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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(08) [August 2010] >
| Title: | Ultrasonic and viscometric study of soya protein in aqueous solution |
| Authors: | Swain, Sarat K
Priyadarshini, Pragnya P |
| Keywords: | Acoustic impedance
Adiabatic compressibility
Relaxation time |
| Issue Date: | Aug-2010 |
| Publisher: | CSIR |
| Abstract: | The interaction of
proteins, compatibility of biomaterials and molecular dynamics, solute in
solvent have been investigated by ultrasonic technique. Ultrasonic velocities,
viscosities and densities of aqueous solution of soya protein were measured as
a function of concentration and resonance frequencies in the range 3-10 MHz
ultrasonic waves. The acoustic parameters such as adiabatic compressibility,
aquatic impedance and viscosity relaxation time were calculated at different
aqueous concentration of soya protein. The adiabatic compressibility of soya
protein has been found to decrease with rise in concentration at both
frequencies. However, the decreasing tendency was stiffer at 10 MHz as compared
to 3 MHz. It may be due to the weak interaction of water molecules with protein
chains at 3 MHz. The acoustic impedance (Z) increases with increase in
concentration at both frequencies of ultrasound. The viscosity relaxation time
of soya protein decreases with concentration at ultrasonic frequency of 10 MHz,
however, at lower frequency of ultrasound at 3 MHz, the value τ increases
linearly with concentration. |
| Page(s): | 539-542 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(08) [August 2010]
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