Kim, JP Kang, CD Sim, SJ Kim, MS Park, TH Lee, D Kim, D Kim, JH Lee, YK Pak, D 2024-01-21T05:36:03Z 2024-01-21T05:36:03Z 2021-09-03 2005-02 1017-7825 https://pubs.kist.re.kr/handle/201004/136784 Under sulfur deprived conditions, PS II and photosynthetic O-2 evolution by Chlamydomonas reinhardtii UTEX 90 are inactivated, resulting in shift from aerobic to anaerobic condition. This is followed by hydrogen production catalyzed by hydrogenase. We hypothesized that the photosynthetic capacity and the accumulation of endogenous substrates such as starch for hydrogen production might be different according to cell age. Accordingly, we investigated (a) the relationships between hydrogen production, induction time of sulfur deprivation, increase of chlorophyll after sulfur deprivation, and residual PS II activity, and (b) the effect of initial cell density upon sulfur deprivation. The maximum production Volume of hydrogen was 151 ml H-2/l with 0.91 g/l of cell density in the late-exponential phase. We suggest that the effects of induction time and initial cell density at sulfur deprivation oil hydrogen production, up to an optimal concentration, are due to an increase of chlorophyll under sulfur deprivation. English KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY MICROALGAE PHOTOPRODUCTION CHLORELLA Cell age optimization for hydrogen production induced by sulfur deprivation using a green alga Chlamydomonas reinhardtii UTEX 90 Article 1 JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY, v.15, no.1, pp.131 - 135 JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY 15 1 131 135 scie scopus kci ART000950882 000227309000021 2-s2.0-20144386363 Biotechnology & Applied Microbiology Microbiology Biotechnology & Applied Microbiology Microbiology Article MICROALGAE PHOTOPRODUCTION CHLORELLA hydrogen production Chlamydomonas reinhardtii sulfur deprivation cell growth stage