Structural, Physicochemical, and Functional Properties of Electrolyzed Cassava Starch

Cassava starch was oxidized using the electrolysis system. Sodium chloride was added to this system at various concentrations from 0.5 to 5.0 % (w/v). The whiteness of modified starches proportionally increased based on the NaCl concentration and human eyes could recognize the difference of color. U...

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Main Authors: Khanh Son Trinh, Thanh Binh Dang
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:International Journal of Food Science
Online Access:http://dx.doi.org/10.1155/2019/9290627
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author Khanh Son Trinh
Thanh Binh Dang
author_facet Khanh Son Trinh
Thanh Binh Dang
author_sort Khanh Son Trinh
collection DOAJ
description Cassava starch was oxidized using the electrolysis system. Sodium chloride was added to this system at various concentrations from 0.5 to 5.0 % (w/v). The whiteness of modified starches proportionally increased based on the NaCl concentration and human eyes could recognize the difference of color. Under treatment, dents occurred on the surface of starch granule. Concentration of carbonyl and carboxyl groups was increased compared to native starch. Based on X-ray diffraction pattern, oxidized starch kept its A-type. Besides, the ratios of alpha-helix/amorphous regions remained indicating oxidation reaction mainly subjected on amorphous region. Intrinsic viscosity was used to indirectly calculate the average molecular weight of sample. Furthermore, results showed that average molecular weight was significantly reduced (from 2.09-fold to 13.22-fold) based on the reacting NaCl concentration. The increase of NaCl content related to the increase of retrogradation of treated starches. At various temperatures (30-95°C), swelling factor and clarity reflected negative and positive correlations to NaCl concentration.
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institution Kabale University
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publishDate 2019-01-01
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series International Journal of Food Science
spelling doaj-art-6d2f09c859b946eb8b95e0f11e35ddfd2025-02-03T07:23:50ZengWileyInternational Journal of Food Science2356-70152314-57652019-01-01201910.1155/2019/92906279290627Structural, Physicochemical, and Functional Properties of Electrolyzed Cassava StarchKhanh Son Trinh0Thanh Binh Dang1HCMC University of Technology and Education, 01 Vo Van Ngan Street, Linh Chieu Ward, Thu Duc District, Ho Chi Minh City, VietnamHCMC University of Technology and Education, 01 Vo Van Ngan Street, Linh Chieu Ward, Thu Duc District, Ho Chi Minh City, VietnamCassava starch was oxidized using the electrolysis system. Sodium chloride was added to this system at various concentrations from 0.5 to 5.0 % (w/v). The whiteness of modified starches proportionally increased based on the NaCl concentration and human eyes could recognize the difference of color. Under treatment, dents occurred on the surface of starch granule. Concentration of carbonyl and carboxyl groups was increased compared to native starch. Based on X-ray diffraction pattern, oxidized starch kept its A-type. Besides, the ratios of alpha-helix/amorphous regions remained indicating oxidation reaction mainly subjected on amorphous region. Intrinsic viscosity was used to indirectly calculate the average molecular weight of sample. Furthermore, results showed that average molecular weight was significantly reduced (from 2.09-fold to 13.22-fold) based on the reacting NaCl concentration. The increase of NaCl content related to the increase of retrogradation of treated starches. At various temperatures (30-95°C), swelling factor and clarity reflected negative and positive correlations to NaCl concentration.http://dx.doi.org/10.1155/2019/9290627
spellingShingle Khanh Son Trinh
Thanh Binh Dang
Structural, Physicochemical, and Functional Properties of Electrolyzed Cassava Starch
International Journal of Food Science
title Structural, Physicochemical, and Functional Properties of Electrolyzed Cassava Starch
title_full Structural, Physicochemical, and Functional Properties of Electrolyzed Cassava Starch
title_fullStr Structural, Physicochemical, and Functional Properties of Electrolyzed Cassava Starch
title_full_unstemmed Structural, Physicochemical, and Functional Properties of Electrolyzed Cassava Starch
title_short Structural, Physicochemical, and Functional Properties of Electrolyzed Cassava Starch
title_sort structural physicochemical and functional properties of electrolyzed cassava starch
url http://dx.doi.org/10.1155/2019/9290627
work_keys_str_mv AT khanhsontrinh structuralphysicochemicalandfunctionalpropertiesofelectrolyzedcassavastarch
AT thanhbinhdang structuralphysicochemicalandfunctionalpropertiesofelectrolyzedcassavastarch