Results 51 to 60 of about 2,719,329 (156)

Looking at the Modern to Better Understand the Ancient: Is It Possible to Differentiate Mars Pigments from Archaeological Ochres?

Heritage
This article offers a discussion of the possibility of distinguishing ochres from Mars pigments. The discussion addresses technological, archaeological, and artistic aspects.
Maria Cecilia Carangi, Cristina Corti, Laura Rampazzi   +2 more
doaj   +1 more source

Exploration, Isolation, and Identification of Carotenoid from Bacterial Symbiont of Sponge Callyspongia vaginalis

Ilmu Kelautan, 2017
During the past two decades research on marine bacteria has highlighted the tremendous potential of symbiotic-microorganisms as a source of bioactive secondary.
Iqna Kamila Abfa, Ocky Karna Radjasa, A B Susanto, Handung Nuryadi, Ferry F. Karwur   +4 more
doaj   +1 more source

Identification of organic pigments in tattoo inks and permanent make-up using laser desorption ionisation mass spectrometry [version 2; referees: 2 approved]

F1000Research, 2018
Nowadays, about 12% of the European and 20% of the US population are tattooed. Rising concerns regarding consumer safety, led to legal restrictions on tattoo and permanent make-up (PMU) inks. Restrictions also include bans on certain colourants. Both ink
Markus Niederer, Urs Hauri, Lydia Kroll, Christopher Hohl   +3 more
doaj   +1 more source

High performance liquid chromatography as a micro-destructive technique for the identification of anthraquinone red dyestuffs in cultural heritage objects

Chemistry Teacher International, 2023
This article describes two of the most common natural sources of red anthraquinones that have been used since antiquity for textile dyeing and as lake pigments, namely cochineal insect and the roots of Rubia and Relbunium plants.
Careaga Valeria P., Blanco Guerrero Astrid, Siracusano Gabriela, Maier Marta S.   +3 more
doaj   +1 more source

Pigments and colourants

, 2018
Pigments and colourants are materials that have an enormous impact on how artworks are appreciated. Therefore{,} it is no surprise that since the first applications of Raman spectroscopy in art analysis{,} the study of this group of materials has gained ...
Anastasia Rousaki, Mafalda Costa, Howell G. M. Edwards, Luc Moens, Peter Vandenabeele, Rousaki, Anastasia, Vandenabeele, Peter, Edwards, Howell GM, Moens, Luc, Barrocas Dias Teixeira da Costa, Mafalda   +9 more
core   +1 more source

Raman spectroscopic library of medieval pigments collected with five different wavelengths for investigation of illuminated manuscripts [PDF]

, 2018
Stepwise identification of medieval pigments by Raman spectra data and excitation source.
A. Beeby, Parker, A.W., Beeby, A., C. E. Nicholson, Marucci, G., G. Marucci, A. W. Parker, Nicholson, C.E., Beeby A, Parker AW, Nicholson CE, Marucci G   +11 more
core   +1 more source

Identification of organic pigments in tattoo inks and permanent make-ups using MALDI-TOF mass spectrometry [version 1; referees: 2 approved]

F1000Research, 2017
Nowadays, about 12% of the European and 20% of the US population are tattooed. Rising concerns regarding consumer safety, led to legal restrictions on tattoo inks and permanent make-up (PMU) inks.
Markus Niederer, Urs Hauri, Lydia Kroll, Christopher Hohl   +3 more
doaj   +1 more source

Identification of Novel Pigmentation Modulators by Chemical Genetic Screening [PDF]

Journal of Investigative Dermatology, 2007
There is a continual need for compounds that effectively modulate melanin synthesis. To identify novel pigmentation modulators and their cellular targets, chemical genetic screenings were performed with triazine-based combinatorial libraries that include various linkers as intrinsic components of the small molecules in the library.
Ni-Komatsu, Li, Orlow, Seth J.
openaire   +2 more sources

Bioactive Pigments of Monascus purpureus: Identification and Characterization

Journal of Food and Pharmaceutical Sciences
Monascus purpureus is a filamentous fungus that has long been recognized as one of the main producers of natural pigments. These pigments, including yellow (ankaflavin, monascin), orange (rubropunctatin, monascorubrin), and red (rubropunctamine ...
Resha Resmawati Shaleha, Anna Yuliana, Ira Rahmiyani, Anisa Pebiansyah, Indriyanti Indriyanti   +4 more
doaj   +1 more source

Identification of the orange pigment in Nonomuraea gerenzanensis and development of a pigment-free mutant

AMB Express
The secondary metabolite A40926, a precursor to the glycopeptide antibiotic dalbavancin, is synthesized by the rare actinomycete Nonomuraea gerenzanensis (N. gerenzanensis) within the pharmaceutical industry. The biosynthesis of A40926 is accompanied by the production of an orange pigment, which poses significant challenges and incurs high costs in the
Cheng, Yutong, Gao, Wen, Shi, Shi, Han, Fubo, Dong, Huijun   +4 more
openaire   +2 more sources