Sohani E, Pajoum Shariati F, Pajoum Shariati SR. Assessment of various colored lights on the growth pattern and secondary metabolites synthesis in
Spirulina platensis.
Prep Biochem Biotechnol 2022;
53:412-423. [PMID:
35895500 DOI:
10.1080/10826068.2022.2098320]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Cyanobacteria are photosynthetic aquatic microorganisms with light and dark photosynthesis reactions. In the present study, the effect of various light spectrums on light and dark reactions in Spirulina platensis was investigated. Chlorophyll a and phycocyanin as light reaction pigments and vitamin B12 as a product of dark reaction were examined. S. platensis was exposed to four different color LEDs (white, red, blue, and yellow) at a fixed intensity. In light reaction, chlorophyll-a has the highest amount in blue, red, white, and yellow by 61.23, 45.46, 34.85, and 22.55 mg·g-1, respectively. Those microalgae cultured in the blue color produced the highest amount of Chlorophyll a and c-phycocyanin. For C-phycocyanin, the highest to the lowest amount belong to blue, red, yellow, and white light by 168.6, 102.4, 85.77, and 53.81 mg·g-1. The amount of vitamin B12, from high to low is related to blue, red, white, and yellow light by 68.91, 59.73, 52.56, and 10.2 µg·g-1. The trend of vitamin B12's production was similar to the chlorophyll a. In conclusion, blue color can increase the production of vitamin B12 while keeping light reaction products at their highest level.
Collapse