Oxidation of potato starch by hydrogen peroxide

Petteri Parovuori, Antti Hamunen, Pirkko Forssell, Karin Autio, Kaisa Poutanen

Research output: Contribution to journalArticleScientificpeer-review

130 Citations (Scopus)

Abstract

Potato starch was oxidized by hydrogen peroxide in alkaline and acidic reaction conditions with copper, iron and tungstate catalysts in order to introduce carboxyl and carbonyl groups to the starch molecule.
Carbonyl contents up to 6.6 per 100 glucose units could be obtained, whereas carboxyl content remained low (up to 1.4). Starch yields in the alkaline and acidic reactions were 90 and 99%, respectively. The molecular weight decreased markedly with the degree of oxidation, and was dependent on the catalyst used.
Rheological measurements revealed that when the molecular weight of the moderately oxidized starch was high, a very firm gel (G' = 40kPa) was obtained with 25% starch concentration.
When the degree of oxidation increased, the storage modulus G' decreased. The more the oxidized starch contained carbonyl groups, the higher was the gelatinization temperature.

Original languageEnglish
Pages (from-to)19-23
JournalStärke
Volume47
Issue number1
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

Fingerprint

potato starch
Solanum tuberosum
Starch
Hydrogen Peroxide
hydrogen peroxide
starch
oxidation
Oxidation
catalysts
molecular weight
Molecular Weight
Molecular weight
storage modulus
Catalysts
copper
gels
Copper
iron
Iron
Elastic moduli

Cite this

Parovuori, P., Hamunen, A., Forssell, P., Autio, K., & Poutanen, K. (1995). Oxidation of potato starch by hydrogen peroxide. Stärke, 47(1), 19-23. https://doi.org/10.1002/star.19950470106
Parovuori, Petteri ; Hamunen, Antti ; Forssell, Pirkko ; Autio, Karin ; Poutanen, Kaisa. / Oxidation of potato starch by hydrogen peroxide. In: Stärke. 1995 ; Vol. 47, No. 1. pp. 19-23.
@article{16c3d2dc342d4462b522452a9c67ed82,
title = "Oxidation of potato starch by hydrogen peroxide",
abstract = "Potato starch was oxidized by hydrogen peroxide in alkaline and acidic reaction conditions with copper, iron and tungstate catalysts in order to introduce carboxyl and carbonyl groups to the starch molecule. Carbonyl contents up to 6.6 per 100 glucose units could be obtained, whereas carboxyl content remained low (up to 1.4). Starch yields in the alkaline and acidic reactions were 90 and 99{\%}, respectively. The molecular weight decreased markedly with the degree of oxidation, and was dependent on the catalyst used. Rheological measurements revealed that when the molecular weight of the moderately oxidized starch was high, a very firm gel (G' = 40kPa) was obtained with 25{\%} starch concentration. When the degree of oxidation increased, the storage modulus G' decreased. The more the oxidized starch contained carbonyl groups, the higher was the gelatinization temperature.",
author = "Petteri Parovuori and Antti Hamunen and Pirkko Forssell and Karin Autio and Kaisa Poutanen",
year = "1995",
doi = "10.1002/star.19950470106",
language = "English",
volume = "47",
pages = "19--23",
journal = "Starch",
issn = "2192-4236",
publisher = "Wiley-VCH Verlag",
number = "1",

}

Parovuori, P, Hamunen, A, Forssell, P, Autio, K & Poutanen, K 1995, 'Oxidation of potato starch by hydrogen peroxide', Stärke, vol. 47, no. 1, pp. 19-23. https://doi.org/10.1002/star.19950470106

Oxidation of potato starch by hydrogen peroxide. / Parovuori, Petteri; Hamunen, Antti; Forssell, Pirkko; Autio, Karin; Poutanen, Kaisa.

In: Stärke, Vol. 47, No. 1, 1995, p. 19-23.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Oxidation of potato starch by hydrogen peroxide

AU - Parovuori, Petteri

AU - Hamunen, Antti

AU - Forssell, Pirkko

AU - Autio, Karin

AU - Poutanen, Kaisa

PY - 1995

Y1 - 1995

N2 - Potato starch was oxidized by hydrogen peroxide in alkaline and acidic reaction conditions with copper, iron and tungstate catalysts in order to introduce carboxyl and carbonyl groups to the starch molecule. Carbonyl contents up to 6.6 per 100 glucose units could be obtained, whereas carboxyl content remained low (up to 1.4). Starch yields in the alkaline and acidic reactions were 90 and 99%, respectively. The molecular weight decreased markedly with the degree of oxidation, and was dependent on the catalyst used. Rheological measurements revealed that when the molecular weight of the moderately oxidized starch was high, a very firm gel (G' = 40kPa) was obtained with 25% starch concentration. When the degree of oxidation increased, the storage modulus G' decreased. The more the oxidized starch contained carbonyl groups, the higher was the gelatinization temperature.

AB - Potato starch was oxidized by hydrogen peroxide in alkaline and acidic reaction conditions with copper, iron and tungstate catalysts in order to introduce carboxyl and carbonyl groups to the starch molecule. Carbonyl contents up to 6.6 per 100 glucose units could be obtained, whereas carboxyl content remained low (up to 1.4). Starch yields in the alkaline and acidic reactions were 90 and 99%, respectively. The molecular weight decreased markedly with the degree of oxidation, and was dependent on the catalyst used. Rheological measurements revealed that when the molecular weight of the moderately oxidized starch was high, a very firm gel (G' = 40kPa) was obtained with 25% starch concentration. When the degree of oxidation increased, the storage modulus G' decreased. The more the oxidized starch contained carbonyl groups, the higher was the gelatinization temperature.

U2 - 10.1002/star.19950470106

DO - 10.1002/star.19950470106

M3 - Article

VL - 47

SP - 19

EP - 23

JO - Starch

JF - Starch

SN - 2192-4236

IS - 1

ER -