Article
Agricultural Engineering
Chao-Yong Wang, Li Tang, Tao Jiang, Qiang Zhou, Jing Li, Yuan-Zhong Wang, Chui-Hua Kong
Summary: This study utilized fusion data, ATR-FTIR, and UV-vis spectra to analyze Eucommia ulmoides leaves from 159 samples across 13 provinces in China, revealing that the SVM model had the best performance for geographical traceability. The study indicated that geographical factors had a larger impact on chemical information than individual gender, and the chemical profiles of Eucommia ulmoides leaves in Jiangxi Province were significantly different from other regions.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Food Science & Technology
Paola Scano
Summary: Infrared spectroscopy is widely used in the wine industry to analyze polyphenolic compounds. This study focused on the MIR spectral region of wine extracts from white and red wines, showing differences in polyphenolic evolution and characteristics. The integration of ATR-FTIR and UV-Vis spectroscopy data provided a more accurate characterization of the MIR fingerprint region for these wines.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Spectroscopy
F. A. Saif, S. A. Yaseen, A. S. Alameen, S. B. Mane, P. B. Undre
Summary: The investigation identified Aspergillus as the major genus on different fruits, with 15 different species differentiated using various techniques. Fourier transform infrared and Raman spectroscopy were found to be useful tools for fast and accurate identification of fungi.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Spectroscopy
Simona Klempova, Michal Oravec, Katarina Vizarova
Summary: This study experimentally examines the stability of plasticized poly (vinyl chloride) (PVC-P) under indoor conditions using spectroscopic methods such as UV-Vis, ATR-FTIR, and Raman spectroscopy. The results expand the knowledge on PVC-P stability and demonstrate the benefits of using non-destructive spectroscopic methods to monitor changes in its characteristic properties induced by aging.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Food Science & Technology
Andrea Bergomi, Valeria Comite, Laura Santagostini, Vittoria Guglielmi, Paola Fermo
Summary: Currently, the ISO 3632 technical standard is used to assess the quality of saffron, but this study proposes a new multi-analytical approach. The results showed that the commercial grading based on the ISO 3632 method did not always match the observations made with other techniques. Additionally, two new techniques, SEM-EDX and ICP-OES, were found to be effective in determining elemental composition and metal content, which are important parameters in assessing spice quality.
Article
Chemistry, Physical
Jayze da Cunha Xavier, Francisco Wagner de Queiroz Almeida-Neto, Priscila Teixeira da Silva, Amanda Pereira de Sousa, Emmanuel Silva Marinho, Marcia Machado Marinho, Janaina Esmeraldo Rocha, Priscila Ramos Freitas, Ana Carolina Justino de Araujo, Thiago Santiago Freitas, Carlos Emidio Sampaio Nogueira, Pedro de Lima-Neto, Paulo Nogueira Bandeira, Alexandre Magno Rodrigues Teixeira, Henrique Douglas Melo Coutinho, Helcio Silva dos Santos
Summary: This study investigated the electronic properties of a chalcone synthesized by Claisen-Schmidt condensation reaction, as well as its potential as a modulator and efflux pump inhibitor in multi-resistant strains of Staphylococcus aureus. The results suggest that the compound could serve as a promising candidate for oral drug development due to its ideal physicochemical and pharmacokinetic properties.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Review
Chemistry, Analytical
Jian Chen, Jie-qing Li, Tao Li, Hong-gao Liu, Yuan-zhong Wang
Summary: This paper reviewed the recent applications of UV-Vis and IR technology coupled with chemometrics in wild edible bolete mushrooms, including species identification, origin and storage duration determination, fraud detection, and antioxidant properties evaluation. These technologies are of great significance for quality control and evaluation of bolete mushrooms.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Dalvani S. Duarte, Francisco H. M. Luzardo, Fermin G. Velasco, Ohana N. de Almeida, Guisela D. R. Z. Bedon, Glauber G. Nascimento, Thais B. V. Andrade, Luiz C. Salay
Summary: This study aimed to develop an adsorbent for protein adsorption in aqueous medium using lignocellulosic materials modified from eucalyptus bark and vegetable tannins. A more efficient resin was prepared containing 10% eucalyptus bark fibers and 90% tannin mimosa by condensation with formaldehyde, and it was characterized by various spectroscopic and physical measurements. Bovine serum albumin (BSA) adsorption was carried out in batch experiments and the most efficient resin achieved a removal rate of 71.6%.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Applied
Simone C. R. Ferreira, Martina Franchi, Alberto A. C. C. Pais, J. Sergio Seixas de Melo
Summary: This study analyzed the first Portuguese postage stamps using non-destructive techniques such as X-Ray fluorescence, Attenuated Total Reflection Fourier Transform Infrared, and Ultraviolet-Visible Reflectance Spectroscopy. The results identified the presence of Prussian blue in blue, green, and brown stamps, as well as other pigments such as chrome and zinc yellow, lead sulphate, and mars red. The study also used chemometric techniques to process the data and distinguish between genuine and forged samples based on the presence of fillers like calcite and kaolinite. Overall, this approach provided extensive information on the composition of the studied postage stamps, including paper and dyes.
Article
Engineering, Chemical
Ryan Leeming, Tariq Mahmud, Kevin J. Roberts, Neil George, Jennifer Webb, Elena Simone, Cameron J. Brown
Summary: Finechemicals produced via batch crystallization require precise control of supersaturation for desired crystal size distribution. A model predictive control (MPC) strategy using a mechanistic model was developed to control supersaturation, which showed excellent performance in simulation. The MPC strategy was implemented on a physical crystallizer, with slightly more instability due to unmodeled heat transfer disturbances. Overall, the level of supersaturation control in a real crystallizer was accurate and precise enough to consider future adaptations for more advanced control objectives.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Spectroscopy
Zhang Jiao, Wang Yuan-zhong, Yang Wei-ze, Zhang Jin-yu
Summary: The quality of Polygonati Rhizoma medicinal materials is closely related to the original plants' origin environment. A total of 133 samples from 9 geographic origins were used to establish a RF model, with mid-level data fusion showing the highest accuracy and performance. This method provides a theoretical basis for the scientific evaluation of medicinal resources of Polygonati Rhizoma.
SPECTROSCOPY AND SPECTRAL ANALYSIS
(2021)
Article
Polymer Science
Alfio Torrisi, Lorenzo Torrisi, Mariapompea Cutroneo, Alena Michalcova, Milena D'Angelo, Letteria Silipigni
Summary: Thin sheets of UHMWPE with different concentrations of CNTs or Fe2O3 NPs were prepared and confirmed by microscopy and spectroscopic techniques. ATR-FTIR and UV-Vis spectroscopy were used to investigate the effects of the embedded nanostructures on the UHMWPE samples. The optical absorption increased regardless of the type of embedded nanostructures, and the optical energy gap decreased with increasing CNT or Fe2O3 NP concentrations.
Article
Chemistry, Multidisciplinary
Ramona Huzum, Andrei Vasile Nastuta
Summary: Emerging plasma technologies at atmospheric pressure show promise in replacing old and expensive methods for wine treatment, with the potential for long-term storage, aging, and decontamination. Experimental results indicate that atmospheric pressure plasma treatment could be a viable option for winemaking, as supported by the correlation between plasma parameters and physico-chemical properties of wine products.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Trent R. Graham, Brandy N. Gartman, Anjelica Bautista, Lindsay E. I. Irwin, Eden J. Shelby, Danielle L. Saunders, Timothy J. Johnson, Mark K. Murphy, Nicolas Uhnak, Andrew M. Ritzmann, James M. Bowen
Summary: This study explores the sensitivity and limitations of various spectroscopic techniques in detecting changes in iodine speciation. The results show that commonly used spectroscopies have different sensitivities to various iodine species. Through the analysis of Raman, FTIR, and NMR spectra, high-resolution autocorrelation spectra are generated to track the acidification-induced and gamma irradiation-induced transformations of iodine. This research provides insights for designing optimal combinations of techniques to detect different forms of iodine.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Crystallography
Dmitrii Pankin, Anastasia Povolotckaia, Mikhail Smirnov, Evgenii Borisov, Anatoly Gulyaev, Alexey Dorochov, Vasiliy Novikov, Sergey Kuznetsov, Oleg Noy, Sergey Belousov, Maksim Moskovskiy
Summary: The article studies the structure, optical properties and stability of Anhydrofusarubin. The computational results obtained using density functional theory are in good agreement with experimental data. The study finds the presence of slightly higher energy tautomers and two conformational enantiomer forms. The vibrational and UV-visible absorption spectra were simulated and interpreted.
