Evaluation of dye sensitized solar cells based on a pigment obtained from Antarctic Streptomyces fildesensis

Silva, Camila; Santos, Andrés; Salazar, Rodrigo; Lamilla, Claudio; Pavez, Boris; Meza, Pablo; Hunter, R.; Barrientos, Leticia

doi:10.1016/j.solener.2019.01.035

Cited by 45 publications

(12 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some recent studies reveal the potential of melanins in innovative nanotechnology applications: the synthesis of crystalline, flexible, and thermostable nanomelaninpolyhydroxybutyrate nanocomposite films for use in biomedicine or as packaging material (Kiran et al 2017); the environmentally gentle synthesis and/or stabilization of Ag, Au, Pt, Cu, Mn, and Ni nanoparticles mediated by melanins from Nocardiopsis alba or recombinant E. coli (Kiran et al 2014; Another recent study proposed the use of melanin from the Antarctic Streptomyces fildesensi as an environmentally friendly sensitizer pigment in dye sensitized solar cells (Silva et al 2019).…”

Section: Biotechnological Applicationsmentioning

confidence: 99%

Melanin biosynthesis in bacteria, regulation and production perspectives

Paván

López

Pettinari

2019

Appl Microbiol Biotechnol

102

View full text Add to dashboard Cite

The production of black pigments in bacteria was discovered more than a century ago and related to tyrosine metabolism. However, their diverse biological roles and the control of melanin synthesis in different bacteria have only recently been investigated. The broad distribution of these pigments suggests that they have an important role in a variety of organisms. Melanins protect microorganisms from many environmental stress conditions, ranging from ultraviolet radiation and toxic heavy metals to oxidative stress. Melanins can also affect bacterial interactions with other organisms and are important in pathogenesis and survival in many environments. Bacteria produce several types of melanin through dedicated pathways or as a result of enzymatic imbalances in altered metabolic routes. The control of the melanin synthesis in bacteria involves metabolic and transcriptional regulation, but many aspects remain still largely unknown. The diverse properties of melanins have spurred a large number of applications, and recent efforts have been done to produce the pigment at biotechnologically relevant scales.

show abstract

Section: Biotechnological Applicationsmentioning

confidence: 99%

Melanin biosynthesis in bacteria, regulation and production perspectives

Paván

López

Pettinari

2019

Appl Microbiol Biotechnol

102

View full text Add to dashboard Cite

show abstract

“…that showed a direct application as an antimicrobial agent [26]. Also, Silva and coworkers (2019) identified WSM from the Antarctic strain Streptomyces fildesensis that revealed great potential in solar-cell research [27].…”

Section: Characterisation Andmentioning

confidence: 99%

Characterization of an Insoluble and Soluble Form of Melanin Produced by Streptomyces cavourensis SV 21, a Sea Cucumber Associated Bacterium

et al. 2022

View full text Add to dashboard Cite

Melanin is a widely distributed and striking dark-colored pigment produced by countless living organisms. Although a wide range of bioactivities have been recognized, there are still major constraints in using melanin for biotechnological applications such as its fragmentary known chemical structure and its insolubility in inorganic and organic solvents. In this study, a bacterial culture of Streptomyces cavourensis SV 21 produced two distinct forms of melanin: (1) a particulate, insoluble form as well as (2) a rarely observed water-soluble form. The here presented novel, acid-free purification protocol of purified particulate melanin (PPM) and purified dissolved melanin (PDM) represents the basis for an in-depth comparison of their physicochemical and biological properties, which were compared to the traditional acid-based precipitation of melanin (AM) and to a synthetic melanin standard (SM). Our data show that the differences in solubility between PDM and PPM in aqueous solutions may be a result of different adjoining cation species, since the soluble PDM polymer is largely composed of Mg2+ ions and the insoluble PPM is dominated by Ca2+ ions. Furthermore, AM shared most properties with SM, which is likely attributed to a similar, acid-based production protocol. The here presented gentler approach of purifying melanin facilitates a new perspective of an intact form of soluble and insoluble melanin that is less chemical altered and thus closer to its original biological form.

show abstract

“…Melanin has gained increased attention in recent years due to its many applications in dermocosmetics [ 5 , 6 , 7 , 8 ], dyeing [ 2 , 5 , 9 , 10 , 11 ], environmental remediation [ 5 , 12 , 13 ], materials science [ 6 , 14 , 15 , 16 , 17 ], nanotechnology [ 6 ], and biomedicine [ 5 , 18 , 19 , 20 , 21 , 22 , 23 ]. Significantly, there is increased interest in using melanin in cancer therapy, in which it can function in multiple roles [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Raman Characterization of Fungal DHN and DOPA Melanin Biosynthesis Pathways

Strycker

Han

Bahari

et al. 2021

JoF

View full text Add to dashboard Cite

Fungal melanins represent a resource for important breakthroughs in industry and medicine, but the characterization of their composition, synthesis, and structure is not well understood. Raman spectroscopy is a powerful tool for the elucidation of molecular composition and structure. In this work, we characterize the Raman spectra of wild-type Aspergillus fumigatus and Cryptococcus neoformans and their melanin biosynthetic mutants and provide a rough “map” of the DHN (A. fumigatus) and DOPA (C. neoformans) melanin biosynthetic pathways. We compare this map to the Raman spectral data of Aspergillus nidulans wild-type and melanin biosynthetic mutants obtained from a previous study. We find that the fully polymerized A. nidulans melanin cannot be classified according to the DOPA pathway; nor can it be solely classified according to the DHN pathway, consistent with mutational analysis and chemical inhibition studies. Our approach points the way forward for an increased understanding of, and methodology for, investigating fungal melanins.

show abstract

Evaluation of dye sensitized solar cells based on a pigment obtained from Antarctic Streptomyces fildesensis

Cited by 45 publications

References 50 publications

Melanin biosynthesis in bacteria, regulation and production perspectives

Melanin biosynthesis in bacteria, regulation and production perspectives

Characterization of an Insoluble and Soluble Form of Melanin Produced by Streptomyces cavourensis SV 21, a Sea Cucumber Associated Bacterium

Raman Characterization of Fungal DHN and DOPA Melanin Biosynthesis Pathways

Contact Info

Product

Resources

About