Optimal Laboratory Cultivation Conditions of ILimnospira maxima/I for Large-Scale Production

Limnospira maxima, a photosynthetic bacterium with valuable proteins and pigments, faces cultivation challenges due to a lack of management knowledge and expensive nitrogen sources. This study aimed to find an efficient method for large-scale cultivation through testing different light colors and ni...

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Published in:Biology (Basel, Switzerland) Switzerland), 2023-11, Vol.12 (12)
Main Authors: Pineda-Rodríguez, Yirlis Yadeth, Herazo-Cárdenas, Diana Sofia, Vallejo-Isaza, Adriana, Pompelli, Marcelo F, Jarma-Orozco, Alfredo, Jaraba-Navas, Juan de Dios, Cordero-Ocampo, Jhony David, González-Berrio, Marianella, Arrieta, Daniela Vegliante, Pico-González, Ana, Ariza-González, Anthony, Aviña-Padilla, Katia, Rodríguez-Páez, Luis Alfonso
Format: Article
Language:English
Subjects:
Food supply
Measurement
Photosynthesis
Proteins
Radiation
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Summary:Limnospira maxima, a photosynthetic bacterium with valuable proteins and pigments, faces cultivation challenges due to a lack of management knowledge and expensive nitrogen sources. This study aimed to find an efficient method for large-scale cultivation through testing different light colors and nitrogen sources. The study’s results showed that using white lights and potassium nitrate was the most effective approach, promoting growth and increasing the production of phycocyanin, a valuable blue pigment with applications in food, health, and the dye and pigment industry. In summary, this research offers a cost-effective and efficient solution for cultivating Limnospira maxima on a larger scale. This has the potential to positively impact food production and various industrial goods, providing a more sustainable and accessible source of phycocyanin and other valuable components. Cultivating Limnospira maxima, renowned for its abundant proteins and valuable pigments, faces substantial challenges rooted in the limited understanding of its optimal growth parameters, associated high costs, and constraints in the procurement of traditional nitrogen sources, particularly NaNO[sub.3]. To overcome these challenges, we conducted a comprehensive 4 × 3 factorial design study. Factors considered included white, red, blue, and yellow light spectra, along with nitrogen sources NaNO[sub.3] and KNO[sub.3], as well as a nitrogen-free control, for large-scale implementation. Optimal growth, measured by Optical Density, occurred with white and yellow light combined with KNO[sub.3] as the nitrogen source. These conditions also increased dry weight and Chl-a content. Cultures with nitrogen deprivation exhibited high values for these variables, attributed to carbon accumulation in response to nitrogen scarcity. Phycocyanin, a crucial pigment for nutrition and industry, reached its highest levels in cultures exposed to white light and supplemented with KNO[sub.3], with an impressive content of 384.11 g kg[sup.−1] of dry weight. These results highlight the efficacy and cost-efficiency of using a combination of white light and KNO[sub.3] for large-scale L. maxima cultivation. This strategy offers promising opportunities to address global food security challenges and enhance the production of industrially relevant pigments.
ISSN:2079-7737
2079-7737
DOI:10.3390/biology12121462