Mixotrophic cultivation of Chlorella vulgaris using industrial dairy waste as organic carbon source

► Cheese whey was used as carbon source for Chlorella vulgaris growth. ► Mixotrophic microalgae grew faster than photoautotrophic cells. ► Maximum starch productivity was achieved under mixotrophic conditions. ► Highest pigment content (0.74%) was obtained in the photoautotrophic culture. Growth par...

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Vydáno v:Bioresource technology Ročník 118; s. 61 - 66
Hlavní autoři: Abreu, Ana P., Fernandes, Bruno, Vicente, António A., Teixeira, José, Dragone, Giuliano
Médium: Journal Article
Jazyk:angličtina
Vydáno: England Elsevier Ltd 01.08.2012
Témata:
analysis
Autotrophic Processes
Autotrophic Processes - drug effects
Autotrophic Processes - radiation effects
Biofuels
biomass production
biosynthesis
byproducts
carbon
Carbon - metabolism
Carbon - pharmacology
Cell Culture Techniques
Cell Culture Techniques - methods
Cheese whey
Chlorella vulgaris
Chlorella vulgaris - drug effects
Chlorella vulgaris - growth & development
Chlorella vulgaris - metabolism
Chlorella vulgaris - radiation effects
culture media
Dairying
drug effects
Galactose
Galactose - metabolism
glucose
Glucose - metabolism
growth & development
Industrial Waste
Industrial Waste - analysis
industrial wastes
Light
lipids
Lipids - analysis
Lipids - biosynthesis
metabolism
methods
Microalgae
Microalgae - drug effects
Microalgae - growth & development
Microalgae - metabolism
Microalgae - radiation effects
Mixotrophic
nutrients
Organic Chemicals
Organic Chemicals - metabolism
Organic Chemicals - pharmacology
organic wastes
pharmacology
Pigments, Biological
Pigments, Biological - metabolism
proteins
Proteins - analysis
radiation effects
starch
Starch - biosynthesis
Starch - metabolism
whey powder
Cheese whey
Microalgae
Mixotrophic
Biofuels
Chlorella vulgaris
ISSN:0960-8524, 1873-2976, 1873-2976
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Shrnutí:► Cheese whey was used as carbon source for Chlorella vulgaris growth. ► Mixotrophic microalgae grew faster than photoautotrophic cells. ► Maximum starch productivity was achieved under mixotrophic conditions. ► Highest pigment content (0.74%) was obtained in the photoautotrophic culture. Growth parameters and biochemical composition of the green microalga Chlorella vulgaris cultivated under different mixotrophic conditions were determined and compared to those obtained from a photoautotrophic control culture. Mixotrophic microalgae showed higher specific growth rate, final biomass concentration and productivities of lipids, starch and proteins than microalgae cultivated under photoautotrophic conditions. Moreover, supplementation of the inorganic culture medium with hydrolyzed cheese whey powder solution led to a significant improvement in microalgal biomass production and carbohydrate utilization when compared with the culture enriched with a mixture of pure glucose and galactose, due to the presence of growth promoting nutrients in cheese whey. Mixotrophic cultivation of C. vulgaris using the main dairy industry by-product could be considered a feasible alternative to reduce the costs of microalgal biomass production, since it does not require the addition of expensive carbohydrates to the culture medium.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0960-8524
1873-2976
1873-2976
DOI:10.1016/j.biortech.2012.05.055