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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. |
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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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Embrapa Agroindústria de Alimentos (CTAA) |
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Biblioteca(s): |
Embrapa Cocais. |
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Data corrente: |
04/07/2022 |
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Data da última atualização: |
13/10/2022 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
ZONTA, J. B.; ABREU, G. B.; SANTIAGO, C. M.; NOGUEIRA, L. C.; FONTES, M. V. N.; MELO, P. A. F. R. de; RODRIGUES, A. A. C. |
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Afiliação: |
JOAO BATISTA ZONTA, CPACP; GUILHERME BARBOSA ABREU, CPACP; CARLOS MARTINS SANTIAGO, CPACP; LUIS CARLOS NOGUEIRA, CPACP; MARCUS VINÍCIUS NASCIMENTO FONTES, FAPEMA; PAULO ALEXANDRE FERNANDES RODRIGUES DE MELO, UEMA; ANTÔNIA ALICE COSTA RODRIGUES, UEMA. |
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Título: |
Qualidade de sementes de arroz de produção e uso próprios por agricultores familiares no Estado do Maranhão. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
São Luís, MA: Embrapa Cocais, 2022. |
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Páginas: |
40 p. |
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Série: |
(Embrapa Cocais. Documentos, 6). |
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Idioma: |
Português |
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Notas: |
Agenda-2030, ODS-Publicação, ODS 2. |
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Conteúdo: |
Esta publicação traz informações sobre a qualidade das sementes de uso próprio (também conhecidas como sementes salvas) produzidas e utilizadas pelos agricultores familiares do estado do Maranhão. Traz também recomendações técnicas que podem ser utilizadas pelos agricultores familiares maranhenses para manutenção da qualidade física, fisiológica e sanitária das sementes por eles produzidas. No âmbito dos Objetivos do Desenvolvimento Sustentável (ODS) da ONU, o trabalho relatado nesta publicação traz contribuições diretas e indiretas para o ODS 2 (Fome Zero e Agricultura Sustentável). Em um dos estados brasileiros com os menores índices de IDH em seus municípios, a contribuição desta publicação é muito importante, principalmente, porque foca no produto arroz, que é básica para a alimentação no estado do Maranhão. |
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Palavras-Chave: |
Beneficiamento de sementes; Maranhão; Oriza sativa. |
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Thesagro: |
Arroz. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144439/1/DOC-6-CPACP-Qualidade-de-sementes-de-arroz-de-producao-e-uso-proprios.pdf
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Marc: |
LEADER 01675nam a2200265 a 4500
001 2144439
005 2022-10-13
008 2022 bl uuuu u0uu1 u #d
100 1 $aZONTA, J. B.
245 $aQualidade de sementes de arroz de produção e uso próprios por agricultores familiares no Estado do Maranhão.$h[electronic resource]
260 $aSão Luís, MA: Embrapa Cocais$c2022
300 $a40 p.
490 $a(Embrapa Cocais. Documentos, 6).
500 $aAgenda-2030, ODS-Publicação, ODS 2.
520 $aEsta publicação traz informações sobre a qualidade das sementes de uso próprio (também conhecidas como sementes salvas) produzidas e utilizadas pelos agricultores familiares do estado do Maranhão. Traz também recomendações técnicas que podem ser utilizadas pelos agricultores familiares maranhenses para manutenção da qualidade física, fisiológica e sanitária das sementes por eles produzidas. No âmbito dos Objetivos do Desenvolvimento Sustentável (ODS) da ONU, o trabalho relatado nesta publicação traz contribuições diretas e indiretas para o ODS 2 (Fome Zero e Agricultura Sustentável). Em um dos estados brasileiros com os menores índices de IDH em seus municípios, a contribuição desta publicação é muito importante, principalmente, porque foca no produto arroz, que é básica para a alimentação no estado do Maranhão.
650 $aArroz
653 $aBeneficiamento de sementes
653 $aMaranhão
653 $aOriza sativa
700 1 $aABREU, G. B.
700 1 $aSANTIAGO, C. M.
700 1 $aNOGUEIRA, L. C.
700 1 $aFONTES, M. V. N.
700 1 $aMELO, P. A. F. R. de
700 1 $aRODRIGUES, A. A. C.
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Embrapa Cocais (CPACP) |
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