Article
Biotechnology & Applied Microbiology
T. Nitrosetein, M. Wongwattanakul, C. Chonanant, C. Leelayuwat, N. Charoensri, P. Jearanaikoon, A. Lulitanond, B. R. Wood, P. Tippayawat, P. Heraud
Summary: This study successfully differentiated 60 clinical isolates of Enterococcus faecium and Enterococcus faecalis using ATR-FT-IR spectroscopy and chemometric modelling. The support vector machine (SVM) was found to be the best classification model with the highest correlation to PCR results.
JOURNAL OF APPLIED MICROBIOLOGY
(2021)
Article
Instruments & Instrumentation
Leigh C. Ward
Summary: Conventional methods for measuring deuterium concentration in body fluids involve isotope ratio mass spectrometry or FT-IR spectroscopy. This study explores an alternative method, ATR FT-IR, which allows for faster analysis with smaller sample volumes. The ATR FT-IR method demonstrated high precision in measuring deuterium in plasma, making it suitable for use in pediatrics where minimal blood sampling is required.
APPLIED SPECTROSCOPY
(2021)
Article
Instruments & Instrumentation
Maya Musa, Thomas G. Kaye, Willy Bieri, Adolf Peretti
Summary: This study utilized micro-ATR technology to analyze three Burmite samples, combining UV imaging technique with infrared spectroscopy to study fluorescence information and molecular vibrational modes of amber, aiming to comprehensively characterize the Burmese amber collection.
APPLIED SPECTROSCOPY
(2021)
Article
Instruments & Instrumentation
Jakub Budil, Pavla Stenclova, Alexander Kromka, Petra Liskova
Summary: In this study, infrared attenuated total reflection spectroscopy coupled with optical and confocal laser scanning microscopy was used to analyze the real-time development of Pseudomonas syringae biofilm. The kinetics of representative band areas in the spectral window 4000-800 cm(-1) were analyzed to characterize different developmental stages of the biofilm.
APPLIED SPECTROSCOPY
(2023)
Article
Instruments & Instrumentation
Pjotr Meyvisch, Pieter R. Gurdebeke, Henk Vrielinck, Kenneth Neil Mertens, Gerard Versteegh, Stephen Louwye
Summary: This study introduces a new method for infrared spectroscopic analysis of individual dinoflagellate cyst walls, reducing nonchemical artifacts and evaluating the impact of sample preparation, specimen morphology and size, and data processing steps. Guidelines are proposed to facilitate the collection and qualitative interpretation of highly reproducible spectrochemical data, paving the way for a systematic exploration of dinocyst chemistry and its potential as a chemotaxonomical tool or proxy.
APPLIED SPECTROSCOPY
(2022)
Article
Instruments & Instrumentation
Yongliang Liu, Hee-Jin Kim
Summary: Maturity is a critical factor affecting the processing and performance of cotton fiber. Rapid and accurate identification of fiber maturity phenotypes and genotypes is important for breeders. This study explored the use of FT-IR combined with SIMCA-PCA to discriminate between different genotypes of wild type (WT) cotton fibers.
APPLIED SPECTROSCOPY
(2023)
Article
Instruments & Instrumentation
Thulya Chakkumpulakkal Puthan Veettil, Kamila Kochan, Karen J. Edler, Paul De Bank, Philip Heraud, Bayden R. Wood
Summary: Malaria is a significant global health concern, and vibrational spectroscopy shows promise as a rapid and cost-effective tool for early detection. Improvements are needed in the measurement procedures and sample preparation to enhance the efficiency of screening for parasitic infections.
APPLIED SPECTROSCOPY
(2022)
Article
Instruments & Instrumentation
Brian Thomas, Kevin Anderson, Imesha De Silva, Guido Verbeck, Stephen Taylor
Summary: The analysis of collagen stability is important in various fields, and traditional methods for measuring collagen decay rates have limitations. This study introduces a new protocol using ATR FT-IR spectroscopy and SHG imaging to assess bone collagen decay. The results show that ATR FT-IR can serve as a precise and simple tool for measuring bone collagen decay rates, providing a promising alternative to traditional methods.
APPLIED SPECTROSCOPY
(2023)
Article
Instruments & Instrumentation
Linying Zhong, Mingshan Xu, Suqin Sun, Qun Zhou, Ling Dong, Jianbo Chen
Summary: Herbal powder preparations (HPPs) are commonly used in traditional medicine, and their safety and efficacy can be ensured through the use of attenuated total reflection Fourier transform infrared spectroscopy (ATR FT-IR) imaging or mapping. This method allows for the individual measurement of different ingredients in an HPP sample, increasing the specificity and sensitivity of infrared spectral identification. The ATR FT-IR mapping method has been successfully used to identify prescribed and abnormal ingredients in oral ulcer pulvis, demonstrating its feasibility and effectiveness in the identification of HPPs.
APPLIED SPECTROSCOPY
(2023)
Article
Instruments & Instrumentation
Dale Christensen, Aazam Khoshmanesh, David Perez-Guaita, Inaki Iturbe-Ormaetxe, Scott O'Neill, Bayden R. Wood
Summary: Research has shown that attenuated total reflection Fourier transform infrared spectroscopy can successfully detect Wolbachia in Ae. aegypti eggs and differentiate between different strains, with an infection classification accuracy of 97%. Furthermore, it was found that the disruption of host lipid profile by Wolbachia is a key driver in the spectral differences between sample classes.
APPLIED SPECTROSCOPY
(2021)
Article
Instruments & Instrumentation
Alexander Samokhvalov, Stanley McCombs
Summary: Attenuated total reflection Fourier transform infrared (ATR FT-IR) spectroscopy has been modified for in situ time-dependent monitoring of solid-gas reactions in controlled atmosphere. A new gas flow chamber attachment has been described for creating controlled atmosphere surrounding the sample. This method and apparatus show promise for mechanistic studies and analysis of various solid-gas reactions.
APPLIED SPECTROSCOPY
(2023)
Article
Instruments & Instrumentation
Polina Fomina, Antoni Femenias, Michael Hlavatsch, Julian Scheuermann, Nicolas Schaefer, Stephan Freitag, Nageshvar Patel, Achim Kohler, Rudolf Krska, Johannes Koeth, Boris Mizaikoff
Summary: The analytical performance of a compact infrared attenuated total reflection spectrometer using a pyroelectric detector array has been evaluated and compared to a conventional laboratory Fourier transform infrared system for applications in food analysis. Analytical characteristics including sensitivity, repeatability, linearity of the calibration functions, signal-to-noise ratio, and spectral resolution have been derived for both approaches. Representative analytes of relevance in food industries (i.e., organic solvents, fatty acids, and mycotoxins) have been used for the assessment of the performance of the device and to discuss the potential of this technology in food and feed analysis.
APPLIED SPECTROSCOPY
(2023)
Article
Instruments & Instrumentation
Huiqiang Lu, Harumi Sato, Sergei G. Kazarian
Summary: In this study, chemical images were obtained by analyzing the inter- and intramolecular interactions in PHB/PLLA blends during isothermal melt crystallization using in situ ATR FT-IR spectroscopic imaging. The peak position of spectral bands reflected changes in these interactions and provided spatial distribution information. This work demonstrates the potential of in-situ ATR FT-IR spectroscopic imaging in visualizing different types of inter- or intramolecular interactions in multicomponent polymer systems.
APPLIED SPECTROSCOPY
(2021)
Article
Instruments & Instrumentation
Eva Mariasole Angelin, Susana Franca de Sa, Ines Soares, Maria Elvira Callapez, Joana Lia Ferreira, Maria Joao Melo, Mauro Bacci, Marcello Picollo
Summary: Plastics are increasingly used in modern and contemporary art and design, posing a challenge for heritage conservation due to degradation issues. Infrared spectroscopy is a well-established method for analyzing polymeric materials, but limitations exist for in situ investigation of fragile or degraded plastics. Reflectance spectroscopy offers a potential alternative for rapid measurements with minimal contact, though spectral interpretation can be challenging.Comparative studies between different reflectance FT-IR modes, such as ER FT-IR and DRIFTS, have not been extensively explored yet, and this study contributes to a better understanding of their application in plastic analysis.
APPLIED SPECTROSCOPY
(2021)
Article
Instruments & Instrumentation
Andrea Teuber, Robert Stach, Julian Haas, Boris Mizaikoff
Summary: The innovative mid-infrared spectroscopic sensor system developed based on quantum cascade lasers combines the versatility of substrate-integrated hollow waveguides with the robustness of attenuated total reflection crystals. This novel assembly enables evanescent field absorption measurements under unprecedented harsh conditions, making it ideal for field applications where robustness and optical alignment are essential.
APPLIED SPECTROSCOPY
(2022)