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| Registros recuperados : 15 | |
| 4. |  | LIMA, J. D.; MORAES, W. da S.; SILVA, S. H. M. G. da; IBRAHIM, F. N.; SILVA JÚNIOR, A. C. da. Acúmulo de compostos nitrogenados e atividade da redutase do nitrato em alface produzida sob diferentes sistemas de cultivo. Pesquisa Agropecuária Tropical, Goiânia, v. 38, n. 3, p. 180-187, set. 2008.| Biblioteca(s): Embrapa Hortaliças. |
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| 5. | | SOARES, P. C.; COSTA, W. G. da; SILVA JUNIOR, A. C. da; CORNÉLIO V. M. de O.; REIS, M. de S.; MORAIS, O. P. de. BRSMG Rubelita: cultivar de arroz para cultivo em várzeas mineiras. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 8., 2015, Goiânia. O melhoramento de plantas, o futuro da agricultura e a soberania nacional: anais. Goiânia: UFG: SBMP, 2015.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 6. | | SOARES, P. C.; GONÇALVES, R. de P.; COSTA, W. G. da; SILVA JÚNIOR, A. C. da; REIS, M. de S.; CONDÉ, A. B. T.; TORGA, P. P. Ensaio comparativo preliminar de arroz irrigado em Minas Gerais ? safra 2018/2019. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 11., 2019. Balneário Camboriú, SC. Inovação e desenvolvimento na orizicultura: anais eletrônico. Itajaí: Epagri: Sosbai, 2019.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 9. | | COSTA, W. G. da; SANTOS, I. G. dos; SILVA JÚNIOR, A. C. da; CRUZ, C. D.; NASCIMENTO, M.; FERREIRA, R. de P.; VILELA, D. Potential of dry matter yield from alfalfa germplasm in composing base populations. Crop Breeding and Applied Biotechnology, v. 21, n. 2, e36702132, 2021.| Biblioteca(s): Embrapa Gado de Leite; Embrapa Pecuária Sudeste. |
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| 10. | | SILVA, M. J. da; SILVA JÚNIOR, A. C. da; CRUZ, C. D.; NASCIMENTO, M.; OLIVEIRA, M. da S.; SCHAFFERT, R. E.; PARRELLA, R. A. da C. Computational intelligence for studies on genetic diversity between genotypes of biomass sorghum. Pesquisa Agropecuária Brasileira, v. 55, e01723, 2020. Título em português: Inteligência computacional para estudos de diversidade genética entre genótipos de sorgo biomassa.| Biblioteca(s): Embrapa Milho e Sorgo; Embrapa Unidades Centrais. |
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| 12. | | OLIVEIRA, C. F. de; SOUZA, J. E. de; SIQUEIRA, M. J. da S.; SILVA JÚNIOR, A. C. da; FERREIRA, R. de P.; VILELA, D.; CRUZ, C. D. Selection of alfalfa genotypes for dry matter yield and persistence with repeated measures. Agronomy Science and Biotechnology, v. 9, p. 1-14, 2023.| Biblioteca(s): Embrapa Gado de Leite; Embrapa Pecuária Sudeste. |
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| 13. | | SILVA, C. M. da; VASCONCELOS, S. S.; MOURÃO JUNIOR, M.; BISPO, C. J. C.; KATO, O. R.; SILVA JUNIOR, A. C. da; CASTELLANI, D. C. Variação temporal do efluxo de CO2 do solo em sistemas agroflorestais com palma de óleo na Amazônia Oriental. Acta Amazonica, Manaus, v. 46, n. 1, p. 1-12, jan./mar. 2016.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 14. | | SILVA JÚNIOR, A. C. da; COSTA, W. G. da; GUIMARÃES, A. G.; MOURA, W. de M.; CAMPOS, L. J. M.; RODRIGUES, R. de C.; BHERING, L. L.; CRUZ, C. D.; EVARISTO, A. B. Bayesian inference applied to soybean grown under different shading levels using the multiple-trait model. Scientia Agricola, v. 81, e20220233, 2024. 7 p.| Biblioteca(s): Embrapa Soja. |
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| 15. | | SILVA JUNIOR, A. C. da; SOUZA, P. J. de O. P. de; SOUSA, D. de P.; MARTORANO, L. G.; SILVA, C. M. da; SILVA, C. M. da; NUNES, H. G. G. C.; LIMA, M. J. A. de; SOUSA, A. M. L. de; PINTO, J. V. de N.; RUIVO, M. de L. P.; ALVES, J. D. N.; CONCEIÇÃO, H. E. O. da. Energy balance, water demand, and crop coefficient of acid lime in the Oriental Amazon. Water, v. 15, n. 6, Article 1239, 2023.| Biblioteca(s): Embrapa Amazônia Oriental. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
18/05/2023 |
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Data da última atualização: |
11/12/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
FIGUEIREDO, G.; PIMENTA, T. S.; CLERICI, M. T. P. S.; VIANA, A. J. S.; CARVALHO, C. W. P. de; FELISBERTO, M. H. F.; SCHMIELE, M. |
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Afiliação: |
GEYCSON FIGUEIREDO, Universidade Federal dos Vales do jequitinhonha e Mucuri; THAIS SILVEIRA PIMENTA, Universidade Federal dos Vales do Jequitinhonha e Mucuri; MARIA TERESA PEDROSA SILVA CLERICI, UNICAMP; ABRAÃO JOSÉ SILVA VIANA, Universidade Federal dos Vales do Jequitinhonha e Mucuri; CARLOS WANDERLEI PILER DE CARVALHO, CTAA; MÁRIA HERMINIA FERRARI FELISBERTO, UFV; MARCIO SCHMIELE, Universidade Federal dos Vales do Jequitinhonha e Mucuri. |
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Título: |
Ryegrass nanostarch: prospection and characterization. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
In: CONFERÊNCIA INTERNACIONAL DE PROTEÍNAS E COLOIDES ALIMENTARES,9., 2023, Rio de Janeiro. Anais... Campinas, Galoá, 2023. |
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Idioma: |
Inglês |
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Notas: |
Poster 157713. Eixo temático: novos processos e ingredientes. CIPCA. |
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Conteúdo: |
Starches are homopolysaccharides widely used in the most diverse industrial sectors. Despite its versatility, it has limitations due to its botanical origins, such as instability to freezing and thawing cycles, acidic pH, cold insolubility, high shear, high temperatures and restricted viscosity range. This work aimed to investigate a new botanical source for starch extraction using ryegrass seed (Lolium multiflorum L.) of the Winter Star 3 variety, using four extraction methods (aqueous, reducing ? 0.2% active SO2, alkaline ? NaOH 0 .1M and combined - 0.2% SO2 + 0.1M NaOH). Starches were analyzed for chemical, morphological, structural and thermal properties. It was noticed that the samples did not differ in terms of extraction yield (31.55 to 37.81% based on flour), with ryegrass seed having 63.93% starch but being higher in absolute values for reducing method, where the disruption of the disulfide bonds of the protein matrix, favoring the leaching of the starch granules. The starches obtained by the alkaline and combined methods had the lowest protein contents (0.24 and 0.25%, respectively), although the ash content was higher in the alkaline method (1.16%) and similar to the other techniques (~0.75%). The apparent amylose content showed mean values of 16.69% and did not differ with the applied extraction method. The minerals Si, P, Ca, K, S, Fe, Cu and Ag were identified in the starches. Si and P were the major minerals in the starches obtained by the aqueous and reducing methods, and Ca and K were the most important in concentration in the alkaline and combined methods. In addition, the presence of Si, P and S was not detected in starch from the alkaline way. The residual presence of proteins and silicon was confirmed by Fourier transform infrared spectrogram, with characteristic peaks at 2250cm-1 (nitrile group stretching) and 720cm-1 (vibrations of Si-O-Si bonds from the silanol family). Scanning electron microscopy identified that the ryegrass starch granules were oval, polyhedral and irregular, classifying them as trimodal starch granules. The average size of the starch granules was similar between the extraction methods, with average values of 31.5 nm, placing ryegrass starch as the first native nanostarch identified in Brazil. The thermograms determine the temperature required for the endothermic processes of gelatinization and showed values of initial temperature (Ton), peak (Tpeak), final gelatinization (Tend) and gelatinization enthalpy (?H) of 58.13, 58.12, 62.63 and 60.09°C for Ton, 64.73, 64.51, 67.27 and 68.2 °C for Tpeak, 72.36, 74.19, 77, 64 and 80.22°C for Tend and 9.08, 6.14, 9.16 and 14.17 J.g-1 for ?H, respectively for the starches obtained by the aqueous, reducing, alkaline and combined methods. The results indicate specific characteristics of ryegrass starch, as it has a nanoscale trimodal granular structure, low amylose content, high purity and, depending on the extraction method, the presence of silicon, making ryegrass nanostarch as a potential polysaccharide for use in food and non-food industry. MenosStarches are homopolysaccharides widely used in the most diverse industrial sectors. Despite its versatility, it has limitations due to its botanical origins, such as instability to freezing and thawing cycles, acidic pH, cold insolubility, high shear, high temperatures and restricted viscosity range. This work aimed to investigate a new botanical source for starch extraction using ryegrass seed (Lolium multiflorum L.) of the Winter Star 3 variety, using four extraction methods (aqueous, reducing ? 0.2% active SO2, alkaline ? NaOH 0 .1M and combined - 0.2% SO2 + 0.1M NaOH). Starches were analyzed for chemical, morphological, structural and thermal properties. It was noticed that the samples did not differ in terms of extraction yield (31.55 to 37.81% based on flour), with ryegrass seed having 63.93% starch but being higher in absolute values for reducing method, where the disruption of the disulfide bonds of the protein matrix, favoring the leaching of the starch granules. The starches obtained by the alkaline and combined methods had the lowest protein contents (0.24 and 0.25%, respectively), although the ash content was higher in the alkaline method (1.16%) and similar to the other techniques (~0.75%). The apparent amylose content showed mean values of 16.69% and did not differ with the applied extraction method. The minerals Si, P, Ca, K, S, Fe, Cu and Ag were identified in the starches. Si and P were the major minerals in the starches obtained by the aqueous and reducing... Mostrar Tudo |
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Palavras-Chave: |
Gelatinization enthalpy; Nanoscale. |
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Thesaurus NAL: |
Silicon. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03869nam a2200229 a 4500
001 2153823
005 2023-12-11
008 2023 bl uuuu u00u1 u #d
100 1 $aFIGUEIREDO, G.
245 $aRyegrass nanostarch$bprospection and characterization.$h[electronic resource]
260 $aIn: CONFERÊNCIA INTERNACIONAL DE PROTEÍNAS E COLOIDES ALIMENTARES,9., 2023, Rio de Janeiro. Anais... Campinas, Galoá$c2023
500 $aPoster 157713. Eixo temático: novos processos e ingredientes. CIPCA.
520 $aStarches are homopolysaccharides widely used in the most diverse industrial sectors. Despite its versatility, it has limitations due to its botanical origins, such as instability to freezing and thawing cycles, acidic pH, cold insolubility, high shear, high temperatures and restricted viscosity range. This work aimed to investigate a new botanical source for starch extraction using ryegrass seed (Lolium multiflorum L.) of the Winter Star 3 variety, using four extraction methods (aqueous, reducing ? 0.2% active SO2, alkaline ? NaOH 0 .1M and combined - 0.2% SO2 + 0.1M NaOH). Starches were analyzed for chemical, morphological, structural and thermal properties. It was noticed that the samples did not differ in terms of extraction yield (31.55 to 37.81% based on flour), with ryegrass seed having 63.93% starch but being higher in absolute values for reducing method, where the disruption of the disulfide bonds of the protein matrix, favoring the leaching of the starch granules. The starches obtained by the alkaline and combined methods had the lowest protein contents (0.24 and 0.25%, respectively), although the ash content was higher in the alkaline method (1.16%) and similar to the other techniques (~0.75%). The apparent amylose content showed mean values of 16.69% and did not differ with the applied extraction method. The minerals Si, P, Ca, K, S, Fe, Cu and Ag were identified in the starches. Si and P were the major minerals in the starches obtained by the aqueous and reducing methods, and Ca and K were the most important in concentration in the alkaline and combined methods. In addition, the presence of Si, P and S was not detected in starch from the alkaline way. The residual presence of proteins and silicon was confirmed by Fourier transform infrared spectrogram, with characteristic peaks at 2250cm-1 (nitrile group stretching) and 720cm-1 (vibrations of Si-O-Si bonds from the silanol family). Scanning electron microscopy identified that the ryegrass starch granules were oval, polyhedral and irregular, classifying them as trimodal starch granules. The average size of the starch granules was similar between the extraction methods, with average values of 31.5 nm, placing ryegrass starch as the first native nanostarch identified in Brazil. The thermograms determine the temperature required for the endothermic processes of gelatinization and showed values of initial temperature (Ton), peak (Tpeak), final gelatinization (Tend) and gelatinization enthalpy (?H) of 58.13, 58.12, 62.63 and 60.09°C for Ton, 64.73, 64.51, 67.27 and 68.2 °C for Tpeak, 72.36, 74.19, 77, 64 and 80.22°C for Tend and 9.08, 6.14, 9.16 and 14.17 J.g-1 for ?H, respectively for the starches obtained by the aqueous, reducing, alkaline and combined methods. The results indicate specific characteristics of ryegrass starch, as it has a nanoscale trimodal granular structure, low amylose content, high purity and, depending on the extraction method, the presence of silicon, making ryegrass nanostarch as a potential polysaccharide for use in food and non-food industry.
650 $aSilicon
653 $aGelatinization enthalpy
653 $aNanoscale
700 1 $aPIMENTA, T. S.
700 1 $aCLERICI, M. T. P. S.
700 1 $aVIANA, A. J. S.
700 1 $aCARVALHO, C. W. P. de
700 1 $aFELISBERTO, M. H. F.
700 1 $aSCHMIELE, M.
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