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Physicochemical properties and digestibility of potato starch treated by ball milling with tea polyphenols
- Source :
- International Journal of Biological Macromolecules. 129:207-213
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Native potato starch (NPS) with tea polyphenols (TPs) was treated in a planetary ball mill, and the effects of co-grinding on properties and digestibility of starch were studied. The X-ray diffraction (XRD) results showed that the crystal structure of starch granules was destroyed after 7 h of ball grinding, and their crystallinity degree reduced from 38.1% to 8.3%. The scanning electron microscopy (SEM) analyses indicated that the damaged starch granules and TPs displayed agglomerates after 7 h of milling. The Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) results demonstrated the existence of an interaction between starch chains and TPs, which improved the thermal stability and gelatinization temperatures of starch. The ball-milled starches with different amount of TPs showed significant variability to in vitro digestion (the contents of slowly digestible starch and resistant starch). Therefore, the produced ball-milled mixtures may be a desired dietary product for postprandial glycemic control.
- Subjects :
- Thermogravimetric analysis
food.ingredient
Chemical Phenomena
Starch
02 engineering and technology
Biochemistry
03 medical and health sciences
chemistry.chemical_compound
Crystallinity
food
Differential scanning calorimetry
Structural Biology
Thermal stability
Food science
Resistant starch
Molecular Biology
Potato starch
Ball mill
Solanum tuberosum
030304 developmental biology
0303 health sciences
Tea
Spectrum Analysis
Polyphenols
food and beverages
General Medicine
021001 nanoscience & nanotechnology
chemistry
Thermogravimetry
0210 nano-technology
Subjects
Details
- ISSN :
- 01418130
- Volume :
- 129
- Database :
- OpenAIRE
- Journal :
- International Journal of Biological Macromolecules
- Accession number :
- edsair.doi.dedup.....09e4d541151450e45ec0fbcd43c7099b