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Registro Completo |
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
24/04/2024 |
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Data da última atualização: |
30/04/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BAQUETA, M. R.; MARINI, F.; ROCHA, R. B.; VALDERRAMA, P.; PALLONE, J. A. L. |
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Afiliação: |
MICHEL ROCHA BAQUETA, UNIVERSIDADE DE CAMPINAS; FEDERICO MARINI, UNIVERSITY OF ROME; RODRIGO BARROS ROCHA, CPAF-RO; PATRÍCIA VALDERRAMA UNIVERSIDADE TECNOLÓGICA FEDERAL DO PARANÁ, UNIVERSIDADE TECNOLÓGICA FEDERAL DO PARANÁ; JULIANA AZEVEDO LIMA PALLONE, UNIVERSIDADE DE CAMPINAS. |
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Título: |
Authentication and discrimination of new Brazilian Canephora coffees with geographical indication using a miniaturized near-infrared spectrometer. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Food Research International, v. 172, 2023. |
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Idioma: |
Inglês |
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Conteúdo: |
New Brazilian Canephora coffees (Conilon and Robusta) of high added value from specific origins have been protected by geographical indication to guarantee their origin and quality. Recently, benchtop near-infrared (NIR) spectroscopy combined with chemometrics has demonstrated its usefulness to discriminate them. It was the first study, however, and therefore the possibility exists to develop a new portable NIR method for this purpose. This work assessed a miniaturized NIR as a cheaper spectrometer to discriminate and authenticate new Brazilian Canephora coffees with certified geographical origins and to differentiate them from specialty Arabica. Discriminant chemometric and class modeling techniques have been applied and have obtained good predictive ability on external test sets. In addition, models with similar classification purpose were compared with those obtained in previous research carried out with benchtop NIR for the same samples, obtaining comparable results. In this context, the portable method was used as a laboratory technique and has the advantage of being cheaper than benchtop NIR spectrometer. Furthermore, it brings a high possibility to be implemented in small coffee cooperatives, industries or control agencies in the future that do not have high economic resources. |
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Palavras-Chave: |
Authentication; DD-SIMCA; Geographical origin; MicroNIR; PLS-DA. |
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Thesaurus Nal: |
Chemometrics. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163881/1/3-Baqueta-Food-Res-Int-Portable-NIR-2023-AINFO.pdf
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Marc: |
LEADER 02031naa a2200241 a 4500
001 2163881
005 2024-04-30
008 2023 bl uuuu u00u1 u #d
100 1 $aBAQUETA, M. R.
245 $aAuthentication and discrimination of new Brazilian Canephora coffees with geographical indication using a miniaturized near-infrared spectrometer.$h[electronic resource]
260 $c2023
520 $aNew Brazilian Canephora coffees (Conilon and Robusta) of high added value from specific origins have been protected by geographical indication to guarantee their origin and quality. Recently, benchtop near-infrared (NIR) spectroscopy combined with chemometrics has demonstrated its usefulness to discriminate them. It was the first study, however, and therefore the possibility exists to develop a new portable NIR method for this purpose. This work assessed a miniaturized NIR as a cheaper spectrometer to discriminate and authenticate new Brazilian Canephora coffees with certified geographical origins and to differentiate them from specialty Arabica. Discriminant chemometric and class modeling techniques have been applied and have obtained good predictive ability on external test sets. In addition, models with similar classification purpose were compared with those obtained in previous research carried out with benchtop NIR for the same samples, obtaining comparable results. In this context, the portable method was used as a laboratory technique and has the advantage of being cheaper than benchtop NIR spectrometer. Furthermore, it brings a high possibility to be implemented in small coffee cooperatives, industries or control agencies in the future that do not have high economic resources.
650 $aChemometrics
653 $aAuthentication
653 $aDD-SIMCA
653 $aGeographical origin
653 $aMicroNIR
653 $aPLS-DA
700 1 $aMARINI, F.
700 1 $aROCHA, R. B.
700 1 $aVALDERRAMA, P.
700 1 $aPALLONE, J. A. L.
773 $tFood Research International$gv. 172, 2023.
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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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Cutter |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
22/02/2013 |
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Data da última atualização: |
13/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
REIS, R. C. R.; DANTAS, B. F.; PELACANI, C. R. |
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Afiliação: |
RENATA CONDURU RIBEIRO REIS; BARBARA FRANCA DANTAS, CPATSA; CLAUDINÉIA REGINA PELACANI. |
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Título: |
Mobilization of reserves and germination of seeds of Erythrina velutina Willd. (Leguminosae - Papilionoideae) under different osmotic potentials. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Sementes, v. 34, n. 4, p. 580-588, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Some environmental factors, including water availability, may influence seed germination. This study investigated the germination of E. velutina seeds submitted to different osmotic potentials and mobilization of reserves during water-stress. Scarified seeds were arranged in paper rolls and soaked in solutions of Polyethylene Glycol (PEG) prepared in osmotic potentials 0.0, -0.2, -0.4, -0.6, and -0.8 MPa and kept into a seed germinator, at 25 °C, and 12/12 h photoperiod (L/D), during 10 days. The percentage, mean time, mean speed, germination speed index; as well as the germination uniformity coefficient were assessed. During germination process the total soluble sugars, reducing sugars, soluble protein, and total amino acids were quantified in the cotyledon, hypocotyl and radicle of soaked seeds and cotyledons of quiescent seeds (control). There was influence of osmotic potential on E. velutina seed germination. The germination percentage remained at high levels until -0.6 MPa and above this osmotic potential there has been no germination. The mobilization of stored reserves of carbon and nitrogen in E. velutina seeds was also influenced by water-stress. There was sensitiveness between -0.2 and -0.6 MPa; however, the degradation and the mobilization of reserves was slower when the osmotic potential decreased. |
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Palavras-Chave: |
Carbono de reserva; Proteínas solúveis; Stresse hídrico. |
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Thesagro: |
Caatinga; Germinação; Mulungu; Recurso natural; Semente. |
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Thesaurus NAL: |
Erythrina velutina; Natural resources; Water stress. |
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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/78727/1/Barbara.pdf
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Marc: |
LEADER 02186naa a2200277 a 4500
001 1950565
005 2023-06-13
008 2012 bl uuuu u00u1 u #d
100 1 $aREIS, R. C. R.
245 $aMobilization of reserves and germination of seeds of Erythrina velutina Willd. (Leguminosae - Papilionoideae) under different osmotic potentials.$h[electronic resource]
260 $c2012
520 $aSome environmental factors, including water availability, may influence seed germination. This study investigated the germination of E. velutina seeds submitted to different osmotic potentials and mobilization of reserves during water-stress. Scarified seeds were arranged in paper rolls and soaked in solutions of Polyethylene Glycol (PEG) prepared in osmotic potentials 0.0, -0.2, -0.4, -0.6, and -0.8 MPa and kept into a seed germinator, at 25 °C, and 12/12 h photoperiod (L/D), during 10 days. The percentage, mean time, mean speed, germination speed index; as well as the germination uniformity coefficient were assessed. During germination process the total soluble sugars, reducing sugars, soluble protein, and total amino acids were quantified in the cotyledon, hypocotyl and radicle of soaked seeds and cotyledons of quiescent seeds (control). There was influence of osmotic potential on E. velutina seed germination. The germination percentage remained at high levels until -0.6 MPa and above this osmotic potential there has been no germination. The mobilization of stored reserves of carbon and nitrogen in E. velutina seeds was also influenced by water-stress. There was sensitiveness between -0.2 and -0.6 MPa; however, the degradation and the mobilization of reserves was slower when the osmotic potential decreased.
650 $aErythrina velutina
650 $aNatural resources
650 $aWater stress
650 $aCaatinga
650 $aGerminação
650 $aMulungu
650 $aRecurso natural
650 $aSemente
653 $aCarbono de reserva
653 $aProteínas solúveis
653 $aStresse hídrico
700 1 $aDANTAS, B. F.
700 1 $aPELACANI, C. R.
773 $tRevista Brasileira de Sementes$gv. 34, n. 4, p. 580-588, 2012.
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Embrapa Semiárido (CPATSA) |
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