期刊
JOURNAL OF APPLIED PHYCOLOGY
卷 32, 期 5, 页码 2851-2861出版社
SPRINGER
DOI: 10.1007/s10811-020-02179-0
关键词
Antioxidant capacity; Carotenoids; Cyanobacteria; Fatty acids; Lipids; Photosynthetic activity; Phycobiliproteins
资金
- COST Action European network for algal bioproducts (EUALGAE) [ES1408]
- FCT - COMPETE 2020 [PTDC/CVT-WEL/5207/2014, POCI-01-0145-FEDER-016797]
- FCT [UIDB/04423/2020, UIDP/04423/2020]
- Atlantic Interreg Project-Enhance MicroAlgae-High added-value industrial opportunities for microalgae in the Atlantic Area [EAPA_338/2016]
- Junta de Andalucia [RNM295]
Cyanobacteria are able to absorb light over a wide spectral range due to the presence of photoreceptors, making it possible to modulate the production of high-value compounds by inducing specific pathways. In order to evaluate the influence of light quality in cyanobacteria metabolism,Cyanobiumsp. was grown in five different light conditions, by using low-pressure sodium vapor lamp (SOX) supplemented with low irradiances of green, red, and blue light and UV radiation compared to a control with only SOX. The effects of light supplementation on biomass productivity, photosynthetic activity, biochemical composition, and total antioxidant capacity were evaluated. No changes in biomass productivity were induced by any light supplements. The supplementation of red light triggered the production of lipids, phycocyanin, carotenoids, and total antioxidant compounds, while supplementation of green light increased the content of carbohydrates and chlorophylla. Thus, supplementation of blue light and UV radiation showed little or no improvements to the culture, whereas under UV radiation the photosynthetic activity was reduced. Overall,Cyanobiumsp. is a promising strain, mainly due to its accessibility to metabolism photoregulation as to produce various bioactive compounds.
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