Results 21 to 30 of about 2,632,364 (306)

Identification of black sturgeon caviar pigment as eumelanin

Food Chemistry, 2022
Reported herein is the purification of the pigment of black sturgeon caviar and its unambiguous identification as a typical eumelanin by means of chemical degradation coupled with electron paramagnetic resonance (EPR) evidence. HPLC and LC-MS analysis of oxidative degradation mixtures revealed the formation of pyrrole-2,3,5-tricarboxylic acid (PTCA), a
Panzella L., Benning K., Nesbeth D. N., Setaro B., D'Errico G., Napolitano A., d'Ischia M.   +6 more
openaire   +4 more sources

Early 20th C Russian painting? Raman identification of modern pigments on a pastel supposedly Painted by the renowned artist Natalia Goncharova [PDF]

, 2014
A pastel painting considered to have been painted by renowned Russian artist Natalia Goncharova in c. 1913 has been shown by Raman microscopy of the pigments to have been painted after 1952, with the identification of dioxazine violet.
Robin J. H. Clark, Tracey D. Chaplin, Singer, Brian, Chaplin, Tracey, Brian W. Singer, Clark, Robin   +5 more
core   +1 more source

Partial quantification of pigments extracted from the zooxanthellate octocoral Sinularia flexibilis at varying irradiances [PDF]

, 2010
Chlorophyll-a (chl-a) and carotenoid pigments of the zooxanthellate octocoral Sinularia flexibilis were analyzed using high performance liquid chromatography following exposure to three light intensities for over 30 days. From the coral fragments located
Lamers, P.P., Khalesi, M.K.
core   +1 more source

STUDY ON THE SPECTRAL MIXING MODEL FOR MINERAL PIGMENTS BASED ON DERIVATIVE OF RATIO SPECTROSCOPY-TAKE VERMILION AND STONE YELLOW FOR EXAMPLE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Hyperspectral remote sensing is a completely non-invasive technology for measurement of cultural relics, and has been successfully applied in identification and analysis of pigments of Chinese historical paintings.
H. Zhao, Y. Hao, X. Liu, M. Hou, X. Zhao
doaj   +1 more source

Camera Color Correction for Cultural Heritage Preservation Based on Clustered Data

Journal of Imaging, 2021
Cultural heritage preservation is a crucial topic for our society. When dealing with fine art, color is a primary feature that encompasses much information related to the artwork’s conservation status and to the pigments’ composition.
Marco Trombini, Federica Ferraro, Emanuela Manfredi, Giovanni Petrillo, Silvana Dellepiane   +4 more
doaj   +1 more source

Identification by RP-HPLC-DAD, FTIR, TGA and FESEM-EDAX of natural pigments prepared from Datisca cannabina L

, 2012
In this study, natural pigments from the hemp (Datisca cannabina L) dye plant were prepared by using KAI(SO4)(2)center dot 12H(2)O (alum), FeSO4 center dot 7H(2)O and SnCl2 center dot 2H(2)O mordants.
ÇAKMAKÇI, EMRAH
core   +2 more sources

A Groupware for Pigment Identification in Cultural Heritage

International Journal of Virtual Reality, 2009
The preservation of cultural heritage is a multidisciplinary field of study that is aimed at analyzing and preserving ancient artifacts. Nowadays, cultural heritage investigators can make use of available non-invasive solutions able to provide useful information about materials, techniques, and retouches.
C. E. Palazzi, ROCCETTI, MARCO
openaire   +7 more sources

Studying pigments on painted plaster in Minoan, Roman and Early Byzantine Crete. A multi-analytical technique approach [PDF]

, 2011
Wall paintings spanning two millennia of Cretan painting history and technology were analysed in an effort to determine similarities and evolutions of painting materials and technology. A multi-technique approach was employed that combined the use of (a)
Apostolaki, C., Panayiotis Siozos, Chryssa Apostolaki, Derham, B., Perdikatsis, V., Demetrios Anglos, Jones, R.E., Perdikatsis Vasilis(http://users.isc.tuc.gr/~vperdikatsis), Philippidis, A., Anglos, D., Περδικατσης Βασιλης(http://users.isc.tuc.gr/~vperdikatsis), Richard Jones, Agni Terlixi, Aggelos Philippidis, Vasilios Perdikatsis, Siozos, P., Polly Westlake, Terlixi, A., Brendan Derham, Anglos, Demetrios(http://viaf.org/viaf/36324445), Westlake, P.   +20 more
core   +1 more source

Identification and quantification of anthocyanin pigments in colored rice [PDF]

Nutrition Research and Practice, 2008
Anthocyanin pigments from varieties of black, red and wild rice were identified and quantified to evaluate their potential as nutritional function, natural colorants or functional food ingredients. Anthocyanin extraction was conducted with acidified methanol with 0.1M HCl (85:15, v/v) and identification of anthocyanin, aglycone and sugar moieties was ...
Kim, Min-Kyoung, Kim, Han-ah, Koh, Kwangoh, Kim, Hee-Seon, Lee, Young Sang, Kim, Yong Ho   +5 more
openaire   +2 more sources

DESIGNING AND CONSTRUCTION OF THE SPECTRAL LIBRARY FOR TYPICAL PIGMENTS USED IN CHINESE PAINTINGS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Suffered from the environmental changes and human’s influence, Chinese paintings are facing a worrying situation in documentation, which leads urgent into establishing digital archives to realize the permanent preservation of its surface information ...
S. Lyu, S. Lyu, Y. Liu, Y. Liu, M. Hou, M. Hou, Z. Gao, Z. Gao, X. Yang, X. Yang, M. Gu, M. Gu   +11 more
doaj   +1 more source