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Abstract:

Chemical and rheological characteristics of fractions enriched In soluble dietary fiber are reported. These fractions were obtained through acid hydrolysis of butternut (Cucurbita moschata Duch ex Poiret) and red beet (Befa vulgaris L. var. conditiva) cell wall enriched powders. Hydrolysis was performed using citric acid at different pH values and reaction times (2 and 3 h). Yields obtained for butternut fractions were between 21 and 28 g/100 g; for red beet, yields were 24 and 31 g/100 g for pH 1.5 and 11 and 17 g/100 g for pH 2.0 for previously mentioned times; in general, the increase of the yield was directly correlated with the decrease of pH and the increase of reaction time. Products enriched in low methoxyl pectins were obtained in all cases. At the lowest pH assayed, pectins were essentially constituted by homogalacturonan; a significant content of neutral sugars was determined at the higher extraction pH. Neutral sugars were constituted mainly by arabinose, galactose, rhamnose, and glucose in different proportions for each fraction; in general, butternut fractions showed high glucose contents. Flow behavior for 2.00% (w/v) aqueous systems of the different products was evaluated. Data obtained for fractions isolated at pH 1.5 fit to Herschel-Bulkley and Cross models while those isolated at pH 2.0 fit to Ostwald and Cross models. All samples showed low viscosity and, hence, poor thickening properties. ©2010 American Chemical Society.

Registro:

Documento: Artículo
Título:Characterization of acid-extracted pectin-enriched products obtained from red beet (Beta vulgaris L var. conditiva) and butternut (Cucurbita moschata Duch ex Poiret)
Autor:Fissore, E.N.; Ponce, N.M.A.; De Marina Escalada, P.; Stortz, C.A.; Rojas, A.M.; Gerschenson, L.N.
Filiación:Industry Department, Buenos Aires University, Ciudad Universitaria, (1428) Buenos Aires, Argentina
Organic Chemistry Department-CIHIDECAR, Buenos Aires University, Ciudad Universitaria, (1428) Buenos Aires, Argentina
National Research Council of Argentina (CONICET), United States
Palabras clave:Butternut; Citric acid; Hydrolysis; Pectin; Red beet; acid; pectin; plant extract; article; beet; chemistry; dietary fiber; isolation and purification; squash; Acids; Beta vulgaris; Cucurbita; Dietary Fiber; Pectins; Plant Extracts; Beta vulgaris; Beta vulgaris subsp. vulgaris; Cucurbita moschata; Juglans cinerea
Año:2010
Volumen:58
Número:6
Página de inicio:3793
Página de fin:3800
DOI: http://dx.doi.org/10.1021/jf903844b
Título revista:Journal of Agricultural and Food Chemistry
Título revista abreviado:J. Agric. Food Chem.
ISSN:00218561
CODEN:JAFCA
CAS:pectin, 9000-69-5; Acids; Pectins; Plant Extracts
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00218561_v58_n6_p3793_Fissore

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Citas:

---------- APA ----------
Fissore, E.N., Ponce, N.M.A., De Marina Escalada, P., Stortz, C.A., Rojas, A.M. & Gerschenson, L.N. (2010) . Characterization of acid-extracted pectin-enriched products obtained from red beet (Beta vulgaris L var. conditiva) and butternut (Cucurbita moschata Duch ex Poiret). Journal of Agricultural and Food Chemistry, 58(6), 3793-3800.
http://dx.doi.org/10.1021/jf903844b
---------- CHICAGO ----------
Fissore, E.N., Ponce, N.M.A., De Marina Escalada, P., Stortz, C.A., Rojas, A.M., Gerschenson, L.N. "Characterization of acid-extracted pectin-enriched products obtained from red beet (Beta vulgaris L var. conditiva) and butternut (Cucurbita moschata Duch ex Poiret)" . Journal of Agricultural and Food Chemistry 58, no. 6 (2010) : 3793-3800.
http://dx.doi.org/10.1021/jf903844b
---------- MLA ----------
Fissore, E.N., Ponce, N.M.A., De Marina Escalada, P., Stortz, C.A., Rojas, A.M., Gerschenson, L.N. "Characterization of acid-extracted pectin-enriched products obtained from red beet (Beta vulgaris L var. conditiva) and butternut (Cucurbita moschata Duch ex Poiret)" . Journal of Agricultural and Food Chemistry, vol. 58, no. 6, 2010, pp. 3793-3800.
http://dx.doi.org/10.1021/jf903844b
---------- VANCOUVER ----------
Fissore, E.N., Ponce, N.M.A., De Marina Escalada, P., Stortz, C.A., Rojas, A.M., Gerschenson, L.N. Characterization of acid-extracted pectin-enriched products obtained from red beet (Beta vulgaris L var. conditiva) and butternut (Cucurbita moschata Duch ex Poiret). J. Agric. Food Chem. 2010;58(6):3793-3800.
http://dx.doi.org/10.1021/jf903844b