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논문 기본 정보

자료유형
학술저널
저자정보
Ibrahim, A.N. (Botany Department, Faculty of Agriculture, Al-Azhar University) Ahmed, F.H. (Mycology Dept. National Organization for Drug Control and Research) Ibrahim, M.M.K. (Mycology Dept. National Organization for Drug Control and Research) Arafa, M.A.I. (Faculty of Home Economics, Hellwan University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제13권 제1호
발행연도
1990.1
수록면
33 - 37 (5page)

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The effects of pH values, temperature and some elements on the amylolytic activity and stability of the purified S. aureofacienc 77 amylase were studied in this investigation. The purified enzyme showed its maximum activity at pH 6 within 8 min incubation at $40^{\circ}C$. None of the tested 6 metals showed on stimulatory effect on the enzymatic activity, $Fe^{+++}$, $Cu^{++}$ and $Hg^{++}$ at high dose inhibited the enzyme activity to great extent as compared with $Zn^{++}$, $Mn^{++}$ and $Fe^{++}$ whih gave less effect in this respect. The enzyme liquor was found to be thermolabile, since it lost completely its activity after 4 days incubation under room temperature and showed maximum activity during this period as a result of additions of $Ca^{++}$and NaCl, Gradual reduction was however recorded until activity reached 30% after 60 days of incubation.

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