Results 31 to 40 of about 41,681 (307)

Stability and Components Identification of Monascus ruber´s pigments [PDF]

Journal of Food and Dairy Sciences, 2017
The aim of this study is to evaluate the stability of red, orange and yellow pigments produced from Monascus ruber Went AUMC5705 under the conditions of both solid state fermentation (SSF) and liquid state fermentation (LSF).
H. Abdel-Raheam, Nanis Gomah
doaj   +1 more source

Identification of the EPR signal of S2− in green ultramarine pigments [PDF]

, 2011
Green and blue ultramarine pigments are characterized by the sodalite structure Na6(Al6Si6O24) and colored inserted species. These chromophores are sulfur species: S3− (blue) and S2− (yellow). Both radicals are encapsulated inside the β-cages.
Moissette, A., Alain Moissette, Vezin, H., Katarzyna Raulin, Bertrand Ledé, Ledé, B., Gobeltz, N., Noëlle Gobeltz, Touati, N., Hervé Vezin, Raulin, K., Nadia Touati   +11 more
core   +1 more source

Barumiki antocyjanowe u Iris germanica [Anthocyanin pigments in Iris germanica L.]

Acta Agrobotanica, 2015
Anthocyanin pigments occurring in the flowers of Iris germanica were investigated in five varieties: Rota, Wedgewood, Empress of India, Deputate Nomblot and Joanna.
J. Szczepańska, M. Solecka
doaj   +1 more source

Lacquerware Pigment Identification with Fixed and Mobile Raman Microspectrometers: A Potential Technique to Differentiate Original/Fake Artworks

Arts, 2013
(FT) Raman spectroscopy is used for the first time to identify pigments used in 19th & 20th century Japanese and Vietnamese Lacquerwares. IR spectroscopy is used to assess the Lacquer matrix.
Philippe Colomban, Diana Mancini
doaj   +1 more source

On the use of photobleaching to reduce fluorescence background in Raman spectroscopy to improve the reliability of pigment identification on painted textiles [PDF]

, 2006
Subjecting a specimen of red lead watercolour paint on silk to photobleaching was demonstrated to be a simple means by which to engineer a reduction in the magnitude of the fluorescent background that was approximately exponential with time, with a ...
Macdonald, A. M., Macdonald, A.M., Wyeth, P., Wyeth, P.   +3 more
core   +1 more source

Procedimentos analíticos para identificação de antocianinas presentes em extratos naturais Analytical procedures for identifying anthocyanins in natural extracts

Química Nova, 2008
Anthocyanins are among the most important plant pigments. Due to their potential benefits for human health, there is considerable interest in these natural pigments.
Paulo Henrique Março, Ronei Jesus Poppi, Ieda Spacino Scarminio   +2 more
doaj   +1 more source

HPLC-DAD-ESI/MS Identification of Light Harvesting and Light Screening Pigments in the Lake Sediments at Edmonson Point

The Scientific World Journal, 2013
The composition of sedimentary pigments in the Antarctic lake at Edmonson Point has been investigated and compared with the aim to provide a useful analytical method for pigments separation and identification, providing reference data for future ...
Rita Giovannetti, Leila Alibabaei, Marco Zannotti, Stefano Ferraro, Laura Petetta   +4 more
doaj   +1 more source

Characterization of carotenoid pigments from bacterial symbionts of soft-coral Sarcophyton sp. from North Java Sea

International Aquatic Research, 2017
Marine bacteria produce natural pigments; however, the ability of marine bacterial symbionts to produce natural pigments has been less studied. Marine bacteria associated with soft-coral Sarcophyton sp. collected from Karimunjawa Island were successfully
Lia Kusmita, Erlita Verdia Mutiara, Handung Nuryadi, Petrick Ariska Pratama, Awang Surya Wiguna, Ocky Karna Radjasa   +5 more
doaj   +1 more source

Correlation of Visible Reflectance Spectrometry and Portable Raman Data for Red Pigment Identification

Heritage
The accurate identification of pigments is of principal relevance in the field of cultural heritage conservation and restoration practices. In this preliminary study, a first attempt to set up a procedure for accurate red pigment identification, based on
Anna M. Gueli, Rosaria Galvagno, Adriana Incardona, Eleonora Pappalardo, Giuseppe Politi, Giuseppe Paladini, Giuseppe Stella   +6 more
doaj   +1 more source

Optical and colorimetric characterization on binary mixtures prepared with coloured and white historical pigments [PDF]

, 2018
The main goal of the paper is the optical and colorimetric characterization of the pigment mixtures realized with pure pigments of the principal artist's hues and white pigments through spectrophotometric analysis.
S. Gallo, Salvatore Gallo, S. Pasquale, Stefania Pasquale, Anna Maria Gueli, A. M. Gueli   +5 more
core   +1 more source