1) and herbage accumulation rate (HAR; 40 kg DM ha−1 day−1), whereas crop-livestock resulted in greater HA (127%) and HAR (158%) than the other systems. Animal weight gain ha−1 for crop-livestock was 860 kg, 15% greater than for grass monoculture and silvopasture systems (average of 750 kg). Greatest palisadegrass HA and animal performance following 2 years of soybean production support the crop-livestock as an alternative for sustainable intensification. The similar HA and gain ha−1 in the seventh year of the silvopasture and grass monoculture indicates tree-pastures systems need wider arrangements to warrant long-term productivity. The maintenance of soil fertility, appropriate grazing management, and animal nutritional supplementation can greatly improve forage-based systems in the Amazon Biome.
650 $aAgroforestry
650 $aAnimal production
650 $aCrops
650 $aLivestock
653 $aMato Grosso
653 $aSinop-MT
700 1 $aDOMICIANO, L. F.
700 1 $aGOMES, F. J.
700 1 $aSOLLENBERGER, L. E.
700 1 $aPEDREIRA, C. G. S.
700 1 $aPEREIRA, D. H.
700 1 $aPEDREIRA, B. C. e
773 $tAgroforestry Systems$gv. 94, n. 5, p. 1891-1902, 2020.
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