Studies on Microbial Penicillin Amidase ( I ) Optimization of the Enzyme Production from Escherichia coli

미생물 페니실린 아미다제에 관한 연구 (I) E. coli로부터 효소생산 조건의 최적화

  • Kim, Bong-Hee (Biotechnology Research Department, Korea Institute of Science and Technology) ;
  • Seong, Baik-Lin (Biotechnology Research Department, Korea Institute of Science and Technology) ;
  • Mheen, Tae-Iek (Biotechnology Research Department, Korea Institute of Science and Technology) ;
  • Moon H. Ban (Biotechnology Research Department, Korea Institute of Science and Technology)
  • Published : 1981.03.01

Abstract

To maximize the production of penicillin amidase from Estherichia coli (ATCC 9637), the media composition and several factors affecting the engyme production during fermentation were studied. The optimal media composition was found to be; 3.5% tryptone, 1.5% monosodium glutamate and 0.5% yeast extract. The addition of 0.15% phenylacetic acid as an enzyme inducer at the initial stage of cultivation increased the engyme productivity about 5 fold. It was found that the engyme activity reached maximum within 16hr of cultivation. The maximum production of the enzyme obtained was about 102.5 units/l broth under the optimized condition. The enzyme production was markedly increased by the optimization as compared with those previously reported.

대장균으로부터 페니실린 아미다제의 생산을 최적화하기 위하여 배지조성 및 발효 중 효소생산에 미치는 제반영향들에 대하여 연구하였다. 최적배지조성은 3.5% 트립톤, 1.5% 글루타민산 소듐, 0.5% 이스트추출물 그리고 0.15%의 페닐초산이었다. 효소생산 유도물질로서 0.15%의 페닐초산을 발효초기에 가해줄 때 효소생산성이 약5배 증가하였다. 최적화된 배지 및 발효조건에서 발효 16시간만에 최대의 효소생산을 나타내었고 이때의 생산성은 약 102.5 units/l 발효액이었다. 이러한 최적조건에서 발효할 때 현재까지 보고된 효소생산성과 비교하여 상당한 생산능력의 향상을 보였다.

Keywords