期刊
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
卷 6, 期 -, 页码 8-16出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.algal.2014.08.006
关键词
Astaxanthin; Carotenoids; Chlorella zofingiensis; Yield on light; Triacylglycerol (TAG)
资金
- FeyeCon DI
- Rijksdienst voor Ondernemend Nederland [FND09014]
The effect of biomass-specific photon absorption rate on triacylglycerol (TAG) and secondary carotenoid yield was studied. Chlorella zofingiensis (Chlorophyta) was cultivated batch-wise with sufficient initial nitrogen to produce 2.5, 3.4 and 4.1 g L-1 prior to nitrogen depletion, which resulted in biomass-specific photon absorption rates of 4.7, 3.5 and 2.9 mu mol(ph) g dry weight(-1) s(-1), respectively. During nitrogen starvation, the TAG as well as secondary carotenoid yield on light did not differ between the cultures, which indicates that in the studied range the biomass-specific photon absorption rate did not affect the amounts of energy used for TAG and secondary carotenoid production. The maximal TAG yield on light (320 mg mol(ph)(-1)) was higher than values reported before for microalgae. Besides, for the first time the secondary carotenoid yield on light was reported (maximally 2.75 mg mol(ph)(-1)). (C) 2014 Elsevier B.V. All rights reserved.
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