Natural Pigments From Micrococcus aloeverae and Exiguobacterium aestuarii Strain as Sustainable Textile Dyes.

Pigments, used as colouring agents for centuries, can be derived from nature or synthesized in labs. However, artificial dyes often pose health and environmental risks, leading to increased interest in natural pigments, particularly those from bacteria. This study investigates extracting and characterizing natural pigments from Micrococcus aloeverae (orange pigment) and Exiguobacterium aestuarii (yellow pigment).

Bacteria as a source of biopigments and their potential applications.

From the prehistoric period, the utilization of pigments as colouring agents was an integral part of human life. Early people may have utilized paint for aesthetic motives, according to archaeologists. The pigments are either naturally derived or synthesized in the laboratory.

Characterization of β-Cryptoxanthin and Other Carotenoid Derivatives from Rhodotorula taiwanensis, A Novel Yeast Isolated from Traditional Starter Culture of Assam.

The present investigation was intended to characterize pigments for the first time from Rhodotorula taiwanensis (LC011412) yeast isolated from the ethic fermentation starter culture source meant to evaluate its carotenoid contents for beneficial applications. The pigments were extracted by an optimized solvent system, purified by flash chromatography and were identified by TLC and UV/VIS spectroscopy. The absorbance spectra confirmed the presence of β-carotene, β-cryptoxanthin, torulene and torularhodin that showed maximum absorbance (λ ) within the ranges.