KIOST develops superior, high-value-added strain of biohydrogen-producing bacteria
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- Date : 2016-04-11
A research team led by senior researcher Dr. Kang Sung Gyun at the Korea Institute of Ocean Science and Technology (KIOST) has announced the development of a superior bacterial strain1) for the production of biohydrogen.
The biohydrogen-producing bacterial strain, 156T, was developed by applying adaptive evolution to the utilization of carbon monoxide (CO) by the archaeon Thermococcus onnurineus NA12), which inhabits high-temperature areas in deep sea hydrothermal vents, making this the first such achievement in the field of ultra-high-temperature hyperthermophilic archaea3) in the world.
1) Strain: Isolated and cultured bacteria or fungus
2) NA1: Thermococcus onnurineus NA1
3) Archaea: A biological classification and domain of single-celled microorganisms that were recently found to be different from bacteria.
![[Thermococcus onnurineus NA1]](/dext5editordata/2016/06/20160608_135922021_53663.jpg)
[Thermococcus onnurineus NA1]
The development of the 156T strain was made possible by observing the long-term evolutionary process of NA1 under CO conditions and noticing how its H2 production was enhanced with the increase of serial transfers of cell cultures.
In the future, 156T may be applied to research in various fields by using low-purity byproduct gases produced at industrial sites. Also, it has been pointed to as a means of utilizing the high added value of CO, as it can use low-purity byproduct gases as a base material without any preprocessing.
Dr. Kang commented, “Going forward, KIOST will set up testing sites at industrial facilities that can provide the base materials for biohydrogen production, such as byproduct gases. We plan to continuously develop biohydrogen commercialization technologies through various means, including test operations of long-term biohydrogen production.
This domestic technological achievement is the result of follow-up research conducted after the discoveries of the biohydrogen and bioenergy production mechanisms of NA1 in 2010 and 2014, respectively.
The research was conducted as part of the “Development of Biohydrogen Production Technology Using Hyperthermophilic Archaea,” which is a project undertaken by KIOST and funded by the Ministry of Oceans and Fisheries in the Republic of Korea with the goal of enhancing the potential of the country’s oceans and fisheries industry. The results were published in the February 2016 Issue of Reports.
*Title of article: Adaptive engineering of a hyperthermophilic archaeon on CO and discovering the underlying mechanism by multi-omics analysis
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- Last Update : 2024-01-31