Abstract
Phase state of hen egg-white lysozyme aqueous solution system was studied at high pressures. The orthorhombic and the tetragonal crystals, the needle-like precipitates , and other types of precipitates were observed at high pres sure in the lysozyme solution in 5wt% NaCl at pH4.2. The solubilities of the orthorhombic crystal, the tetragonal crystal, and the needle-like precipitate were measured , all of which increased with increasing pressure.
