Effects of light quality and intensity on phycobiliprotein productivity in two Leptolyngbya strains isolated from southern Bahia's Atlantic Forest.

IF 1.1 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES Anais da Academia Brasileira de Ciencias Pub Date : 2024-08-16 eCollection Date: 2024-01-01 DOI:10.1590/0001-3765202420230348

Elias S Gallina, Taiara A Caires, Orlando Ernesto J Cortés

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Abstract

Cyanobacterial phycocyanin and phycoerythrin are gaining commercial interest due to their nutrition and healthcare values. This research analyzed the biomass accumulation and pigment production of two strains of Leptolyngbya under different combinations of light colors and intensities. The results showed that while Leptolyngbya sp.4 B1 (B1) produced all phycobiliproteins, Leptolyngbya sp.5 F2 (F2) only had phycocyanin and allophycocyanin. Both the color of the light and its light intensity affect the biomass accumulation and phycoerythrin concentration in strain B1. Although white light at medium intensity (50 μmol m-2 s-1) causes greater biomass accumulation (1.66 ± 0.13 gDW L-1), low-intensity (25 μmol m-2 s-1) green light induces lower biomass accumulation with twice the pigment content (87.70 ± 2.46 mg gDW -1), culminating in 71% greater productivity. In contrast, for the F2 strain, light intensity positively influenced biomass and pigment accumulation, being observed 2.25 ± 0.10 gDW L-1 under white light at 100 μmol m-2 s-1 and higher phycocyanin concentration (138.38 ± 3.46 mg gDW -1) under red light at 100 μmol m-2 s-1. These findings provide insights into optimizing the growth conditions by altering the intensity and wavelength of light for future production of phycocyanin and phycoerythrin from local cyanobacteria.

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光质和光强对分离自巴伊亚州南部大西洋森林的两株 Leptolyngbya 藻类的藻脂蛋白产量的影响。

蓝藻的藻蓝蛋白和藻红蛋白因其营养和保健价值而受到越来越多的商业关注。本研究分析了两种蓝藻菌株在不同光色和光强组合下的生物量积累和色素产生情况。结果表明，Leptolyngbya sp.4 B1（B1）产生所有的藻蓝蛋白，而 Leptolyngbya sp.5 F2（F2）只有藻蓝蛋白和异藻蓝蛋白。光的颜色和光照强度都会影响菌株 B1 的生物量积累和藻红蛋白浓度。虽然中等强度（50 μmol m-2 s-1）的白光会导致更高的生物量积累（1.66 ± 0.13 gDW L-1），但低强度（25 μmol m-2 s-1）的绿光会导致较低的生物量积累，而色素含量却是白光的两倍（87.70 ± 2.46 mg gDW-1），从而使生产率提高了 71%。相反，对于 F2 菌株，光照强度对生物量和色素积累有积极影响，在 100 μmol m-2 s-1 的白光下观察到 2.25 ± 0.10 gDW L-1，在 100 μmol m-2 s-1 的红光下观察到更高的藻蓝蛋白浓度（138.38 ± 3.46 mg gDW-1）。这些发现为今后从本地蓝藻中生产藻蓝蛋白和藻红蛋白提供了通过改变光的强度和波长来优化生长条件的启示。

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来源期刊

Anais da Academia Brasileira de Ciencias 综合性期刊-综合性期刊

CiteScore

2.20

自引率

0.00%

发文量

347

审稿时长

1 months

期刊介绍： The Brazilian Academy of Sciences (BAS) publishes its journal, Annals of the Brazilian Academy of Sciences (AABC, in its Brazilianportuguese acronym ), every 3 months, being the oldest journal in Brazil with conkinuous distribukion, daking back to 1929. This scienkihic journal aims to publish the advances in scienkihic research from both Brazilian and foreigner scienkists, who work in the main research centers in the whole world, always looking for excellence. Essenkially a mulkidisciplinary journal, the AABC cover, with both reviews and original researches, the diverse areas represented in the Academy, such as Biology, Physics, Biomedical Sciences, Chemistry, Agrarian Sciences, Engineering, Mathemakics, Social, Health and Earth Sciences.