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4 results on '"starch particle size distribution"'

2. The Annealing of Acetylated Potato Starch with Various Substitution Degrees

Author

Tomasz Zięba, Aleksandra Wilczak, Justyna Kobryń, Witold Musiał, Małgorzata Kapelko-Żeberska, Artur Gryszkin, and Marta Meisel

Subjects
annealing, acetylation, starch particle size distribution, Organic chemistry, QD241-441
Abstract

This 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.

Published
2021
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3. The Annealing of Acetylated Potato Starch with Various Substitution Degrees

Author

Artur Gryszkin, Aleksandra Wilczak, Tomasz Zięba, Witold Musiał, Justyna Kobryń, Marta Meisel, and Małgorzata Kapelko-Żeberska

Subjects
Starch, Annealing (metallurgy), Acetic Anhydrides, Pharmaceutical Science, 02 engineering and technology, Article, Phase Transition, Analytical Chemistry, Modified starch, lcsh:QD241-441, chemistry.chemical_compound, 0404 agricultural biotechnology, lcsh:Organic chemistry, Drug Discovery, medicine, Amylase, Physical and Theoretical Chemistry, Particle Size, Potato starch, Solanum tuberosum, biology, Organic Chemistry, Granule (cell biology), Temperature, food and beverages, Acetylation, 04 agricultural and veterinary sciences, starch particle size distribution, 021001 nanoscience & nanotechnology, 040401 food science, Acetic anhydride, chemistry, Chemical engineering, Chemistry (miscellaneous), biology.protein, Molecular Medicine, annealing, Swelling, medicine.symptom, 0210 nano-technology
Abstract

This 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.

Published
2021

4. The Annealing of Acetylated Potato Starch with Various Substitution Degrees.

Author

Zięba, Tomasz, Wilczak, Aleksandra, Kobryń, Justyna, Musiał, Witold, Kapelko-Żeberska, Małgorzata, Gryszkin, Artur, Meisel, Marta, and Šubarić, Drago

Subjects
STARCH, CORNSTARCH, WHEAT starch, ACETIC anhydride, AMYLASES
Abstract

This 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. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

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