OXIDATION-INDUCED CHANGES IN THE SURFACE STRUCTURE OF STARCH GRANULES.

Native starches of potato, wheat, maize, and waxy maize were subjected to oxidation with: sodium chlorate(I), hydrogen peroxide in the presence of Cu²⁺ions and sodium chlorate(III) in the presence of formaldehyde. Native starches and their modified preparations were determined for the content of carboxyl and aldehyde groups. In order to determine changes in the surface structure of starch granules, microphotograps (SEM) were taken and specific surface (S_BET) was determined. In the research performed sodium chlorate(I) and hydrogen peroxide were found more effective in the oxidation process as they induced greater changes in the surface structure of the investigated oxidised starches than sodium chlorate(III). The most remarkable changes in the specific surface area of the starches examined were caused by sodium chlorate(I), with an increase reported for maize starch and a decrease for wheat starch.

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eISSN:	2083-6007
ISSN:	1230-0322

W latach 2022-2024 kwartalnik naukowy Polish Journal of Food and Nutrition Sciences realizuje projekt nr RCN/SP/0520/2021/1 finansowany ze środków budżetu państwa – Ministerstwo Edukacji i Nauki w ramach programu „Rozwój czasopism naukowych”. Dofinansowanie wynosi 120 000 zł. W ramach projektu podejmowane są działania zmierzające do podniesienia poziomu praktyk wydawniczych i edytorskich, zwiększenia wpływu czasopism na rozwój nauki oraz utrzymania się czasopism w międzynarodowym obiegu naukowym.

In the years 2022-2024, the scientific quarterly Polish Journal of Food and Nutrition Sciences accomplishes a project no. RCN/SP/0520/2021/1 financed from the state budged – Ministry of Education and Science Republic of Poland in the framework of a program “Development of scientific journals”. The financing amounts to 120,000 PLN. The program aims at improving the level of publishing and editing practices, increasing the impact of scientific journals on science development, and extending the international range of scientific journals.