View in EDS

Effects of temperature, CO2/O2 concentrations and light intensity on cellular multiplication of microalgae, Euglena gracilis

Saved in:
Bibliographic Details
Title: Effects of temperature, CO2/O2 concentrations and light intensity on cellular multiplication of microalgae, Euglena gracilis
Authors: Kitaya, Y. kitaya@envi.osakafu-u.ac.jp, Azuma, H.1, Kiyota, M.1
Source: Advances in Space Research. 2005, Vol. 35 Issue 9, p1584-1588. 5p.
Subjects: Microalgae, Microorganisms, Euglena gracilis, Fish farming
Abstract: Abstract: Microalgae culture is likely to play an important role in aquatic food production modules in bioregenerative systems for producing feeds for fish, converting CO2 to O2 and remedying water quality as well as aquatic higher plants. In the present study, the effects of culture conditions on the cellular multiplication of microalgae, Euglena gracilis, was investigated as a fundamental study to determine the optimum culture conditions for microalgae production in aquatic food production modules including both microalgae culture and fish culture systems. E. gracilis was cultured under conditions with five levels of temperatures (25–33°C), three levels of CO2 concentrations (2–6%), five levels of O2 concentrations (10–30%), and six levels of photosynthetic photon flux (20–200μmolm−2 s−1). The number of Euglena cells in a certain volume of solution was monitored with a microscope under each environmental condition. The multiplication rate of the cells was highest at temperatures of 27–31°C, CO2 concentration of 4%, O2 concentration of 20% and photosynthetic photon flux of about 100μmolm−2 s−1. The results demonstrate that E. gracilis could efficiently produce biomass and convert CO2 to O2 under relatively low light intensities in aquatic food production modules. [Copyright &y& Elsevier]
Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Abstract: Microalgae culture is likely to play an important role in aquatic food production modules in bioregenerative systems for producing feeds for fish, converting CO2 to O2 and remedying water quality as well as aquatic higher plants. In the present study, the effects of culture conditions on the cellular multiplication of microalgae, Euglena gracilis, was investigated as a fundamental study to determine the optimum culture conditions for microalgae production in aquatic food production modules including both microalgae culture and fish culture systems. E. gracilis was cultured under conditions with five levels of temperatures (25–33°C), three levels of CO2 concentrations (2–6%), five levels of O2 concentrations (10–30%), and six levels of photosynthetic photon flux (20–200μmolm−2 s−1). The number of Euglena cells in a certain volume of solution was monitored with a microscope under each environmental condition. The multiplication rate of the cells was highest at temperatures of 27–31°C, CO2 concentration of 4%, O2 concentration of 20% and photosynthetic photon flux of about 100μmolm−2 s−1. The results demonstrate that E. gracilis could efficiently produce biomass and convert CO2 to O2 under relatively low light intensities in aquatic food production modules. [Copyright &y& Elsevier]
ISSN:02731177
DOI:10.1016/j.asr.2005.03.039