Results 21 to 30 of about 37,556 (266)

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

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

Identification, Characterization and Antioxidant Activity of Yellowish-Orange Pigments Actinobacteria

Hayati Journal of Biosciences, 2023
Actinobacteria are Gram-positive bacteria that can produce various secondary metabolites, including pigments that have potential as antioxidants. This study assessed the characteristics of yellowish-orange pigmented actinobacteria.
Farhana Halimah Rusyda, Irmanida Batubara, Yulin Lestari   +2 more
doaj   +1 more source

Colour cluster analysis for pigment identification [PDF]

SPIE Proceedings, 2008
This paper presents image processing algorithms designed to analyse the colour CIE Lab histogram of high resolution images of paintings. Three algorithms are illustrated which attempt to identify colour clusters, cluster shapes due to shading and finally to identify pigments.
Martinez, Kirk, Goodall, Simon
openaire   +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

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

Natural Substrates and Culture Conditions to Produce Pigments from Potential Microbes in Submerged Fermentation

Fermentation, 2022
Pigments from bacteria, fungi, yeast, cyanobacteria, and microalgae have been gaining more demand in the food, leather, and textile industries due to their natural origin and effective bioactive functions.
Chatragadda Ramesh, V. R. Prasastha, Mekala Venkatachalam, Laurent Dufossé   +3 more
doaj   +1 more source

Combined photoluminescence and Raman microscopy for the identification of modern pigments: explanatory examples on cross-sections from Russian avant-garde paintings

Heritage Science, 2019
In conservation science, the identification of painting materials is fundamental for the study of artists’ palettes, for dating and for understanding on-going degradation phenomena.
Alessia Artesani, Marta Ghirardello, Sara Mosca, Austin Nevin, Gianluca Valentini, Daniela Comelli   +5 more
doaj   +1 more source