hydrogen oxidizing bacteria as poly(hydroxybutyrate) producers

Authors

kianoosh khosravi darani

ebrahim vasheghani-farahani

kenji tanaka

abstract

batch culture of ralstonia eutropha using the recycled gas closed circuit culture system was conducted in order to develop a practical fermentation system for industrial autotrophic culture for poly (hydroxybutrate) production. the gas phase of the culture system consisted of substrate gas so that gases in this culture could be recycled as long as the amount of the gas consumed would be replenished. all gases supplied into this system could be completely used without any loss as exhaust. studies on the effect of oxygen concentration showed that high concentration of this gas suppressed the specific growth rate while a low oxygen concentration promoted it.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Hydrogen Oxidizing Bacteria as Poly(hydroxybutyrate) Producers

Batch culture of Ralstonia eutropha using the recycled gas closed circuit culture system was conducted in order to develop a practical fermentation system for industrial autotrophic culture for poly (hydroxybutrate) production. The gas phase of the culture system consisted of substrate gas so that gases in this culture could be recycled as long as the amount of the gas consumed would be repleni...

full text

Hydrogen metabolism in aerobic hydrogen-oxidizing bacteria.

A survey on organisms able to use molecular hydrogen as electron donor in the energy-yielding process is presented. In the group of the aerobic hydrogen-oxidizing bacteria so far two types of hydrogenases have been encountered, a NAD-reducing, soluble enzyme (H2 : NAD oxidoreductase) and a membrane-bound enzyme unable to reduce pyridine nucleotides. With respect to the distribution of both type...

full text

Influence of hydrogen-oxidizing bacteria on the corrosion of low carbon steel: Local electrochemical investigations.

Low carbon steel has been considered a suitable material for component of the multi-barrier system employed on the geological disposal of high-level radioactive waste (HLW). A non negligible amount of dihydrogen (H2) is expected to be produced over the years within the geological repository due to the anoxic corrosion of metallic materials and also to the water radiolysis. The influence of the ...

full text

Evidence for hydrogen oxidation and metabolic plasticity in widespread deep-sea sulfur-oxidizing bacteria.

Hydrothermal vents are a well-known source of energy that powers chemosynthesis in the deep sea. Recent work suggests that microbial chemosynthesis is also surprisingly pervasive throughout the dark oceans, serving as a significant CO(2) sink even at sites far removed from vents. Ammonia and sulfur have been identified as potential electron donors for this chemosynthesis, but they do not fully ...

full text

Aspergilli as ochratoxin producers.

To determine whether ochratoxin is produced by species of Aspergillus other than A. ochraceus, 44 strains representative of the nine species composing the A. ochraceus group were grown on both pearled wheat and cracked corn in duplicate shaken flasks at 28 C for 5 days. Rice was a poor substrate for production of ochratoxin. Molded substrates were extracted with acetonitrile-water; partially pu...

full text

Colorless sulfur oxidizing bacteria from diverse habitats

Colorless sulfur oxidizing bacteria comprise an important part of sulfur cycle in nature and hold significant value for biotechnological applications such as, increasing soil fertility, reduction of environmental pollution by biologically oxidizing toxic sulfides present in waste waters from different industries and sewage, leaching of economically important metals from poor ores. Present artic...

full text

My Resources

Save resource for easier access later


Journal title:
iranian journal of biotechnology

Publisher: national institute of genetic engineering and biotechnology

ISSN 1728-3043

volume 4

issue 3 2006

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023