Cyanobacterial factories for the production of green energy and value-added products: An integrated approach for economic viability

Rajneesh, -; Singh, Shailendra P.; Pathak, Jainendra; Sinha, Rajeshwer P.

doi:10.1016/j.rser.2016.11.110

Cited by 87 publications

(39 citation statements)

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“…The algae of median tidal area are more efficient in producing UV-B screening compounds to cope up with its deleterious effect (Van De Poll et al, 2003). Algal extracts are valuable source of bioactive compounds such as antioxidants (polyphenols), tocopherols (vitamin E), ascorbate (vitamin C), glutathione (GSH), MAAs, pigments (carotenoids, chlorophylls, phycobilins, scytonemin), carbohydrates, proteins, lipids, minerals, and natural plant growth compounds (auxins, gibberellins, cytokinins) which possess antibacterial, antiviral, antifungal, antioxidative, anti-inflammatory, and antitumor properties and various potential of industrial applications (Rastogi and Sinha, 2009;Rajneesh et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Mycosporine-Like Amino Acids (MAAs) Profile of Two Marine Red Macroalgae, Gelidium sp. and Ceramium sp.

Pandey

Rajneesh

et al. 2017

Int J Appl Sci Biotechnol

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Macroalgae have evolved different strategies to mitigate the damaging effects of solar ultraviolet radiation (UVR), including accumulation of photoprotective compounds such as mycosporine-like amino acids (MAAs). MAAs are secondary metabolites, synthesized by a large variety of organisms including macroalgae, phytoplanktons, cyanobacteria, lichen, fungi and some marine animals. MAAs act as photoprotectants and antioxidants. In the present investigation, MAAs profile of methanolic extracts of two marine red algae Gelidium sp. and Ceramium sp., collected from their natural environment, was studied. High-performance liquid chromatography (HPLC) and UV-Vis spectrometry analyses were used to reveal different MAAs profile in the extracts obtained from these two red algae. The MAAs isolated by HPLC were identified as shinorine (λmax= 333.5 nm), porphyra-334 (λmax=332.3 nm) and palythine (λmax=317.9 nm) having retention times (RT) 1.26, 2.12 and 3.64 min, respectively, in the extract obtained from Gelidium sp. Similarly, shinorine (λmax=332.3 nm), porphyra-334 (λmax=333.5 nm) and palythinol (λmax=332.5 nm) with RT 1.27, 2.13 and 4.61 min, respectively, were identified in the extract obtained from Ceramium sp. This study revealed that Gelidium sp. and Ceramium sp. could serve as potential source for economical exploration of MAAs in pharmaceutical sciences.

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Section: Discussionmentioning

confidence: 99%

Mycosporine-Like Amino Acids (MAAs) Profile of Two Marine Red Macroalgae, Gelidium sp. and Ceramium sp.

Pandey

Rajneesh

et al. 2017

Int J Appl Sci Biotechnol

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“…Por otra parte, los géneros Nostoc y Tolypothrix, entre otros, se consideran recursos potenciales para la producción de biodiesel como combustible alternativo (Singh et al, 2017). Esto se debe a su capacidad productora de lípidos y a la rápida producción de biomasa, ya que en comparación con otras materias primas consideradas para producción de biodiesel como: aceites vegetales, grasa animal y desechos de aceite de cocina, estas presentan un suministro limitado, lo que impide la expansión de la producción del biocombustible (Prabakaran & Ravindran, 2011).…”

Section: Discussionunclassified

“…Identificación y caracterización molecular de cianobacterias tropicales de los géneros Nostoc, Calothrix, Tolypothrix y Scytonema (Nostocales: Nostocaceae), con posible potencial biotecnológico Las cianobacterias, anteriormente conocidas como algas verde azuladas, son un grupo heterogéneo de procariotas fotoautótrofos, las cuales realizan fotosíntesis oxigénica similar a las algas eucariotas y plantas (Singh, Pathak & Sinha, 2017). Estas ocupan hábitats diversos, como terrestres, aguas dulces y marinos, incluyendo medios extremófilos (Prasanna, Sood, Ratha, & Singh, 2014).…”

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“…En la actualidad, se han desarrollado avances biotecnológicos que han demostrado el potencial que poseen las cianobacterias en diversas áreas, convirtiéndose así en un grupo de alto valor económico (Singh et al, 2017). Entre estas aplicaciones se encuentra la capacidad de fijación de nitrógeno; este proceso se puede llevar a cabo en células especializadas y diferenciadas morfológicamente llamadas heterocistos (Flores, López-Lozano & Herrero, 2015).…”

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Identificación y caracterización molecular de cianobacterias tropicales de los géneros Nostoc, Calothrix, Tolypothrix y Scytonema (Nostocales: Nostocaceae), con posible potencial biotecnológico

Morales¹,

Villalobos²,

Rodríguez³

et al. 2017

URJ

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Identification and molecular characterization of tropical cyanobacteria of the genus Nostoc, Calothrix, Tolypothrix and Scytonema (Nostocales: Nostocaceae), with possible biotechnological potential. Cyanobacteria or "Blue-Green" algae comprise a diverse cluster of prokaryotic photoautotrophs that share a high morphological and molecular abundance. Biotechnological advances on nitrogen fixation, bioremediation, pharmaceutical and nutritional value have been developed. Traditional identification based on morphology has been the most common applied technique, but it may be inaccurate because of the phenotypic plasticity that those organisms present. For this reason, molecular techniques had become robust tools for taxonomic positioning of tropical cyanobacterial isolates, associated with morphology identification. This study focuses on the morphological identification and molecular characterization of cyanobacteria isolated in different tropical environments of Costa Rica, for biotechnological prospects. Strains were grown in BG 0 -11 media, photographed under light microscope and classified at genera level. Molecular identification was carried by PCR and sequencing using DNA-dependent RNA polymerase (rpoC1) and small-subunit ribosomal RNA (16S rRNA) gen primers. Subsequently, a phylogenetic positioning analysis was performed by MAFFTv.7 alignment and maximum likelihood by raxMLGUI. Based on phenotypic characteristics, four genera of Nostocales were identified: Calothrix sp., Tolypothrix sp., Scytonema sp. and Nostoc sp. Molecular analysis shows a taxonomic grouping that is consistent with the observed morphology, with the 16S rDNA gene yielding robust and stable results. The identified genera are known for their nitrogen fixation capability: Nostoc and Calothrix have been used in maintaining fertility and soil recovering studies. Nostoc is known for its nutritional properties and biofuel production; a characteristic shared by Tolypothrix as well. The last genera; Scytonema, it is known for its pharmacological properties. With the successful identification of cyanobacteria strains isolated from tropical environments, it is possible to continue the study of genes responsible for properties of biotechnological interest and to evaluate their potential, with future perspectives of application and biodiversity conservation.Key words: Cyanobacteria, 16S rRNA, rpoC1, characterization molecular, morphological identification, biotechnological potential. RESUMEN:Las cianobacterias son procariotas fotoautótrofos, morfoló-gica y molecularmente diversas, en las cuales se han reportado avances biotecnológicos sobre fijación de nitrógeno, biorremediación y valor nutricional-farmacéutico. La identificación tradicional de cianobacterias basada en morfología puede ser imprecisa, por lo que las técnicas moleculares son una herramienta robusta para el posicionamiento taxonómico de estas cepas tropicales. Este estudio se enfoca en la identificación morfológica y caracterización molecular de cianobacterias de ambientes tropica...

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“…Therefore, generation of microbiological energy through massive solar energy transformation permits harvesting various forms of eco-friendly energy reserves (Hall et al, 1995;Paumann et al, 2005). The aforementioned characteristics make cyanobacteria potential microorganisms for their application as feedstocks for sustainable production of food and non-food commodities, including valuable chemicals and bioenergy (Wase and Wright, 2008;Sarsekeyeva et al, 2015;Rajneesh et al, 2017). Cyanobacteria produce a number of valuable compounds such as ethanol, butanol, fatty acids, and other organic acids, and therefore, are promising candidates for fulfilling our energy demands in a sustainable manner .…”

Section: Introductionmentioning

confidence: 99%

Cyanobacterial Farming for Environment Friendly Sustainable Agriculture Practices: Innovations and Perspectives

Pathak

Rajneesh

Maurya

et al. 2018

Front. Environ. Sci.

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148

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Sustainable supply of food and energy without posing any threat to environment is the current demand of our society in view of continuous increase in global human population and depletion of natural resources of energy. Cyanobacteria have recently emerged as potential candidates who can fulfill abovementioned needs due to their ability to efficiently harvest solar energy and convert it into biomass by simple utilization of CO 2 , water and nutrients. During conversion of radiant energy into chemical energy, these biological systems produce oxygen as a by-product. Cyanobacterial biomass can be used for the production of food, energy, biofertilizers, secondary metabolites of nutritional, cosmetics, and medicinal importance. Therefore, cyanobacterial farming is proposed as environment friendly sustainable agricultural practice which can produce biomass of very high value. Additionally, cyanobacterial farming helps in decreasing the level of greenhouse gas, i.e., CO 2 , and it can be also used for removing various contaminants from wastewater and soil. However, utilization of cyanobacteria for resolving the abovementioned problems is subjected to economic viability. In this review, we provide details on different aspects of cyanobacterial system that can help in developing sustainable agricultural practices. We also describe different large-scale cultivation systems for cyanobacterial farming and discuss their merits and demerits in terms of economic profitability.

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Cyanobacterial factories for the production of green energy and value-added products: An integrated approach for economic viability

Cited by 87 publications

References 223 publications

Mycosporine-Like Amino Acids (MAAs) Profile of Two Marine Red Macroalgae, Gelidium sp. and Ceramium sp.

Mycosporine-Like Amino Acids (MAAs) Profile of Two Marine Red Macroalgae, Gelidium sp. and Ceramium sp.

Identificación y caracterización molecular de cianobacterias tropicales de los géneros Nostoc, Calothrix, Tolypothrix y Scytonema (Nostocales: Nostocaceae), con posible potencial biotecnológico

Cyanobacterial Farming for Environment Friendly Sustainable Agriculture Practices: Innovations and Perspectives

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