pigment Archives

A newly developed framework for understanding the photoproperties of both natural organic matter and eumelanin, a natural pigment responsible for dark colors in organisms, may inspire advanced sustainable technologies, scientists say. -- ACS Central Science

Unraveling The Building Blocks Of Earth’s Pigments

by Keith CowingJuly 1, 2026July 1, 2026

[Ohio State] Although they are some of the most widespread substances on Earth, not much is known about eumelanin, or natural organic matter (NOM) — a dark-colored substance formed by […]

Cell-free EDTA-treated EPS pigmented sheath -- Scientific Reports

Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Plant Biology, Status Report

Novel Raman Signature Evidences An Unknown Cyanobacterial Pigment

by Keith CowingMay 17, 2026May 17, 2026

From the first botanical characterization of cyanobacteria about two centuries ago to contemporary studies, only two categories of extracellular UV-screening pigments have been considered: scytonemin which is very well described […]

Normalized bands areas of parietin (FT-IR reflectance) during UV irradiation under N2 flux showed as color gradient, where dark yellow is band's area before irradiation (100 %), orange is 50 % of beginning band's area, red is 0 % of beginning band's area and yellow is 150 % of beginning band's area. Numeric values are referred to Tab. S1. -- Science Direct

Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Habitable Zones, Plant Biology, Radiation, Status Report

UV Photo-degradation of the Secondary Lichen Substance Parietin: A Multi-spectroscopic Analysis in Astrobiology Perspective

by Keith CowingMay 27, 2024May 27, 2024

The cortical anthraquinone yellow-orange pigment parietin is a secondary lichen substance providing UV-shielding properties that is produced by several lichen species. In our work, the secondary metabolite has been extracted […]