Physicochemical properties of nanopowdered eggshell |
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Authors: | Mohammad Al Mijan Dong‐Hwi Kim Hae‐Soo Kwak |
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Affiliation: | Department of Food Science and Technology, Sejong University, , Seoul, 143‐747 Korea |
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Abstract: | This study was carried out to investigate the physicochemical properties of nanopowdered eggshell (NPES). These characteristics were determined based on the particle size, particle morphology, zeta potential, moisture sorption behaviour, purity and crystallinity. Homogeneous, aggregated and spherical crystals of NPES particles were observed through scanning electron microscope and transmission electron microscope. The average particle sizes of NPES and powdered eggshell (PES) were 202.3 ± 28.9 nm and 113.89 ± 79.37 μm, respectively. Zeta potentials of NPES (?15.41 mV) suggested an incipient instability of the colloidal system. Moisture sorption analysis indicated a higher water adsorption capacity of NPES than that of PES. X‐ray diffractometer (XRD) analysis confirmed the presence of calcite in both NPES and PES. The chemical compositions of the NPES and PES particles were strongly associated with the presence of calcium carbonate, as determined by the Fourier transform infrared (FTIR) spectra. Therefore, eggshell nanopowder has a great potential to be utilised as a component for biomedical applications. |
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Keywords: | Calcium carbonate fourier transform infrared nanopowdered eggshell particle size physicochemical properties scanning electron microscope X‐ray diffraction |
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