Characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of Beta vulgaris industrialization

According to many scientific studies, people who have a diet rich in fiber have a low incidence of gastrointestinal disorders, diabetes mellitus, obesity and cardiovascular disease. An alternative to compensate the deficiency of dietary fiber in foods is to incorporate it as a supplement./Pectin is...

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Autores principales: Rojas, Ana María Luisa, Fissore, Eliana Noemí, Gerschenson, Lía Noemí
Publicado: 2015
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97816346_v_n_p113_Erhardt
http://hdl.handle.net/20.500.12110/paper_97816346_v_n_p113_Erhardt
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_97816346_v_n_p113_Erhardt2023-06-08T16:38:32Z Characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of Beta vulgaris industrialization Rojas, Ana María Luisa Fissore, Eliana Noemí Gerschenson, Lía Noemí According to many scientific studies, people who have a diet rich in fiber have a low incidence of gastrointestinal disorders, diabetes mellitus, obesity and cardiovascular disease. An alternative to compensate the deficiency of dietary fiber in foods is to incorporate it as a supplement./Pectin is a fermentable dietary fiber as it resists digestion and absorption in the human small intestine and experiences a total or partial fermentation in the large intestine. Besides possessing multiple health benefits, pectin has applications in the food industry as a gelling agent, thickener, fat replacement, emulsion stabilizer, among others./In the industry, pectin is usually extracted by treating the raw material (i.e., apple, citrus) with dilute mineral acid at pH near 2, generating large amounts of effluents in need of treatment. Enzymatic methods of pectin isolation are an environmentally friendly alternative to acidic methods usually used and allow labeling products with ecological/connotations tending to promote the consumption of products with these features. On the other hand, the increased consumption of fresh cut and peeled products generates a huge amount of wastes that is usually discarded; its use to obtain pectin can help to reduce pollution and restore biomass and nutrients./The isolation techniques and characteristics of different fractions of dietary fiber isolated from industrialization wastes (leaves, stems, rhizomes and peels) of Beta vulgaris var. conditiva were studied in this research. The cell wall material was obtained through drying and grinding of Beta vulgaris wastes and its treatment with boiling ethanol rendered the alcohol insoluble residue. To isolate pectin enriched fractions, two different pre-treatments were assayed: one with sodium carbonate and another one with sodium hydroxide. The last one was selected because of the high yields and the product obtained was subjected to enzymatic digestion with cellulase and hemicellulase to obtain previously cited fractions. The highest antioxidant activity was detected in the cell wall material. The highest yield of the pectin enriched fractions was observed for the sodium hydroxide treatment followed by hydrolysis with cellulase. Rheological characterization showed pseudoplastic behavior with yield stress in flow assays. Dynamic assays showed weak gel behavior for all pectin enriched fractions in the presence of CaCb. Carbohydrate characteristics and polyphenol content influenced the antioxidant activity and rheological behavior./Isolated fractions exhibited different technological characteristics and may be applied as food additives or ingredients. © 2015 by Nova Science Publishers, Inc. All rights reserved. Fil:Rojas, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fissore, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gerschenson, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97816346_v_n_p113_Erhardt http://hdl.handle.net/20.500.12110/paper_97816346_v_n_p113_Erhardt
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description According to many scientific studies, people who have a diet rich in fiber have a low incidence of gastrointestinal disorders, diabetes mellitus, obesity and cardiovascular disease. An alternative to compensate the deficiency of dietary fiber in foods is to incorporate it as a supplement./Pectin is a fermentable dietary fiber as it resists digestion and absorption in the human small intestine and experiences a total or partial fermentation in the large intestine. Besides possessing multiple health benefits, pectin has applications in the food industry as a gelling agent, thickener, fat replacement, emulsion stabilizer, among others./In the industry, pectin is usually extracted by treating the raw material (i.e., apple, citrus) with dilute mineral acid at pH near 2, generating large amounts of effluents in need of treatment. Enzymatic methods of pectin isolation are an environmentally friendly alternative to acidic methods usually used and allow labeling products with ecological/connotations tending to promote the consumption of products with these features. On the other hand, the increased consumption of fresh cut and peeled products generates a huge amount of wastes that is usually discarded; its use to obtain pectin can help to reduce pollution and restore biomass and nutrients./The isolation techniques and characteristics of different fractions of dietary fiber isolated from industrialization wastes (leaves, stems, rhizomes and peels) of Beta vulgaris var. conditiva were studied in this research. The cell wall material was obtained through drying and grinding of Beta vulgaris wastes and its treatment with boiling ethanol rendered the alcohol insoluble residue. To isolate pectin enriched fractions, two different pre-treatments were assayed: one with sodium carbonate and another one with sodium hydroxide. The last one was selected because of the high yields and the product obtained was subjected to enzymatic digestion with cellulase and hemicellulase to obtain previously cited fractions. The highest antioxidant activity was detected in the cell wall material. The highest yield of the pectin enriched fractions was observed for the sodium hydroxide treatment followed by hydrolysis with cellulase. Rheological characterization showed pseudoplastic behavior with yield stress in flow assays. Dynamic assays showed weak gel behavior for all pectin enriched fractions in the presence of CaCb. Carbohydrate characteristics and polyphenol content influenced the antioxidant activity and rheological behavior./Isolated fractions exhibited different technological characteristics and may be applied as food additives or ingredients. © 2015 by Nova Science Publishers, Inc. All rights reserved.
author Rojas, Ana María Luisa
Fissore, Eliana Noemí
Gerschenson, Lía Noemí
spellingShingle Rojas, Ana María Luisa
Fissore, Eliana Noemí
Gerschenson, Lía Noemí
Characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of Beta vulgaris industrialization
author_facet Rojas, Ana María Luisa
Fissore, Eliana Noemí
Gerschenson, Lía Noemí
author_sort Rojas, Ana María Luisa
title Characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of Beta vulgaris industrialization
title_short Characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of Beta vulgaris industrialization
title_full Characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of Beta vulgaris industrialization
title_fullStr Characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of Beta vulgaris industrialization
title_full_unstemmed Characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of Beta vulgaris industrialization
title_sort characterization of fractions enriched in dietary fiber obtained from waste (leaves, stems, rhizomes and peels) of beta vulgaris industrialization
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97816346_v_n_p113_Erhardt
http://hdl.handle.net/20.500.12110/paper_97816346_v_n_p113_Erhardt
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