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| Registros recuperados : 210 | |
| Registros recuperados : 210 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
08/06/2020 |
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Data da última atualização: |
12/06/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CAMPESTRINI, L. H.; RASERA, G. B.; CAMARGO, A. C. de; FRANCHIN, M.; NANI, B. D.; ROSALEN, P. L.; CANNIATTI-BRAZACA, S. G.; BIASOTO, A. C. T.; SHAHIDIC, F.; ALENCAR, S. M. |
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Afiliação: |
Luciano Henrique Campestrini; Gabriela Boscariol Rasera; Adriano Costa de Camargo; Marcelo Franchin; Bruno Dias Nani; Pedro Luiz Rosalen; Solange Guidolin Canniatti-Brazaca; ALINE TELLES BIASOTO MARQUES, CPATSA; Fereidoon Shahidic; Severino Matias Alencar. |
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Título: |
Alkaline conditions better extract anti-inflammatory polysaccharides from winemaking by-products. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Food Research International, v. 131, may 2020. |
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DOI: |
https://doi.org/10.1016/j.foodres.2019.108532 |
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Idioma: |
Inglês |
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Conteúdo: |
Winemaking generates large amounts of by-products, a well recognized source of phenolic compounds. However, less attention has been paid to the polysaccharide-rich fraction (PRF) and effects of fractionation techniques on its potential bioactivity. Therefore, PRFs from Syrah and Tempranillo winemaking by-products were extracted under aqueous (neutral pH conditions), acidic and alkaline conditions. PRFs were screened for their monosaccharide composition, uronic acid content, homogeneity and molecular weight. Anti-inflammatory activity of PRFs were evaluated on stimulated RAW 264.7 macrophages. PRF obtained in water and/or under acidic conditions showed heterogeneous profiles. As like as in the others, a heterogeneous and complex profile was detected in extracts procured under alkaline conditions. A high content of uronic acid was found in aqueous extracts, thus indicating the presence of pectin. Pectin and hemicellulose were present in PRFs procured under acidic conditions. Alkaline conditions rendered extracts containing a complex mixture of monosaccharides, mainly xylose. This latter PRF was the only one exhibiting anti-inflammatory potential (at 100 ?g/mL) by reducing the release of TNF-? and activation of NF-?B in LPS-activated RAW 264.7 macrophages, with no effect on cell viability. Regardless of the grape variety, PRFs obtained under alkaline conditions were the best option to obtain bioactive polysaccharides with potential application as a source of anti-inflammatory compounds. A complex mixture of polymers may be responsible for the anti-inflammatory effects. Finally, according to results procured by NMR, it is possible to suggest that bioactive fractions are composed of a chain of ?-L-Araf-(1 ? 3) linked, ?-D-Xylp- (1 ? 4), ?-D-Glcp-(1 ? 4) linked, ?-D-GalpA-(1 ? 4), ?-D-Gal-(1 ? 2) forming possible RG I and RG II and xylan chains. MenosWinemaking generates large amounts of by-products, a well recognized source of phenolic compounds. However, less attention has been paid to the polysaccharide-rich fraction (PRF) and effects of fractionation techniques on its potential bioactivity. Therefore, PRFs from Syrah and Tempranillo winemaking by-products were extracted under aqueous (neutral pH conditions), acidic and alkaline conditions. PRFs were screened for their monosaccharide composition, uronic acid content, homogeneity and molecular weight. Anti-inflammatory activity of PRFs were evaluated on stimulated RAW 264.7 macrophages. PRF obtained in water and/or under acidic conditions showed heterogeneous profiles. As like as in the others, a heterogeneous and complex profile was detected in extracts procured under alkaline conditions. A high content of uronic acid was found in aqueous extracts, thus indicating the presence of pectin. Pectin and hemicellulose were present in PRFs procured under acidic conditions. Alkaline conditions rendered extracts containing a complex mixture of monosaccharides, mainly xylose. This latter PRF was the only one exhibiting anti-inflammatory potential (at 100 ?g/mL) by reducing the release of TNF-? and activation of NF-?B in LPS-activated RAW 264.7 macrophages, with no effect on cell viability. Regardless of the grape variety, PRFs obtained under alkaline conditions were the best option to obtain bioactive polysaccharides with potential application as a source of anti-inflammatory c... Mostrar Tudo |
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Palavras-Chave: |
Atividade anti-inflamatória; Extração sequencial; Polissacarídeos; Vinificação. |
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Thesagro: |
Pectina; Subproduto; Uva. |
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Thesaurus NAL: |
Grapes; Polysaccharides. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02892naa a2200349 a 4500
001 2123132
005 2020-06-12
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foodres.2019.108532$2DOI
100 1 $aCAMPESTRINI, L. H.
245 $aAlkaline conditions better extract anti-inflammatory polysaccharides from winemaking by-products.$h[electronic resource]
260 $c2020
520 $aWinemaking generates large amounts of by-products, a well recognized source of phenolic compounds. However, less attention has been paid to the polysaccharide-rich fraction (PRF) and effects of fractionation techniques on its potential bioactivity. Therefore, PRFs from Syrah and Tempranillo winemaking by-products were extracted under aqueous (neutral pH conditions), acidic and alkaline conditions. PRFs were screened for their monosaccharide composition, uronic acid content, homogeneity and molecular weight. Anti-inflammatory activity of PRFs were evaluated on stimulated RAW 264.7 macrophages. PRF obtained in water and/or under acidic conditions showed heterogeneous profiles. As like as in the others, a heterogeneous and complex profile was detected in extracts procured under alkaline conditions. A high content of uronic acid was found in aqueous extracts, thus indicating the presence of pectin. Pectin and hemicellulose were present in PRFs procured under acidic conditions. Alkaline conditions rendered extracts containing a complex mixture of monosaccharides, mainly xylose. This latter PRF was the only one exhibiting anti-inflammatory potential (at 100 ?g/mL) by reducing the release of TNF-? and activation of NF-?B in LPS-activated RAW 264.7 macrophages, with no effect on cell viability. Regardless of the grape variety, PRFs obtained under alkaline conditions were the best option to obtain bioactive polysaccharides with potential application as a source of anti-inflammatory compounds. A complex mixture of polymers may be responsible for the anti-inflammatory effects. Finally, according to results procured by NMR, it is possible to suggest that bioactive fractions are composed of a chain of ?-L-Araf-(1 ? 3) linked, ?-D-Xylp- (1 ? 4), ?-D-Glcp-(1 ? 4) linked, ?-D-GalpA-(1 ? 4), ?-D-Gal-(1 ? 2) forming possible RG I and RG II and xylan chains.
650 $aGrapes
650 $aPolysaccharides
650 $aPectina
650 $aSubproduto
650 $aUva
653 $aAtividade anti-inflamatória
653 $aExtração sequencial
653 $aPolissacarídeos
653 $aVinificação
700 1 $aRASERA, G. B.
700 1 $aCAMARGO, A. C. de
700 1 $aFRANCHIN, M.
700 1 $aNANI, B. D.
700 1 $aROSALEN, P. L.
700 1 $aCANNIATTI-BRAZACA, S. G.
700 1 $aBIASOTO, A. C. T.
700 1 $aSHAHIDIC, F.
700 1 $aALENCAR, S. M.
773 $tFood Research International$gv. 131, may 2020.
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