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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha : |
05/02/2018 |
Actualizado : |
02/06/2020 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
VILARÓ, P.; BENNADJI, Z.; BUDELLI, E.; MOYNA, G.; PANIZZOLO, L.; FERREIRA, F. |
Afiliación : |
PILAR VILARÓ, Universidad de la República (UdelaR)/ Polo de Desarrollo Universitario de Química.; ZOHRA BENNADJI SOUALHIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ELIANA BUDELLI, Universidad de la República (UdelaR).; GUILLERMO MOYNA, Laboratorio de Fisicoquímica Org#1;anica, Departamento de Química del Litoral, CENUR Litoral Norte, UdelaR.; LUIS PANIZZOLO, Universidad de la República (UdelaR).; FERNANDO AMAURY FERREIRA CHIESA, Centro Universitario de Tacuarembó, UdelaR. Laboratorio de Carbohidratos y Glicoconjugados, Departamento de Química Orgánica, Facultad de Química, UdelaR. |
Título : |
Isolation and characterization of galactomannans from Prosopis affinis as potential gum substitutes. |
Fecha de publicación : |
2018 |
Fuente / Imprenta : |
Food Hydrocolloids, Volume 77, April 2018, Pages 711-719. DOI: https://doi.org/10.1016/j.foodhyd.2017.10.038 |
DOI : |
10.1016/j.foodhyd.2017.10.038 |
Idioma : |
Inglés |
Notas : |
Article history: Received 1 September 2017//Received in revised form 30 October 2017//Accepted 31 October 2017//Available online 10 November 2017. Acknowledgements: We thank Guillermo de Souza for the usage of the laboratory, Pilar Menendez and Luis Reina for their assistance with the HPLC and GC-MS experiments, Demian Gomez for the seed photographs, and María Ines Bessio for her comments and suggestions on the SEC/MALLS-QUELS/RI experiments. |
Contenido : |
Galactomannans from the endosperm of mature seeds of Prosopis affinis were isolated following different extraction procedures in yields of up to 64%. The polysaccharides were characterized by HPLC, GC-MS, and NMR spectroscopy, and their physicochemical properties were studied by SEC/MALLS-QUELS/RI
and rheological methods. The monosaccharide composition of the extracted galactomannans showed only mannose and galactose in a ~1.5 ratio, similar to galactomannans found in guar gum and obtained from other Prosopis species. The structural characterization showed that these polysaccharides are composed by a b-(1/4)-linked mannose backbone with galactopyranosyl residues attached through a (1/6) linkages. The weight-average molecular weight (Mw) of the P. affinis galactomannans went from (1.6 ± 0.2) x 106 to (1.8 ± 0.1) x 106 g/mol, and the intrinsic viscosity, in the 9.9 to 10.7 dL/g range, was comparable to that reported for other extracts from the Prosopis genre. Although the molecular weight distribution and intrinsic viscosity were dependent on the extraction procedure, the mannose-togalactose ratio was almost invariant. Conformation plots showed that the polymer extracted at higher temperatures is more cohesive, a characteristic that could be attributed to a greater number of polymerpolymer interactions. Our findings show that the P. affinis galactomannan has nearly monomodal molecular weight distribution, functional properties similar to those of guar gum, and can be isolated from an abundant and readily available non-traditional source. It therefore represents a promising new biomaterial for the food and pharmaceutical industries that can be produced from the regional native flora in a sustainable way. MenosGalactomannans from the endosperm of mature seeds of Prosopis affinis were isolated following different extraction procedures in yields of up to 64%. The polysaccharides were characterized by HPLC, GC-MS, and NMR spectroscopy, and their physicochemical properties were studied by SEC/MALLS-QUELS/RI
and rheological methods. The monosaccharide composition of the extracted galactomannans showed only mannose and galactose in a ~1.5 ratio, similar to galactomannans found in guar gum and obtained from other Prosopis species. The structural characterization showed that these polysaccharides are composed by a b-(1/4)-linked mannose backbone with galactopyranosyl residues attached through a (1/6) linkages. The weight-average molecular weight (Mw) of the P. affinis galactomannans went from (1.6 ± 0.2) x 106 to (1.8 ± 0.1) x 106 g/mol, and the intrinsic viscosity, in the 9.9 to 10.7 dL/g range, was comparable to that reported for other extracts from the Prosopis genre. Although the molecular weight distribution and intrinsic viscosity were dependent on the extraction procedure, the mannose-togalactose ratio was almost invariant. Conformation plots showed that the polymer extracted at higher temperatures is more cohesive, a characteristic that could be attributed to a greater number of polymerpolymer interactions. Our findings show that the P. affinis galactomannan has nearly monomodal molecular weight distribution, functional properties similar to those of guar gum, and can be isolated ... Presentar Todo |
Palabras claves : |
CHEMICAL STRUCTURE; ENDOSPERM; EXTRACTION YIELD; GALACTOMANNAN; INTRINSIC VISCOSITY; MOLECULAR WEIGHT DISTRIBUTION. |
Thesagro : |
PROSOPIS AFFINIS. |
Asunto categoría : |
K10 Producción forestal |
Marc : |
LEADER 03081naa a2200289 a 4500 001 1058025 005 2020-06-02 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1016/j.foodhyd.2017.10.038$2DOI 100 1 $aVILARÓ, P. 245 $aIsolation and characterization of galactomannans from Prosopis affinis as potential gum substitutes.$h[electronic resource] 260 $c2018 500 $aArticle history: Received 1 September 2017//Received in revised form 30 October 2017//Accepted 31 October 2017//Available online 10 November 2017. Acknowledgements: We thank Guillermo de Souza for the usage of the laboratory, Pilar Menendez and Luis Reina for their assistance with the HPLC and GC-MS experiments, Demian Gomez for the seed photographs, and María Ines Bessio for her comments and suggestions on the SEC/MALLS-QUELS/RI experiments. 520 $aGalactomannans from the endosperm of mature seeds of Prosopis affinis were isolated following different extraction procedures in yields of up to 64%. The polysaccharides were characterized by HPLC, GC-MS, and NMR spectroscopy, and their physicochemical properties were studied by SEC/MALLS-QUELS/RI and rheological methods. The monosaccharide composition of the extracted galactomannans showed only mannose and galactose in a ~1.5 ratio, similar to galactomannans found in guar gum and obtained from other Prosopis species. The structural characterization showed that these polysaccharides are composed by a b-(1/4)-linked mannose backbone with galactopyranosyl residues attached through a (1/6) linkages. The weight-average molecular weight (Mw) of the P. affinis galactomannans went from (1.6 ± 0.2) x 106 to (1.8 ± 0.1) x 106 g/mol, and the intrinsic viscosity, in the 9.9 to 10.7 dL/g range, was comparable to that reported for other extracts from the Prosopis genre. Although the molecular weight distribution and intrinsic viscosity were dependent on the extraction procedure, the mannose-togalactose ratio was almost invariant. Conformation plots showed that the polymer extracted at higher temperatures is more cohesive, a characteristic that could be attributed to a greater number of polymerpolymer interactions. Our findings show that the P. affinis galactomannan has nearly monomodal molecular weight distribution, functional properties similar to those of guar gum, and can be isolated from an abundant and readily available non-traditional source. It therefore represents a promising new biomaterial for the food and pharmaceutical industries that can be produced from the regional native flora in a sustainable way. 650 $aPROSOPIS AFFINIS 653 $aCHEMICAL STRUCTURE 653 $aENDOSPERM 653 $aEXTRACTION YIELD 653 $aGALACTOMANNAN 653 $aINTRINSIC VISCOSITY 653 $aMOLECULAR WEIGHT DISTRIBUTION 700 1 $aBENNADJI, Z. 700 1 $aBUDELLI, E. 700 1 $aMOYNA, G. 700 1 $aPANIZZOLO, L. 700 1 $aFERREIRA, F. 773 $tFood Hydrocolloids, Volume 77, April 2018, Pages 711-719. DOI: https://doi.org/10.1016/j.foodhyd.2017.10.038
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Registro original : |
INIA Tacuarembó (TBO) |
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
21/02/2014 |
Actualizado : |
26/10/2017 |
Autor : |
AYALA, W.; LARRATEA, F.; HERKEN, G.; OLANO, I.; RUETE, R. |
Afiliación : |
WALTER FELIZARDO AYALA SILVERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FERNANDA LARRATEA LOPEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Rol de la Festuca en los sistemas ganaderos del este del país. b. Estudios sobre persistencia. |
Fecha de publicación : |
2017 |
Fuente / Imprenta : |
ln: Día de Campo Unidad Experimental Palo a Pique, Oct. 2017. Rol de la genética en los sistemas ganaderos. Treinta y Tres (Uruguay): INIA, 2017. |
Páginas : |
p. 23-25. |
Idioma : |
Español |
Thesagro : |
FESTUCA ARUNDINACEA; PERSISTENCIA DE PASTURAS. |
Asunto categoría : |
F62 Fisiología de la planta - Crecimiento y desarrollo |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/7431/1/DC-UEPP-octubre-2017-p.23-25.pdf
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Marc : |
LEADER 00657nam a2200181 a 4500 001 1032048 005 2017-10-26 008 2017 bl uuuu u0uu1 u #d 100 1 $aAYALA, W. 245 $aRol de la Festuca en los sistemas ganaderos del este del país. b. Estudios sobre persistencia.$h[electronic resource] 260 $aln: Día de Campo Unidad Experimental Palo a Pique, Oct. 2017. Rol de la genética en los sistemas ganaderos. Treinta y Tres (Uruguay): INIA$c2017 300 $ap. 23-25. 650 $aFESTUCA ARUNDINACEA 650 $aPERSISTENCIA DE PASTURAS 700 1 $aLARRATEA, F. 700 1 $aHERKEN, G. 700 1 $aOLANO, I. 700 1 $aRUETE, R.
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