Influence of storage time at room temperature on the physicochemical properties of cassava starch films

The influence of storage time on colour, moisture content, crystallinity and mechanical performance of edible cassava starch films containing glycerol and sorbate, were studied. The effect of the pH of the film forming systems was also evaluated. It was observed that, for storage times of 4 weeks or...

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Detalles Bibliográficos
Autores principales: Famá, Lucía Mercedes, Goyanes, Silvia Nair, Gerschenson, Lía Noemí
Publicado: 2007
Materias:
Edible starch films
Physicochemical properties
Storage
Crystalline materials
Glycerol
Mechanical properties
pH effects
Physical chemistry
Storage (materials)
Color parameters
Polymer films
Manihot esculenta
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v70_n3_p265_Fama
http://hdl.handle.net/20.500.12110/paper_01448617_v70_n3_p265_Fama
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01448617_v70_n3_p265_Fama
record_format dspace
spelling paper:paper_01448617_v70_n3_p265_Fama2023-06-08T15:12:11Z Influence of storage time at room temperature on the physicochemical properties of cassava starch films Famá, Lucía Mercedes Goyanes, Silvia Nair Gerschenson, Lía Noemí Edible starch films Physicochemical properties Storage Crystalline materials Glycerol Mechanical properties pH effects Physical chemistry Storage (materials) Color parameters Edible starch films Physicochemical properties Polymer films Manihot esculenta The influence of storage time on colour, moisture content, crystallinity and mechanical performance of edible cassava starch films containing glycerol and sorbate, were studied. The effect of the pH of the film forming systems was also evaluated. It was observed that, for storage times of 4 weeks or longer, tan δ curves shifted to higher temperatures independently of the pH. Films obtained from systems of pH 5 showed a decrease in the intensity of the loss tangent-peak observed between -30 and 10 °C, fact that is in accordance with a slight increase in the crystalline fraction. At room temperature, E′ increased and tan δ decreased between 2 and 4 weeks trends that are in accordance with the increase in crystallinity and the decrease in moisture content observed with storage time. Colour parameters and sorbate content did not change significantly along 8 week-storage, showing that sorbate was not destroyed along the period studied. It can be concluded that changes of starch along storage were mostly responsible for the changes observed in mechanical properties. © 2007 Elsevier Ltd. All rights reserved. Fil:Famá, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goyanes, S. 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. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v70_n3_p265_Fama http://hdl.handle.net/20.500.12110/paper_01448617_v70_n3_p265_Fama
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Edible starch films
Physicochemical properties
Storage
Crystalline materials
Glycerol
Mechanical properties
pH effects
Physical chemistry
Storage (materials)
Color parameters
Edible starch films
Physicochemical properties
Polymer films
Manihot esculenta
spellingShingle Edible starch films
Physicochemical properties
Storage
Crystalline materials
Glycerol
Mechanical properties
pH effects
Physical chemistry
Storage (materials)
Color parameters
Edible starch films
Physicochemical properties
Polymer films
Manihot esculenta
Famá, Lucía Mercedes
Goyanes, Silvia Nair
Gerschenson, Lía Noemí
Influence of storage time at room temperature on the physicochemical properties of cassava starch films
topic_facet Edible starch films
Physicochemical properties
Storage
Crystalline materials
Glycerol
Mechanical properties
pH effects
Physical chemistry
Storage (materials)
Color parameters
Edible starch films
Physicochemical properties
Polymer films
Manihot esculenta
description The influence of storage time on colour, moisture content, crystallinity and mechanical performance of edible cassava starch films containing glycerol and sorbate, were studied. The effect of the pH of the film forming systems was also evaluated. It was observed that, for storage times of 4 weeks or longer, tan δ curves shifted to higher temperatures independently of the pH. Films obtained from systems of pH 5 showed a decrease in the intensity of the loss tangent-peak observed between -30 and 10 °C, fact that is in accordance with a slight increase in the crystalline fraction. At room temperature, E′ increased and tan δ decreased between 2 and 4 weeks trends that are in accordance with the increase in crystallinity and the decrease in moisture content observed with storage time. Colour parameters and sorbate content did not change significantly along 8 week-storage, showing that sorbate was not destroyed along the period studied. It can be concluded that changes of starch along storage were mostly responsible for the changes observed in mechanical properties. © 2007 Elsevier Ltd. All rights reserved.
author Famá, Lucía Mercedes
Goyanes, Silvia Nair
Gerschenson, Lía Noemí
author_facet Famá, Lucía Mercedes
Goyanes, Silvia Nair
Gerschenson, Lía Noemí
author_sort Famá, Lucía Mercedes
title Influence of storage time at room temperature on the physicochemical properties of cassava starch films
title_short Influence of storage time at room temperature on the physicochemical properties of cassava starch films
title_full Influence of storage time at room temperature on the physicochemical properties of cassava starch films
title_fullStr Influence of storage time at room temperature on the physicochemical properties of cassava starch films
title_full_unstemmed Influence of storage time at room temperature on the physicochemical properties of cassava starch films
title_sort influence of storage time at room temperature on the physicochemical properties of cassava starch films
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v70_n3_p265_Fama
http://hdl.handle.net/20.500.12110/paper_01448617_v70_n3_p265_Fama
work_keys_str_mv AT famaluciamercedes influenceofstoragetimeatroomtemperatureonthephysicochemicalpropertiesofcassavastarchfilms
AT goyanessilvianair influenceofstoragetimeatroomtemperatureonthephysicochemicalpropertiesofcassavastarchfilms
AT gerschensonlianoemi influenceofstoragetimeatroomtemperatureonthephysicochemicalpropertiesofcassavastarchfilms
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