AI Article Synopsis
- Microalgae currently struggle to meet the bait demand in aquaculture due to limitations like inadequate light intensity and other challenging conditions.
- Research identified six mixotrophic microalgae strains, highlighting Thalassiosira pseudonana and Chlorella sp. as the most suitable for cultivation with added organic carbon.
- The study found that Thalassiosira pseudonana and Chlorella sp. could significantly surpass their photoautotrophic counterparts in cell density when glycerol and acetic acid were used, resulting in higher biomass and enhanced lipid and amino acid accumulation.
Article Abstract
Microalgae cannot meet the bait demand for aquaculture due to light intensity limitation and other disadvantageous conditions. This research selected 6 mixotrophic microalgae, and the optimal strains and organic carbon were screened. The results showed that Thalassiosira pseudonana and Chlorella sp. are suitable for mixotrophic culture. The maximum cell density of Thalassiosira pseudonana was found to be 1.67 times than that of the photoautotrophic group when glycerol was added. The maximum cell density of Chlorella sp. with acetic acid was 1.69 times than that of the photoautotrophic group. When the concentration of acetic acid was 5.0 g·L and the concentration of KNO was 0.2 g·L, the maximum biomass of Chlorella sp. could reach 3.54 × 10 cells·mL; the maximum biomass of Thalassiosira pseudonana was 5.53 × 10 cells·mL with 10.0 g·L glycerol and 0.2 g·L KNO. Metabolomic analysis further revealed that mixotrophic bait microalgae could promote the accumulation of lipids and amino acids.
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| http://dx.doi.org/10.1016/j.biortech.2022.128301 | DOI Listing |
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