The Annealing of Acetylated Potato Starch with Various Substitution Degrees
Tomasz Zięba , Aleksandra Wilczak , Justyna Kobryń , Witold Musiał , Małgorzata Kapelko-Żeberska , Artur Gryszkin , Marta Meisel
AbstractThis study aimed to determine the effect of “annealing” acetylated potato starch with a homogenous granule size and various degrees of substitution on the thermal pasting characteristics (DSC), resistance to amylases, rheology of the prepared pastes, swelling power and dynamics of drug release. A fraction of large granules was separated from native starch with the sedimentation method and acetylated with various doses of acetic anhydride (6.5, 13.0 or 26.0 26 cm3/100 g starch). The starch acetates were then annealed at slightly lower temperatures than their pasting temperatures. The annealing process caused an almost twofold increase in the resistance to amylolysis and a threefold increase in the swelling power of the modified starch preparations. The heat of phase transition decreased almost two times and the range of starch pasting temperatures over two times, but the pasting temperature itself increased by ca. 10 °C. The 40 g/100 g addition of the modified starch preparation decreased the rate of drug release from a hydrogel by ca. one-fourth compared to the control sample.
|Journal series||Molecules, ISSN 1420-3049, (N/A 100 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||annealing; acetylation; starch particle size distribution|
|License||Journal (articles only); published final; ; with publication|
|Score||= 100.0, 13-05-2021, ArticleFromJournal|
|Publication indicators||= 0; : 2017 = 1.146; : 2018 = 3.06 (2) - 2018=3.38 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.