Figure 2
The viscosities of the lysozyme solutions. (a) The viscosities measured under various lysozyme concentrations and rotating speeds of the viscometer. Since the lysozyme solution has thixotropy, each viscosity at 20, 50 and 100 r min−1 was approximated with least-squares lines by the quadratic polynomial. (b) The viscosity of 25 mg ml−1 lysozyme solution at 20, 50 and 100 r min−1. These values have 12.66, 14.66 and 8.38% errors, respectively. The viscosity at 0 r min−1 was extrapolated from the least-squares lines. We calculated that the value was (5.86 ± 0.86) × 10−3 Pa s. The error of 15% was estimated from the maximum error of the measurements. |