Volume 15, Issue 74 (vol. 15, no. 74 2026)
jispp 2026, 15(74): 187-200 |
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Maleki M S, Bahreininejad B. Investigating the different light wavelengths effects on growth parameters and metabolites of the Haematococcus pluvialis microalgae using LED lamps. jispp 2026; 15 (74) : 9
URL: http://jispp.iut.ac.ir/article-1-2301-en.html
URL: http://jispp.iut.ac.ir/article-1-2301-en.html
1- Department of Biology, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran
2- Research Division of Natural Resources, Isfahan Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran ,b.bahreininejad@areeo.ac.ir
2- Research Division of Natural Resources, Isfahan Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran ,
Abstract: (63 Views)
Light wavelength, as the light characteristics, can directly improve the growth and accumulation of primary and secondary metabolites in microalgae. In this study, the different light wavelengths effects on the growth and biochemical parameters of the microalgae Haematococcus pluvialis were evaluated using LED lamps. For this purpose, Haematococcus pluvialis was exposed to red (630 nm), blue (460 nm), green (520 nm), yellow (590 nm), purple (400 nm), and white wavelengths and harvested after 24 days to measure and evaluate the studied parameters. In this study, the highest microalgae number, biomass productivity, and carbohydrate were observed under red light with 52.63, 93.75, and 85.25% increases, respectively, compared to white light. Also, the maximum chlorophyll a and chlorophyll b pigment levels, as the dominant pigments of green microalgae, were obtained under red light with an increase of 73.63 and 57.09 percent, respectively, compared to white light. In contrast, the highest carotenoid and lipid content were observed in yellow light with an increase of 82.96 and 118 percent, respectively, and the astaxanthin content in purple light with an increase of 180 percent compared to the control sample. All the studied parameters, except for carotenoid, astaxanthin, and lipid, were observed under red and blue lights, respectively. These results are probably due to the presence of dominant chlorophyll pigments, which show the highest light absorption in red and blue wavelengths. It can be suggested that red and blue lights, as optimal wavelengths, can improve growth indices in the green microalgae Haematococcus pluvialis compared to other lights.
Article number: 9
Type of Study: Research |
Subject:
others
Received: 2026/02/1 | Accepted: 2026/05/20 | Published: 2026/10/31
Received: 2026/02/1 | Accepted: 2026/05/20 | Published: 2026/10/31
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