| Abstract |
The strain of Aspergillus, 6368A, producing acid protease showing high activity was isolated from soil, as a result of wide research about mold group. This strain was identified as a species of Aspergillus tubingensis by the investigation of morphological characteristics. The change of the enzyme production under the various media and culture condition was also studied. The optimum pH and stability of crude acid protease are 2.5, 2.0-4.5 and the optimum temperature and thermal inactivation was shown 50℃, 55℃, respectively. CuCl₂, SrCl₂and NiCl₂slightly increased the enzyme activity, on the other hand ZnCl₂, CaCl₂, MgCl₂, SLS and KmnO₄decreased it. |
