Linking microalgae and cyanobacteria culture conditions and key-enzymes for carbohydrate accumulation

Microalgae are regarded as a potential biomass source for biofuel purposes. With regard to bioethanol production, microalgae seem to overcome traditional substrate drawbacks. Enzymatic activities are responsible for carbon allocation and hence for carbohydrate profiles. Enzyme activities may be mani...

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Bibliographic Details
Published in:Biotechnology advances 2012-11, Vol.30 (6), p.1655-1661
Main Authors: González-Fernández, Cristina, Ballesteros, Mercedes
Format: Article
Language:English
Subjects:
Allocations
Bioethanol
biofuels
Biological and medical sciences
Biomass
Biotechnology
Carbohydrate Metabolism
Carbohydrates
Carbon
Cell Culture Techniques - methods
Culture
Culture conditions
Cyanobacteria
Cyanobacteria - cytology
Cyanobacteria - enzymology
Cyanobacteria - metabolism
environmental factors
enzyme activity
Enzymes
Enzymes - metabolism
ethanol production
Fundamental and applied biological sciences. Psychology
light intensity
metabolic engineering
Metabolic Networks and Pathways
Microalgae
Microalgae - cytology
Microalgae - enzymology
Microalgae - metabolism
Strategy
temperature
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Summary:Microalgae are regarded as a potential biomass source for biofuel purposes. With regard to bioethanol production, microalgae seem to overcome traditional substrate drawbacks. Enzymatic activities are responsible for carbon allocation and hence for carbohydrate profiles. Enzyme activities may be manipulated by metabolic engineering; however, this goal may also be achieved by controlling environmental conditions of the culture system. We outline the key-enzymes as well as the main operational conditions applied to microalgae growth (inorganic nutrient supplementation, irradiance and temperature) that affect carbohydrate synthesis on microalgae and cyanobacteria. Normally, harsh conditions are needed for such a goal and thus, arrested microalgae growth may occur. Potential strategies to avoid arrested growth, while enhancing carbohydrate accumulation, were also pointed out in this review.
ISSN:0734-9750
1873-1899
DOI:10.1016/j.biotechadv.2012.07.003