The genus Actinomyces is generally regarded as lying between the true bacteria and higher fungi, and contains a few parasitic species but many saprophytic forms. The latter occur mostly in the soil and many of them produce striking pigments. It is quite natural that efforts have been made to utilize these pigments in the identification of species; but the present unsatisfactory nature of the cl...

The secretion from the hippopotamus’ skin changes its color from colorless to red, and then brown by polymerization of its pigments. The responsible pigments for the coloring reaction were isolated and denoted as hipposudoric acid (the red pigment) and norhipposudoric acid (the orange pigment). The syntheses of these pigments and the related derivatives were performed, and the latter were of us...

Pigments from microalgae and cyanobacteria have attracted great interest for industrial applications due to their bioactive potential natural product attributes. These pigments are usually sold as extracts, overcome purification costs. The extraction of these compounds is based on cell disruption methodologies chemical solubility compounds. Different been used pigment extraction, such sonicatio...

For a multiproduct microalgal biorefinery, most of the cell components should be extracted and fractionated. This work investigates fractionation lipids from other (pigments, proteins, carbohydrates) using polymers IL solutions in aqueous two-phase systems (ATPS). The poorly migrated to phases ATPS were recovered (97% total fatty acids) third phase (interphase) formed between top bottom phases....

BACKGROUND AND PURPOSE The edible blue pigments produced by gardenia fruits have been used as value-added colorants for foods in East Asia for 20 years. However, the biological activity of the blue pigments derived from genipin has not been reported. METHODOLOGY/PRINCIPAL FINDINGS The anti-inflammatory effect of blue pigments was studied in lipopolysaccharide (LPS) stimulated RAW 264.7 macrop...

A high-performance liquid chromatography (HPLC) method is presented with which a direct determination of the phytoplankton biomass is possible. By correlating over 100 samples investigated with HPLC as well as microscopically, it has been shown that phytoplankton biomass is described very accurately by determining the concentration of accessory pigments. In contrast to earlier studies, we made ...