Effects of gas compositions on the productivity of biomass and intra-cellular fatty acids in a green alga Chlorococcum littorale under the photoautotrophic conditions

Masaki Ota, Hiromoto Watanabe, Yoshitaka Kato, Masaru Watanabe, Yoshiyuki Sato, Richard Lee Jr. Smith, Hiroshi Inomata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The effects of gas composition on the productivity of biomass and intra-cellular fatty acids were investigated in semi-batch cultures of a green alga Chlorococcum littorale (C. littorale) with gas flowing at 100 ml/min under the conditions of temperature of 22 °C and light intensity of 4200 Ix. Growth rates were enhanced and total fatty acids contents increased by flowing an O2-free gas mixture of 2% CO2 and 98% N2. This suggested that the removal of dissolved oxygen lead to promotions of both growth and fatty acids production. It was also found that fatty acids tended to be accumulated under nitrogen deficient conditions in the culture medium based on artificial sea water. Under these photoautotrophic conditions without oxygen in the gas mixtures, the productivity of fatty acids by photosynthesis were more than the oil palm seed used as a main resource of biodeisel, which implies the feasibility of algal oil for biodiesel.

Original languageEnglish
Title of host publication2006 AIChE Annual Meeting
Publication statusPublished - 2006 Dec 1
Event2006 AIChE Annual Meeting - San Francisco, CA, United States
Duration: 2006 Nov 122006 Nov 17

Other

Other2006 AIChE Annual Meeting
CountryUnited States
CitySan Francisco, CA
Period06/11/1206/11/17

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

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