초호열성 고세균 Thermococcus sp. DT1331의 유황 화합물 이화 특성

  • 곽이성 (한국인삼연초연구원 Tel. 82-42-866-5535 E-mail : yskwak@gtr.kgtri.re.kr) ;
  • 김영배 (고려대학교 생명공학원)
  • Published : 1997.08.01

Abstract

Some sulfur coompounds dissimilation characteristcs of Thermococcus sp. DT1331 were studied. DT1331 had ether-like lipid compounds in addition to esters in the cell membrane. The specific growth rates of DT1331 decreased with increasing head spaces of the cultures. However, when the ratio of head space volume to medium volume was 5.60, the strain showed no growth. DT1331 showed vigo- rous growth with 1% or more elemental sulfur addition. Cystine could substitute elemental sulfur and DT1331 showed moderate growth with 0.1% or more cystine concentration. The specific growth rate and maximum cell concentration of Thermococcus sp. DT1331 in the presence of elemental sulfur were 0.80 hr$^{-1}$ and 2.0 x 10$^{8}$ cells/ml, respectively, while they were 0.67 hr$^{-1}$ and 1.1 x 10$^{8}$ cells/ml, respectively in the presence of cystine.

Keywords

Hyperthermophilic archaebacterium;Thermococcus sp. DTI331;Elemental sulfur;Cystine

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