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| Registros recuperados : 13 | |
| 12. |  | WILCOX, J. R.; ATHOW, K. L.; MARTIN, R. J.; LAVIOLETTE, F. A.; AGNEY, T. S.; RICHARDS, T. L.; SWEARINGIN, M. L. Performance of soybean varieties in Indiana, 1970-1975. West Lafayette: Purdue University, 1976. 6 p. (Station Bulletin, 116).| Biblioteca(s): Embrapa Soja. |
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| 13. | | DUMAS, J. B. A.; CANNIZZARO, S.; HOFMANN, A. W.; WURTZ, A.; HELMHOLTZ, H. von; MENDELÉEFF, D.; OSTWALD, W.; FISCHER, E.; RICHARDS, T. W.; ARRHENIUS, S.; MILLIKAN, R. A.; WILLSTÄTER, R. Lectures delivered before the chemical society: faraday lectures. London: The Chemical Society, 1928. 285 p.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
|
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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Circulação/Nível: |
A - 2 |
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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. |
|
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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