Solid State Reactions of Potato Starch with Urea and Biuret

Autor:	Przemysław Siemion, Janusz Kapuśniak, Jacek J. Koziol, Jolanta Jabłońska
Rok vydání:	2004
Předmět:	chemistry.chemical_classification Environmental Engineering Polymers and Plastics Starch Microwave oven food and beverages Biuret test chemistry.chemical_compound Enzyme chemistry Boiling Materials Chemistry Urea Organic chemistry Moiety Potato starch
Zdroj:	Journal of Polymers and the Environment. 12:247-255
ISSN:	1572-8900 1566-2543
DOI:	10.1007/s10924-004-8152-2
Popis:	Reaction of granular potato starch with urea and biuret resulted in the formation of products, which were soluble neither in cold nor boiling water. The net reaction was a monosubstitution of the hydrogen atom in one hydroxyl group in each D-glucose unit of starch with the either CO–NH2 or CO–NH–CO–NH2 moiety, respectively. Properties of the products, particularly these with urea, depended on the mode of reaction. Reactions were carried out in the microwave oven as well as with convection heating. The products retained the granular form of starch but a vast majority of granules were damaged. α-Amylolysis of those materials revealed that their susceptibility to the enzyme increasing in the order: starch
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::77c2be05e8ad6534472e5a474430c2a0 https://doi.org/10.1007/s10924-004-8152-2 Zobrazit plný text záznamu Full text from SpringerLink