Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
권호 표지

Studies on acid protease produced from Aspergillus tubingensis I

Aspergillus tubingensis의 acid protease에 관한 연구 I

  • Chung, Yun-Su (Dept. of Animal Science, Kon Kuk University) ;
  • Cho, Young (Dept. of Chemistry, Chung Nam National University) ;
  • Han, Suk-Hyun (Dept. of Animal Science, Kon Kuk University)
  • 정윤수 (건국대학교 축산가공학과) ;
  • 조영 (충남대학교 화학과) ;
  • 한석현 (건국대학교 축산가공학과)
  • Published : 1982.09.01
Download PDF
⟨ Previous Next ⟩

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 temeprature and thermal inactivation waas shown $50^{\circ}C,\;55^{\circ}C$, respectively. From the result of the study on the effects of metal ions, it was found that $MnCl_2,\;CoCl_2,\;CuCl_2,\;SrCl_2,\;and\;NiCl_2$ slightly increased the enzyme activity, on the other hand $ZnCl_2,\;CaCl_2,\;MgCl_2,\;SLS,\;and\;KMnO_4$ decreased it.

Keywords