“…For the visible part of the spectra the absorbance is lower. This behavior can be in agreement with the photoprotection function attributed to melanin and is potentially useful for solar photon capture in photovoltaic applications [30].…”
Section: Resultssupporting
confidence: 83%
“…6B. Both spectra present a broad diffraction peak (2θ=10-30º), which can typically be attributed to amorphous and disordered materials [29,30].…”
“…For the visible part of the spectra the absorbance is lower. This behavior can be in agreement with the photoprotection function attributed to melanin and is potentially useful for solar photon capture in photovoltaic applications [30].…”
Section: Resultssupporting
confidence: 83%
“…6B. Both spectra present a broad diffraction peak (2θ=10-30º), which can typically be attributed to amorphous and disordered materials [29,30].…”
“…In fact, they might correspond to the lateral or height extension of the melanin stacked sheets protomolecules. In particular, the value D ¼ 18.1 Å obtained for melanin from C. molossus L. corresponded to about five stacked sheets of planar structures, which was inconsistent with the conclusion reported in the literature that the average dimension of the natural melanin protomolecules was lower than synthetic melanin (4 sheets) (29). This might be because the non-covalent bonds between the layers in the the structural units of melanin from C. molossus L. were greater, leading to the greater layer bulk density.…”
“…The UV–visible wavelength scan showed that absorption was highest in the UV region (200–300 nm), but diminished towards the visible region. This phenomenon is characteristic to melanin and was due to the actual complex structure of melanin [1], [13].Fig. 4(a) UV–visible spectrum of melanin pigment obtained from FWE.…”
Section: Spectroscopy Ir and Xrd Analysis Of Melaninmentioning
In this study, optimization of production parameters influencing melanin production in an economical fruit waste extract was attempted using a garden soil isolate (Bacillus safensis). Taguchi approach was adopted for screening of critical parameters and further optimization was done using a central composite design of response surface methodology (RSM). At optimum conditions (pH 6.84 and Temp 30.7 °C), a significant yield of ∼6.96 mg/mL was observed. Statistical analysis revealed that the experimental results fitted well to the statistical model with model R2 value 0.982. The optimization of process parameters using RSM reported a 15% increase in the pigment yield than average yield obtained from the studied model. The melanin produced was confirmed by UV–visible spectroscopy, FTIR and XRD analysis. Moreover melanin obtained has significant photoprotective, radical scavenging and metal chelating activity. Thus, B. safensis has the potential to be a new source for the production of melanin, which is of industrial interest.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
