Production of Clostridium pasteurianum in a defined medium.

نویسندگان

  • K Sargeant
  • J W Ford
  • V M Longyear
چکیده

A method for the growth of Clostridium pasteurianum in a 140-liter (total capacity) stainless-steel vessel is described. By preventing the pH value from falling below 5.6, the growth of cultures was prolonged. Larger amounts of the carbon source (sucrose) and the nitrogen source (ammonium ion) were supplied and consumed, and cell yields of up to 5.56 g (dry weight) per liter were obtained. The highest cell yield previously reported was 1.7 g (dry weight) per liter obtained under nitrogen-fixing conditions in 500-ml cultures. The ferredoxin content of the cells was comparable with that obtained by earlier workers.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Large scale production of Blackleg vaccine by fermenter and enriched culture medium in Iran

In all biological systems growth is defined as increase of chemical compounds. Bacteria can achieve to balanced growth if they are growing in a medium, which are completely adapted to it. Clostridium chauvoei, (Clostridium feseri) is an anaerobic, spore forming, motile, and polymorph bacteria, which its size varies from 0.5-1 to 3-8 micron and could be observed as individual bacterium, diplo, a...

متن کامل

BUTANOL PRODUCTION FROM GLYCEROL BY Clostridium pasteurianum IN DEFINED CULTURE MEDIA- A PHENOTYPIC APPROACH

Title of Document: BUTANOL PRODUCTION FROM GLYCEROL BY Clostridium pasteurianum IN DEFINED CULTURE MEDIAA PHENOTYPIC APPROACH. David Leonardo Ramos Sanchez, Master of Science, 2009 Directed By: Associate Professor Nam Sun Wang Department of Chemical and Biomolecular Engineering ABSTRACT The fluctuations in oil prices have stimulated the production of renewable biofuels, in particular the produc...

متن کامل

Fermentative hydrogen production from glucose and starch using pure strains and artificial co-cultures ofClostridium spp.

BACKGROUND Pure bacterial strains give better yields when producing H2 than mixed, natural communities. However the main drawback with the pure cultures is the need to perform the fermentations under sterile conditions. Therefore, H2 production using artificial co-cultures, composed of well characterized strains, is one of the directions currently undertaken in the field of biohydrogen research...

متن کامل

Towards improved butanol production through targeted genetic modification of Clostridium pasteurianum

Declining fossil fuel reserves, coupled with environmental concerns over their continued extraction and exploitation have led to strenuous efforts to identify renewable routes to energy and fuels. One attractive option is to convert glycerol, a by-product of the biodiesel industry, into n-butanol, an industrially important chemical and potential liquid transportation fuel, using Clostridium pas...

متن کامل

Influence of nutritional and operational parameters on the production of butanol or 1,3-propanediol from glycerol by a mutant Clostridium pasteurianum.

Butanol and 1,3-propanediol (1,3-PDO) are simultaneously produced by Clostridium pasteurianum from glycerol. In this study, random chemical mutagenesis of C. pasteurianum DSM 525 was conducted to improve its tolerance to butanol. Selected nutritional and operational parameters were evaluated to identify strategies that favour the production of each metabolite. From those experiments, it was pos...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Applied microbiology

دوره 16 2  شماره 

صفحات  -

تاریخ انتشار 1968