Bhat Obaid, Unpaprom Yuwalee, Ramaraj Rameshprabu
School of Renewable Energy, Maejo University, Chiang Mai, 50290, Thailand.
Sustainable Resources and Sustainable Engineering Research Lab, Maejo University, Chiang Mai, 50290, Thailand.
Mol Biotechnol. 2023 Aug 3. doi: 10.1007/s12033-023-00842-8.
Microalgae biomass and pigments have a high economic value due to their many biological and commercial applications. In this sense, Spirulina platensis was grown under different (LEDs) light-emitting diodes. The current examination aims to increase the biomass production of S. platensis by formulating an optimal growth condition under different LED lights. Light-emitting diodes have a precise wavelength that has an encouraging effect on microalgae biomass production. For this purpose, the light intensity of 3000 lx was used to illuminate the culture medium, resulting in enhanced S. platensis biomass production. The highest optical density of 0.576 and dry cell weight of 0.343 g/L was recorded for the white light-emitting diode, and the red light-emitting diode, the optical density of 0.479 and dry cell weight of 0.321 g/L was recorded. The highest protein content of 66.10 ± 0.44% was registered with a blue light-emitting diode, followed by a white light-emitting diode with a protein content of 60.86 ± 0.39%. This research is an essential step in defining the light condition that might be useful to increase the biomass production of S. platensis. The study's findings demonstrated that exposure to various light-emitting diode colors could enhance both the quality and quantity of biomass produced in S. platensis cultures and encourage the use of light-emitting diodes as a light source for S. platensis farming without any undesirable effects on growth.
微藻生物质和色素因其众多生物学和商业应用而具有很高的经济价值。从这个意义上讲，钝顶螺旋藻是在不同的发光二极管（LED）下培养的。当前的研究旨在通过在不同LED光照下制定最佳生长条件来提高钝顶螺旋藻的生物质产量。发光二极管具有精确的波长，对微藻生物质产量有促进作用。为此，使用3000勒克斯的光强照射培养基，从而提高了钝顶螺旋藻的生物质产量。白色发光二极管的最高光密度为0.576，干细胞重量为0.343克/升；红色发光二极管的光密度为0.479，干细胞重量为0.321克/升。蓝色发光二极管的蛋白质含量最高，为66.10±0.44%，其次是白色发光二极管，蛋白质含量为60.86±0.39%。这项研究是确定可能有助于提高钝顶螺旋藻生物质产量的光照条件的重要一步。该研究结果表明，暴露于不同颜色的发光二极管下可以提高钝顶螺旋藻培养物中产生的生物质的质量和数量，并鼓励将发光二极管用作钝顶螺旋藻养殖的光源，而对生长没有任何不良影响。
