Earticle

초록

영어

A study on the continuous fermentation with cell recycle by a tower fermentor to produce ethanol has been carried out. ethanol fermentation was conducted with flocculating yeast strain, Saccharomyces cerevisiae TS4, to compare the ethanol productivity with conventional continuous process. Employing a 15% glucose feed, a cell density of 50 g/l was obtaind. The ethanol productivity of the cell recycle system was found to be 26.5g EtOH/1-hr, which was nearly 7.5 times higher than the conventional continuous process without cell recycle. A cell recycle ratio of 7 to 8 resulted in the highest ethanol productivity and cell concentration. Thus the cell recycle ratio was found to be a key factor in controlling the production of clarified overflow liquid. An aeration rate above 3.8 10-3 VVM seemed to decrease the ethanol productivity. The continuous fermentation with cell recycle was successfully used in the separation of cells from fermentation broth with enhancement of mixing in the tower fermentor

한국어

Tower fermentor를 이용한 연속 알콜발효에서 cell re-cycle과 aeration에 대한 영향을 검토하였다. 균주는 floc-culationg 효모인 Saccharomyces cerecisiae TS4를 를 사용하였다. 15% glucose를 사용한 cell recycle system의 연속 알콜발효에서 cell 농도는 50%/1였고, ethanol productiv는 26.4g EtOH/l-hr로서 cell농도가 가장 높은 값을 나타내었으며, aeration rate는 3.8 VVM이상부터는 ethanol pro-ductivity가 감소하였다

목차

ABSTRACT
 INTRODUCTION
 MATERIALS AND METHODS
  Organism
  Fementation Media.
  Fementation Procedure
  Analytical Methods
 RESULTS AND DISCUSSION
  Continuous fermentation with cell recycle
  Effect of cell recycle ratio on ethanol production
  Effect of aeration rate on ethanol production
 요약
 REFERENCES

저자

• Retcharat Karnjanasiriwan [ 태국 아시안 공과대학원 농업 및 식품공학과 ]
• Yeon Woo Ryu [ 유연우 | 아주대학교 생물공학과 ]
• Kong Hwan Kim [ 김공환 | 아주대학교 생물공학과 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  KSBB Journal

• 간기

  격월간

• pISSN

  1225-7117

• 수록기간

  2009~2013

• 십진분류

  KDC 476 DDC 576