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Induction of beta, epsilon-carotene-3, 3 '-diol (lutein) production in green algaeChlorella salinawith airlift photobioreactor: interaction of different aeration and light-related strategies
Gayathri, S.1; Rajasree, S. R. Radhika1,2; Suman, T. Y.1,3; Aranganathan, L.1; Thriuganasambandam, R.1; Narendrakumar, G.3,4,5
2020-01-13
摘要The impact and interaction of light irradiance strength (light intensities), lighting cycle (photoperiod), and aeration rate on biomass concentration and lutein production efficacy of the microalgaChlorella salinain a closed laboratory-scale airlift photobioreactor were investigated via the response surface method. Among the factors assessed, light intensity and aeration rate had significant influence on cell concentration, though a concurrent increment in light intensity noticeably decreased the lutein content. All the parameters were observed to be statistically significant. Best operating conditions for the growth of alga was evaluated to be as follows: light intensity, 200 mu mol m(-2) s(-1); photoperiod, 12:12 h L D; and the aeration rate, 3 lpm. These conditions could substantially enhance the microalgal growth rate (0.82 day(-1)) and biomass production (665.89 mg). Specific lutein productivity and a recovery of 9.73 mg/L/day were achieved at a day light cycle of 16 h. According to the results of the experimental design, the optimum conditions led to a twofold increase in biomass and lutein productivity compared with unoptimized condition.
关键词Chlorella salina Lutein Light cycle Light intensity Response surface methodology Aeration
DOI10.1007/s13399-019-00580-5
发表期刊BIOMASS CONVERSION AND BIOREFINERY
ISSN2190-6815
页码10
通讯作者Rajasree, S. R. Radhika(radhiin@gmail.com)
收录类别SCI
WOS记录号WOS:000574150800001
语种英语