Journal
JOURNAL OF MARINE SCIENCE AND ENGINEERING
Volume 4, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/jmse4040084
Keywords
industrial process water; microalgae biomass; lipids; lutein; chlorophyll; Chlorella; amino acids; tocopherols; fatty acids
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Funding
- Green Development and Demonstration program (GUDP) under the Danish Food Ministry [34009-13-0616]
- E4Water under EU's 7th framework programme
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Chlorella pyrenoidosa and Chlorella vulgaris were cultivated in pre-gasified industrial process water with high concentration of ammonia representing effluent from a local biogas plant. The study aimed to investigate the effects of growth media and cultivation duration on the nutritional composition of biomass. Variations in proteins, lipid, fatty acid composition, amino acids, tocopherols, and pigments were studied. Both species grew well in industrial process water. The contents of proteins were affected significantly by the growth media and cultivation duration. Microalga Chlorella pyrenoidosa produced the highest concentrations of protein (65.2% +/- 1.30% DW) while Chlorella vulgaris accumulated extremely high concentrations of lutein and chlorophylls (7.14 +/- 0.66 mg/g DW and 32.4 +/- 1.77 mg/g DW, respectively). Cultivation of Chlorella species in industrial process water is an environmentally friendly, sustainable bioremediation method with added value biomass production and resource valorization, since the resulting biomass also presented a good source of proteins, amino acids, and carotenoids for potential use in aquaculture feed industry.
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