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Amylase Production from Haloarcular sp. EH-1

고호염성 Haloarcular sp. EH-1으로 부터 amylase 생산

  • 정명주 (경성대학교 교양과정부)
  • Published : 2002.10.01

Abstract

The extremely halophilic archaebacterium Haloarcular sp. EH-1 was isolated from solar salts. Amylae production from Halonrcular sp. EH-1 have been studied. The results obtained were as follows. The optimal medium composition for the production of amylase from Haloarcular sp. EH-1 were soluble starch 1.5%, yeast extract 1.0%, MgSO$_4$ 7h$_2$O 2.0%, KCI 0.1%, NaCl 25% (pH 7.5). The incubation temperature, aeration rate and agitation speed were 4$0^{\circ}C$, 100 $m\ell$ medium / 500 $m\ell$ shaking flask, and 110 rpm. The cell growth and enzymatic activity was highest at 9 days of incubation. So amylase production appeared to be a growth-related phenomenon.

천일염에서 분리된 고호염성균인 Hainrcular sp. EH-1 으로부터 amylase 생성을 위한 배양조건을 검토하여 최적조건을 설정하였다. 그 결과는 다음과 같다. 아밀라아제 생산을 위한 배양 조건은 4$0^{\circ}C$, pH 7.5이었으며, 최적 생육배지를 soluble starch 1.5%, yeast extract 1.0%, MgSO$_4$7$H_2O$ 2.0%, KCI 0.1%, NaCl 25%로 조성하여 500 $m\ell$ 삼각 플라스크에 100 $m\ell$ 씩 분주하여 110 rpm/min으로 진탕 배양시켰다. 생육과 효소활성은 9일 배양 후 최대치를 나타내어서, 균의 생육정도와 효소생산 사이에서 증식연관형을 나타내었다.

Keywords

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