Application of Scale-Up Criterion of Constant Oxygen Mass Transfer Coefficient (kLa) for Production of Itaconic Acid in a 50 L Pilot-Scale Fermentor by Fungal Cells of Aspergillus terreus
자연과학 > 생물
( Woo Shik Shin ) , ( Do Hoon Lee ) , ( Sang Yong Kim ) , ( Yong Seob Jeong ) , ( Gie Taek Chun )
한국미생물생명공학회(구 한국산업미생물학회)
Journal of Microbiology and Biotechnology 2013년, 제23권 제10호, 1445~1453페이지(총9페이지)
05212372.pdf [무료 PDF 뷰어 다운로드]
  • ※ 본 자료는 참고용 논문으로 수정 및 텍스트 복사가 되지 않습니다.
  • 구매가격
    135원 (구매자료 3% 적립)
    이메일 발송  스크랩 하기
    자료 다운로드  네이버 로그인
    The scale-up criterion of constant oxygen mass transfer coefficient (kLa) was applied for the production of itaconic acid (IA) in a 50 L pilot-scale fermentor by the fungal cells of Aspergillus terreus. Various operating conditions were examined to collect as many kLa data as possible by adjusting the stirring speed and aeration rate in both 5 L and 50 L fermentor systems. In the fermentations performed with the 5 L fermentor, the highest IA production was obtained under the operating conditions of 200 rpm and 1.5 vvm. Accordingly, we intended to find out parallel agitation and aeration rates in the 50 L fermentor system, under which the kLa value measured was almost identical to that (0.02 sec-1) of the 5 L system. The conditions of 180 rpm and 0.5 vvm in the 50 L system turned out to be optimal for providing almost the same volumetric amount of dissolved oxygen (DO) into the fermentor, without causing shear damage to the producing cells due to excessive agitation. Practically identical fermentation physiologies were observed in both fermentations performed under those respective operating conditions, as demonstrated by nearly the same values of volumetric (Qp) and specific (qp) IA production rates, IA production yield (Yp/s), and specific growth rate (μ). Specifically, the negligible difference of the specific growth rate (μ) between the two cultures (i.e., 0.029 h-1 vs. 0.031 h-1) was notable, considering the fact that μ normally has a significant influence on qp in the biosynthesis of secondary metabolites such as itaconic acid.
    오늘 본 자료
    • 오늘 본 자료가 없습니다.
    본 학술논문은 한국학술정보㈜ 각 학회간에 저작권 계약이 체결된 것으로 HAPPY학술이 제공하고 있습니다.
    본 저작물을 불법적으로 이용시는 법적인 제재가 가해질 수 있습니다.
    사업자등록번호 220-87-87785 대표.신현웅 주소.서울시 서초구 방배로10길 18, 402호 대표전화.070-8809-9397
    개인정보책임자.박정아 통신판매업신고번호 제2017-서울서초-1765호 이메일
    copyright (c) 2009 happynlife. steel All reserved.