Article
Chemistry, Applied
Jian Liu, Juan Zhu, Feng Zhao, Danhua Guo, Yuanbin She, Yang Zhou
Summary: A novel strategy using galvanic displacement-based substrates for identifying anthraquinone dyes through surface enhanced Raman spectroscopy (SERS) is presented. The use of silver microparticles, particularly dendritic ones, formed by reducing silver nitrate with zinc or copper, allows for a quick and cost-effective SERS analysis within 20 minutes. Textile fibers can be covered almost instantaneously with the substrates once the galvanic displacement reaction is triggered.
Review
Anthropology
Maurizio Aceto
Summary: The present contribution discusses the use of organic colorants in wall paintings, polychrome pottery, and painted stone artworks, focusing on their chemical nature, application methods, and historical usage. Recent studies have shown that these colorants were used continuously in ancient artworks, providing new insights into the study of ancient art.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2021)
Article
Archaeology
Li Ding, Tianyi Gong, Bo Wang, Qin Yang, Wei Liu, Rigzin Pemo, Tsokyi Metok
Summary: The study demonstrates the efficiency of portable fiber optic reflectance spectroscopy in identifying natural dyes in historical textiles, providing a rapid and non-invasive method for large-scale on-site survey.
JOURNAL OF CULTURAL HERITAGE
(2021)
Article
Chemistry, Applied
Karen Cruz Mojica, Mayra Leon Santiago, Emiliano Varela Garcia, Marisol Reyes Lezama, Everardo Tapia Mendoza
Summary: The main purpose of this study was to determine if a method developed in the laboratory by HPLC-ESI-QToF was able to identify the characteristic compounds of the Mexican cochineal (Dactylopius coccus) in freshly dyed wool fiber and following an artificially accelerated aging process. The results showed that the main component, carminic acid, and the respective biomarkers of the Mexican cochineal could be identified with a small amount of sample and in a short time, offering a potential method for conservation purposes of cultural heritage.
COLOR RESEARCH AND APPLICATION
(2023)
Article
Chemistry, Analytical
Mingyi Yao, Jian Liu, Narengaowa, Yonggu Li, Feng Zhao
Summary: Accurate detection of natural dyes in archaeological textiles is achieved using in situ detection of fibers by surface-enhanced Raman scattering (SERS). Two methods for the preparation of SERS substrates are presented, offering advantages such as rapid preparation, easy handling, low cost, high sensitivity, and excellent reproducibility. This minimally invasive, in situ analytical approach provides a valuable tool for analytical applications where sampling is limited.
MICROCHEMICAL JOURNAL
(2023)
Article
Humanities, Multidisciplinary
Diego Tamburini, Joanne Dyer, Caroline Cartwright, Alexandra Green
Summary: This study investigates six Karen textiles from the collection of the British Museum to study the production changes and trade networks during the nineteenth century. The textiles range from the 1830s to the early 1900s and include traditional garments, various colors, and different dyeing and weaving techniques. Non-invasive techniques such as digital microscopy, broadband multispectral imaging, and fiber optic reflectance spectroscopy were used. The results reveal the use of local natural dyes in the older textiles and the introduction of synthetic dyes in the later textiles, along with the use of different mordants and imported fibers from Europe and China.
Review
Multidisciplinary Sciences
Diana Santiago, Joana Cunha, Isabel Cabral
Summary: The use of synthetic dyes has raised concerns about environmental and health impacts, leading to a growing interest in natural dyes as sustainable and eco-friendly alternatives. However, natural dyes have limitations in terms of color shade and fastness properties. This study conducted a systematic literature review of 38 studies on six natural dyes derived from eucalyptus, true indigo, and woad, analyzing their use and considering their chromatic and potential medicinal properties. The research explores the influence of dyeing parameters and auxiliary products on these properties and provides possibilities for a chromatic palette.
Article
Physics, Multidisciplinary
Silvia Innocenti, Marilena Ricci, Giancarlo Lanterna, Raffaella Fontana, Jana Striova, Maurizio Becucci
Summary: Identification of red lakes in painting layers by enhanced Raman spectroscopy is proposed in this study, utilizing the solubility and recrystallization of red lakes in hydrogel to isolate the lake from the painted matrix for identification purposes. This analytical method has been found effective in identifying cochineal and madder lakes, with results compared to experimental data and DFT calculations to define the organometallic complex present. The methodology is tested on aged mock-up panel paintings and historical paintings, supported by reflectance spectra and colorimetric measurements following micro-extraction.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Biochemistry & Molecular Biology
Chutimon Akkapinyo, Kittitat Subannajui, Yingyot Poo-arporn, Rungtiva P. Poo-arporn
Summary: A facile synthesis method for rGO-methionine/SPCE disposable sensor was proposed for determination of food colorants, showing enhanced catalytic activity and high performance for real sample analysis. This modified sensor demonstrated good repeatability and high tolerance to interference substances, with optimized detection ranges and limit of detection for each dye.
Article
Optics
Margherita Longoni, Silvia Bruni
Summary: SERS is a powerful technique for detecting natural dyes, overcoming limitations of conventional Raman spectroscopy. In the artistic field, noninvasive approaches are recommended, but SERS still requires contact with the sample. Fabrication of dry-state measurement substrates allowed successful dry-state SERS spectra collection from dyed wool threads.
OPTICAL ENGINEERING
(2021)
Article
Environmental Sciences
M. Ardusso, A. D. Forero-Lopez, N. S. Buzzi, C. Spetter, M. D. Fernandez-Severini
Summary: The COVID-19 pandemic has led to a significant increase in the use of face masks and other personal protective equipment made of polymeric materials, contributing to plastic pollution. This issue is particularly pronounced in South America.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Physics, Multidisciplinary
S. Innocenti, M. Ricci, D. Quintero Balbas, R. Fontana, J. Striova, M. Becucci
Summary: This study characterized the components of the red dye madder lake using XRD, IR, and UV-Visible spectroscopies, and extracted the dye from painting mock-ups using hydrated and ethanol-rich agar gel beads. The aim of the research was to show the advantages and limitations of Raman spectroscopy and Surface-Enhanced Raman Spectroscopy (SERS) for identifying madder lake constituents in hydrogels used for sample micro-extraction. The main advantage of SERS for madder lake detection is the ability to acquire spectra in random spots in the gel bead without the need for recrystallized grain localization in the dried hydrogel.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Review
Microbiology
Maria Eugenia Jimenez, Ciara M. O'Donovan, Miguel Fernandez de Ullivarri, Paul D. Cotter
Summary: Artisanal fermented products are produced around the world to preserve food, improve safety, increase nutritional value, and add specific flavors. South America has a wide variety of artisanal fermented foods, including indigenous foods and those introduced by European immigrants.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Education, Scientific Disciplines
Valeria P. Careaga, Astrid Blanco Guerrero, Gabriela Siracusano, Marta S. Maier
Summary: This article introduces two common natural sources of red anthraquinones, cochineal insect and the roots of Rubia and Relbunium plants, which have been used for textile dyeing and as lake pigments since ancient times. Carminic acid is the main component of carmine obtained from cochineal. Alizarin and purpurin are found in Rubia roots, while Relbunium roots only contain purpurin. These red anthraquinones have been identified in various cultural heritage objects. High performance liquid chromatography with diode array detection is described as the most suitable method for analyzing these dyestuffs, especially in micro-samples from textiles or pigment layers in paintings and sculptures. Finally, the application of HPLC-DAD analysis in identifying lake pigments in micro-samples of mural paintings in Peruvian churches from the 18th century is discussed.
CHEMISTRY TEACHER INTERNATIONAL
(2023)
Article
Instruments & Instrumentation
Lan Zhang, Shiying Wu, Tingting Zhang, Anqi Li, Gongying Wang, Lingling Wang, Chang Liu, Weihua Li, Jiansheng Li, Rui Lu
Summary: By calcining titanium dioxide (TiO2) precursors at different temperatures, crystallized TiO2 (c-TiO2) and amorphous TiO2 (a-TiO2) nanosheets were generated for investigating the chemical enhancement of semiconductors and increasing the sensitivity of the surface-enhanced Raman spectroscopy (SERS) substrate. A two-dimensional a-TiO2/Ag nanosheet SERS substrate was successfully fabricated, and it showed highly sensitive and repeatable Raman signals compared to c-TiO2 or Ag nanoparticles alone.
APPLIED SPECTROSCOPY
(2023)
Article
Spectroscopy
M. D. Manrique-Ortega, A. Mitrani, E. Casanova-Gonzalez, L. A. Jimenez-Galindo, J. L. Ruvalcaba-Sil
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2019)
Article
Archaeology
Luis Abel Jimenez, Nora A. Perez, Armando Arciniega, Mariana Diaz de Leon, Yareli Jaidar, Edgar Casanova-Gonzalez
JOURNAL OF CULTURAL HERITAGE
(2020)
Article
Multidisciplinary Sciences
Marcela Sepulveda, Denise Pozzi-Escot, Rommel Angeles Falcon, Nicolas Bermeo, Matthieu Lebon, Christophe Moulherat, Philippe Sarrazin, Philippe Walter
Article
Spectroscopy
M. D. Manrique-Ortega, E. Casanova-Gonzalez, A. Mitrani, A. Gonzalez-Cruz, M. Cuevas-Garcia, J. L. Ruvalcaba-Sil
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2020)
Article
Geography, Physical
Marcela Sepulveda
Summary: Through the physicochemical characterization studies, we gain a deeper understanding of rock art practices in southern South America, highlighting the need for a microarchaeological approach and emphasizing the materiality and particularities of rock art practices.
QUATERNARY INTERNATIONAL
(2021)
Article
Engineering, Manufacturing
M. D. Manrique-Ortega, A. Mitrani, E. Casanova-Gonzalez, G. Perez-Ireta, M. A. Garcia-Bucio, I Rangel-Chavez, V Aguilar-Melo, O. G. de Lucio, J. L. Ruvalcaba-Sil, N. Sugiyama, S. Sugiyama
MATERIALS AND MANUFACTURING PROCESSES
(2020)
Article
Humanities, Multidisciplinary
Edgar Casanova-Gonzalez, Miguel angel Maynez-Rojas, Alejandro Mitrani, Isaac Rangel-Chavez, Maria Angelica Garcia-Bucio, Jose Luis Ruvalcaba-Sil, Karla Munoz-Alcocer
Article
Geochemistry & Geophysics
Jose Luis Ruvalcaba-Sil, Luis Barba, Edgar Casanova-Gonzalez, Alejandro Mitrani, Margarita Munoz, Isaac Rangel-Chavez, Miguel angel Maynez-Rojas, Jaqueline Canetas
Summary: The Techinantitla building complex in Teotihuacan is known for its mural paintings, which have suffered significant losses due to looting. Recent interdisciplinary research has focused on studying the remaining heritage through geophysical techniques and non-invasive methodologies, leading to the discovery of possible additional murals and the identification of standardized mural painting practices during the Xolapan period in Teotihuacan.
Article
Anthropology
Francisco Gallardo, Gloria Cabello, Marcela Sepulveda, Benjamin Ballester, Danae Fiore, Alfredo Prieto
Summary: The research discovered rock art site on Tierra del Fuego Island similar to other sites in the southern archipelago and the Pali Aike volcanic field. This suggests that the Fuegian people had navigational technology and cooperative social interaction for survival.
LATIN AMERICAN ANTIQUITY
(2023)
Article
Anthropology
Carlos Lopez-Puertolas, Edgar Casanova-Gonzalez, Alejandro Mitrani, Jose Luis Ruvalcaba-Sil
Summary: This research investigates the color technology of pigments in Teotihuacan mural painting through various scientific techniques. The study reveals a standardization of pigment technology in Teotihuacan, as well as variations in color materials that indicate different strategies for raw material procurement and distribution among the city's architectural assemblages.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2023)
Article
Anthropology
Marcela Sepulveda, Benjamin Ballester, Gloria Cabello, Sebastian Gutierrez, Philippe Walter
Summary: This study focuses on color and polychromy in the prehistory of the Atacama Desert. By analyzing objects from different funerary sites, the research reveals that there was a simultaneous use of visible information transfer and local production of mineral pigments in the late Atacama culture. Through the analysis of chemical composition and physical characteristics, the study also evaluates the social significance of mineral polychromy.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2023)
Article
Archaeology
Benjamin Ballester
BOLETIN DEL MUSEO CHILENO DE ARTE PRECOLOMBINO
(2020)