Introduction: The color of Clausena lansium L. Skeels cv. Jixin fruit peel is brown (BP), while the mutant cv. Zijin had purple fruit peels (PP). The coloration of the peels was attributed to ...

Deep beneath Rome’s Domus Aurea, archaeologists have unearthed a rare ingot of Egyptian blue — the world’s first synthetic pigment.

Researchers are investigating how to increase melanin in the human body, but there are currently few known methods that allow us to naturally increase production of this pigment. Melanin is produced ...

Archaeologists excavating the remains of Rome's "Golden House," the opulent palace that Emperor Nero built for himself right across the street from the Colosseum, recently uncovered a rare chunk of ...

Vitiligo on the penis occurs when patches of skin change color, just as they can on other parts of the body. These melanin (skin pigment) changes occur in about 1% of the United States population, ...

Archaeologists excavating near the Colosseum found a rare chunk of Egyptian blue pigment dating back about 2,000 years. Photo from Simona Murrone and the Colosseum Archaeological Park Across the ...

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This method offers new opportunities for a better understanding of the chemical changes in aging oil paint samples as well as investigation of organic pigments and binders. Article subjects are ...