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Evaluating the “Darkness” of Melanin Materials.

preprint
submitted on 04.08.2020 and posted on 07.08.2020 by Koen Vercruysse

We developed a mathematical process to quantify the apparent darkness of solutions containing melanin-like materials. The visible portion of their UV-Vis spectra is model using an exponential equation. Linear regression analysis provides the constants that define this exponential equation. Using these constants, the exponential equation is integrated between 400nm to 900nm to obtain the area-under-the-curve (AUC) of the visible portion of the UV-Vis spectra. This process was applied to data collected from various melanin-like materials discussed in earlier reports. By comparing the AUC values of different samples one can readily compare the “darkness” of melanins and evaluate the impact varying reaction conditions may have on this physical property. We revisited the results of earlier reports and discuss additional points related to the UV-protective properties attributed to melanins.

History

Email Address of Submitting Author

kvercruysse@tnstate.edu

Institution

Tennessee State University

Country

United States

ORCID For Submitting Author

0000-0003-2420-1985

Declaration of Conflict of Interest

No conflicts of interest

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