Potential of cyanobacteria in the conversion of wastewater to biofuels

Sadvakasova, A. K.; Kossalbayev, Bekzhan D.; Zayadan, B. K.; Kirbayeva, Dariga K; Alwasel, Saleh; Allakhverdiev, Suleyman I.

doi:10.1007/s11274-021-03107-1

Cited by 28 publications

(5 citation statements)

References 106 publications

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“…At the same time, it is known that the increase in crop yields largely depends on access to mineral nutrients, especially nitrogen. The natural sources of nitrogen in the soil are microorganisms, which can fix molecular nitrogen from the atmosphere [ 1 , 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Mo and Fe on Photosynthetic and Nitrogenase Activities of Nitrogen-Fixing Cyanobacteria under Nitrogen Starvation

Sadvakasova

Kossalbayev

Token

et al. 2022

Cells

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The potential of cyanobacteria to perform a variety of distinct roles vital for the biosphere, including nutrient cycling and environmental detoxification, drives interest in studying their biodiversity. Increasing soil erosion and the overuse of chemical fertilizers are global problems in developed countries. The option might be to switch to organic farming, which entails largely the use of biofertilisers. Cyanobacteria are prokaryotic, photosynthetic organisms with considerable potential, within agrobiotechnology, to produce biofertilisers. They contribute significantly to plant drought resistance and nitrogen enrichment in the soil. This study sought, isolated, and investigated nitrogen-fixing cyanobacterial strains in rice fields, and evaluated the effect of Mo and Fe on photosynthetic and nitrogenase activities under nitrogen starvation. Cyanobacterial isolates, isolated from rice paddies in Kazakhstan, were identified as Trichormus variabilis K-31 (MZ079356), Cylindrospermum badium J-8 (MZ079357), Nostoc sp. J-14 (MZ079360), Oscillatoria brevis SH-12 (MZ090011), and Tolypothrix tenuis J-1 (MZ079361). The study of the influence of various concentrations of Mo and Fe on photosynthetic and nitrogenase activities under conditions of nitrogen starvation revealed the optimal concentrations of metals that have a stimulating effect on the studied parameters.

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Section: Introductionmentioning

confidence: 99%

Influence of Mo and Fe on Photosynthetic and Nitrogenase Activities of Nitrogen-Fixing Cyanobacteria under Nitrogen Starvation

Sadvakasova

Kossalbayev

Token

et al. 2022

Cells

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“…In algal research, RS has been used to analyse pigments, proteins, carbohydrates, and lipids [98][99][100][101][102] (Figure 5). Huang et al [14] investigated the composition of microalgae to analyse them using confocal Raman microscopy.…”

Section: Application Of Raman Spectroscopy In Algae Studiesmentioning

confidence: 99%

Raman Spectroscopy and Its Modifications Applied to Biological and Medical Research

Allakhverdiev

Khabatova

Kossalbayev

et al. 2022

Cells

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Nowadays, there is an interest in biomedical and nanobiotechnological studies, such as studies on carotenoids as antioxidants and studies on molecular markers for cardiovascular, endocrine, and oncological diseases. Moreover, interest in industrial production of microalgal biomass for biofuels and bioproducts has stimulated studies on microalgal physiology and mechanisms of synthesis and accumulation of valuable biomolecules in algal cells. Biomolecules such as neutral lipids and carotenoids are being actively explored by the biotechnology community. Raman spectroscopy (RS) has become an important tool for researchers to understand biological processes at the cellular level in medicine and biotechnology. This review provides a brief analysis of existing studies on the application of RS for investigation of biological, medical, analytical, photosynthetic, and algal research, particularly to understand how the technique can be used for lipids, carotenoids, and cellular research. First, the review article shows the main applications of the modified Raman spectroscopy in medicine and biotechnology. Research works in the field of medicine and biotechnology are analysed in terms of showing the common connections of some studies as caretenoids and lipids. Second, this article summarises some of the recent advances in Raman microspectroscopy applications in areas related to microalgal detection. Strategies based on Raman spectroscopy provide potential for biochemical-composition analysis and imaging of living microalgal cells, in situ and in vivo. Finally, current approaches used in the papers presented show the advantages, perspectives, and other essential specifics of the method applied to plants and other species/objects.

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“…For these reasons, efforts have been made to utilize biodiesel derived from cyanobacteria which require lower nutritional inputs (Bolatkhan et al 2020) and occupy a smaller land area. Additionally, their high photosynthetic activity results in rapid biomass and lipid accumulation, alleviating the impact of CO 2 emission on global warming (Sadvakasova et al 2021). However, lipid content varies among different cyanobacterial species (Yadav et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Modified Natural Seawater as Growth Medium for Halotolerant Cyanobacterium Aphanothece halophytica to Increase Lipid Content for Biodiesel Production

Thongtha,

Aryusuk,

Kittiwongwattana

et al. 2024

Preprint

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Biodiesel derived from cyanobacterial oils becomes attractive as an efficient renewable energy. The present study aims to optimize growth and lipid production of halotolerant unicellular cyanobacterium Aphanothece halophytica cultivated in natural seawater. In this study, A. halophytica was able to grow in natural seawater when supplemented with low concentration of NaNO3, whereas no growth occurred without supplementation. The specific growth rate of 0.230 day− 1 and cell concentration of 25.17 x 106 cells mL− 1 were achieved in A. halophytica cultivated in natural seawater supplemented with 17.6 mM NaNO3 and Turk Island salt solution (suitable natural seawater; SNSW) for 14 days. This growth rate was comparable to that of cells grown in normal BG11 plus Turk Island salt solution. The lipid content and fatty acid profiles of A. halophytica varied with changes in NaCl concentrations. The highest lipid content of 50.47% and lipid productivity of 48.33 mg L− 1 day− 1 were obtained in cultures supplemented with 1.89 mmol C-atom L− 1 glucose and 0.75 M NaCl. The optimal medium pH and cultivation temperature for lipid production was 7.5 and 25–35°C, respectively. When cultivating A. halophytica in optimized SNSW with various NaCl concentrations, the highest contents of linoleic and linolenic acids, and the lowest contents of palmitic, stearic, and oleic acids were observed with 0.75 M NaCl. In contrast, cultures grown in optimized SNSW with 0.5 M NaCl showed fatty acid methyl ester profiles rich in monounsaturated fatty acids, which are favorable for high-quality biodiesel production.

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Potential of cyanobacteria in the conversion of wastewater to biofuels

Cited by 28 publications

References 106 publications

Influence of Mo and Fe on Photosynthetic and Nitrogenase Activities of Nitrogen-Fixing Cyanobacteria under Nitrogen Starvation

Influence of Mo and Fe on Photosynthetic and Nitrogenase Activities of Nitrogen-Fixing Cyanobacteria under Nitrogen Starvation

Raman Spectroscopy and Its Modifications Applied to Biological and Medical Research

Modified Natural Seawater as Growth Medium for Halotolerant Cyanobacterium Aphanothece halophytica to Increase Lipid Content for Biodiesel Production

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