Review
Biochemistry & Molecular Biology
Roberta Risoluti, Giuseppina Gullifa, Laura Barone, Elena Papa, Stefano Materazzi
Summary: This review presents the latest advancements in on-line thermally induced evolved gas analysis (OLTI-EGA) and provides starting references for their applications. On-line coupling of heating devices and mass spectrometry (EGA-MS) allows for the accurate interpretation of thermally-induced reaction mechanisms and the characterization of evolved products. Selected references from 2019, 2020, and 2021 are collected and briefly described in this review.
Review
Biochemistry & Molecular Biology
Giuseppina Gullifa, Laura Barone, Elena Papa, Stefano Materazzi, Roberta Risoluti
Summary: This article introduces the wide application of on-line thermally induced evolved gas analysis (OLTI-EGA) in various fields and reviews the latest applications of Evolved Gas Analysis coupled with infrared spectrometers (EGA-FTIR) online. The collected references from 2019, 2020, 2021, and early 2022 are briefly described, providing researchers with easy access to sometimes hard-to-locate applications.
Article
Chemistry, Analytical
Ai Shiono, Atsushi Watanabe, Chuichi Watanabe, Robert R. Freeman, William Pipkin, Norio Teramae, Hajime Ohtani
Summary: Evolved gas analysis-mass spectrometry (EGA-MS) was used to characterize the effects of heating materials in oxidative and non-oxidative environments. By modifying the gas inlet system, experiments under oxidative conditions in air could be conducted without loss of sensitivity. The modified method showed improved signal-to-noise ratio and comparable results when analyzing polystyrene and isotactic polypropylene.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Review
Chemistry, Analytical
Rui Su, Tongtong Yang, Xinrui Zhang, Na Li, Xingying Zhai, Huanwen Chen
Summary: Breath analysis is an attractive and non-invasive strategy for monitoring metabolic dynamics in living organisms. Mass spectrometry is a powerful analytical platform for breath analysis, and ambient mass spectrometry has been widely adopted due to its minimal/sample pretreatment requirements. This tutorial review introduces the principles, setup, procedures, applications, and future prospects of mass spectrometry-based techniques for breath analysis, aiming to facilitate further development and application in this field.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Thermodynamics
Ugur Ozveren, Furkan Kartal, Senem Sezer, Z. Sibel Ozdogan
Summary: Understanding the overall picture of steam gasification is crucial for the gasification process. Research shows that using ANN as a machine learning approach can provide a reliable estimation of the thermogravimetric behavior of steam gasification.
Article
Thermodynamics
Wilhan Donizete Goncalves Nunes, Helena Mannochio Russo, Vanderlan da Silva Bolzani, Flavio Junior Caires
Summary: The thermal behavior of two commercially available sweeteners based on Stevia rebaudiana Bertoni was studied using TG-DSC and EGA. LC-MS/MS analysis was conducted to identify the steviol glycosides present in each formulation and the thermal degradation products. The results showed that the formulations exhibited thermal stability up to at least 200 degrees C, with different thermal decomposition products depending on the specific formulation. This can lead to changes in the taste and solubility of the sweeteners.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Analytical
Marco Mattonai, Lucia Andrei, Marian Virgolici, Erika Ribechini
Summary: We used EGA-MS to analyze different varieties of ambers and obtained information on their non-polymeric and polymeric components. The results showed characteristic signals for the different fractions and allowed us to classify most of the samples. Principal component analysis differentiated between succinite and rumanite ambers. EGA-MS is a reliable technique for studying the molecular composition of ambers.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Geochemistry & Geophysics
Adrian P. Broz, Joanna Clark, Brad Sutter, Doug W. Ming, Briony Horgan, Paul Douglas Archer, Lucas C. R. Silva
Summary: Ancient buried soils on Mars may contain preserved organic carbon, making them important targets for investigating potential signs of life. This study examines paleosols from Oregon that are similar to martian soils and finds trace amounts of organic carbon and organic molecules. The age of the organic carbon is estimated using radiocarbon dating to be around 6,200-14,500 years old. These findings suggest that martian paleosols could be a priority location for studying possible biosignatures.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2022)
Article
Thermodynamics
Justyna Sulowska, Magdalena Szumera, Dominika Madej, Bartosz Handke, Konrad Swierczek
Summary: The research aims to explain the differences between nominal and actual chemical compositions of silicate-phosphate glasses in the SiO2-P2O5-K2O-MgO-SO3 system. X-ray fluorescence (XRF) analyses were used to determine the actual compositions. Changes in the chemical composition were studied through differential scanning calorimetry-thermogravimetry-related gas analysis by mass spectrometry (DSC-TG-EGA (MS)) and high-temperature X-ray diffraction (HT-XRD). The release of gaseous products was found to be associated with changes in the chemical composition of sulfur-bearing glasses. Water vapor, carbon dioxide, carbon monoxide, and ammonia were the main gases released during thermal decomposition. Considering the potential use of these glasses as glassy fertilizers, this study is important from an environmental perspective.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Biochemical Research Methods
Nerea Lorenzo-Parodi, Erich Leitner, Torsten C. Schmidt
Summary: This study compares three gas chromatographic methods for analyzing ten iodinated derivatives of aromatic amines, and finds that all methods and most analytes have good detection limits and precision. Urine samples from smokers and non-smokers were successfully analyzed, and differences in concentration were observed.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Thermodynamics
Danyang Su, Xiaopeng Chen, Xiaojie Wei, Jiezhen Liang, Liqun Tang, Linlin Wang
Summary: The thermal decomposition behavior and kinetics of dicyclopentadiene petroleum resin (DPR) and hydrogenated dicyclopentadiene petroleum resin (HDPR) were investigated, revealing that DPR is easier to decompose and undergo repolymerization at high temperature environment, forming a cross-linked structure, whereas HDPR has a lower thermal mass loss rate and higher thermal structure stability.
THERMOCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Federica Nardella, Simona Bellavia, Marco Mattonai, Erika Ribechini
Summary: The co-pyrolysis of biomass and plastic mixtures was studied to investigate the mutual influence on their pyrolytic behaviors, showing synergistic effects. Component-specific thermograms were used to evaluate the presence of synergistic effects, and the KAS model was applied to determine the apparent activation energies of different components.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Analytical
Ian Oesterle, Manuel Pristner, Sabrina Berger, Mingxun Wang, Vinicius Verri Hernandes, Annette Rompel, Benedikt Warth
Summary: Polyphenols, abundant in plants and fungi, have beneficial bioactive properties. High-resolution mass spectrometry (HRMS) is favored for analyzing their complexity. This study evaluated the advantages of HRMS, using untargeted techniques and online resources, for annotating polyphenols and other molecules. Despite the sensitivity loss compared to low-resolution mass spectrometry (LRMS), HRMS is capable of comprehensively investigating human polyphenol exposure, linking it to human health effects and toxicological mixture effects with other xenobiotics.
ANALYTICAL CHEMISTRY
(2023)
Article
Food Science & Technology
Baoyi Wang, Fengfeng Qu, Peiqiang Wang, Lei Zhao, Zhi Wang, Yahui Han, Xinfu Zhang
Summary: Drying is an important factor in the formation of green tea flavor. By adjusting drying temperature, green tea with different aromas can be obtained. Volatile and non-volatile compounds contribute differently to the different aromas, and these compounds are related to the taste characteristics of the tea.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Colin Hastie, Adrian Thompson, Mark Perkins, Vaughan S. Langford, Michael Eddleston, Natalie Z. M. Homer
Summary: Self-poisoning with professional agricultural pesticide products accounts for about 20% of global suicides, with the majority occurring in South Asia and China. Faster detection of co-formulants can aid in early identification of pesticide poisoning and reduce mortality rates. SIFT-MS, a direct mass spectrometry technique, shows great promise as an alternative analytical tool for analyzing cyclohexanone and cyclohexanol in plasma, providing higher sample throughput compared to conventional GC/MS methods.
Article
Chemistry, Analytical
Roberta Risoluti, Giuseppina Gullifa, Francesca Buiarelli, Stefano Materazzi
Article
Medicine, General & Internal
Roberta Risoluti, Giuseppina Gullifa, Vittorio Fineschi, Paola Frati, Stefano Materazzi
Summary: This study uses a novel approach based on thermogravimetry and chemometrics to estimate the time since death in vitreous humor and collect a databank of samples from postmortem examinations. Results demonstrate the ability to predict time of death even in contaminated samples with an accuracy not lower than 70%. The correlation coefficient of the measured versus predicted outcomes was found to be 0.9978, indicating the model's feasibility even in situations involving contaminated vitreous humor.
Article
Polymer Science
Michelina Catauro, Pavel Siler, Jiri Masilko, Roberta Risoluti, Stefano Vecchio Ciprioti
Summary: The present study investigated the structure, morphology, thermal behavior, and bacterial growth analysis of novel three-component hybrid materials synthesized by the sol-gel method. The materials were found to be amorphous and homogeneous regardless of the content of PEG or CGA. The PEG-rich materials retained a lower content of water, while the materials containing CGA had a higher water content due to a larger number of H-bonds with water.
Editorial Material
Biochemistry & Molecular Biology
Roberta Risoluti, Roshan Colah, Stefano Materazzi
FRONTIERS IN MOLECULAR BIOSCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Antonio Gigliuto, Rosalia Maria Cigala, Anna Irto, Maria Rosa Felice, Alberto Pettignano, Demetrio Milea, Stefano Materazzi, Concetta De Stefano, Francesco Crea
Summary: The study investigated the interactions of dopamine with methylmercury(II), magnesium(II), calcium(II), and tin(II) at different ionic strengths and temperatures, and evaluated the sequestering ability of dopamine towards these cations. The results showed that entropy is the driving force of the process, and the stoichiometry of the precipitates formed depends on the metal:ligand ratios and concentrations of the starting solutions.
Review
Biochemistry & Molecular Biology
Roberta Risoluti, Giuseppina Gullifa, Laura Barone, Elena Papa, Stefano Materazzi
Summary: This review presents the latest advancements in on-line thermally induced evolved gas analysis (OLTI-EGA) and provides starting references for their applications. On-line coupling of heating devices and mass spectrometry (EGA-MS) allows for the accurate interpretation of thermally-induced reaction mechanisms and the characterization of evolved products. Selected references from 2019, 2020, and 2021 are collected and briefly described in this review.
Review
Biochemistry & Molecular Biology
Giuseppina Gullifa, Laura Barone, Elena Papa, Stefano Materazzi, Roberta Risoluti
Summary: This article introduces the wide application of on-line thermally induced evolved gas analysis (OLTI-EGA) in various fields and reviews the latest applications of Evolved Gas Analysis coupled with infrared spectrometers (EGA-FTIR) online. The collected references from 2019, 2020, 2021, and early 2022 are briefly described, providing researchers with easy access to sometimes hard-to-locate applications.
Article
Biochemistry & Molecular Biology
Giuseppina Gullifa, Roberta Risoluti, Cristina Mazzoni, Laura Barone, Elena Papa, Alfredo Battistini, Rodrigo Martin Fraguas, Stefano Materazzi
Summary: Recently, there has been an increasing interest in developing functional foods with encapsulated probiotic bacteria due to their positive impact on human health. Incorporating probiotics into dairy products has been a major challenge, especially for non-refrigerated products. This study utilized spray drying technology to produce a novel nutraceutical formulation using lactic acid bacteria (LAB) and demonstrated that it can maintain a good storage stability of probiotics at room temperature. The optimized formulation showed promising characteristics in terms of providing a sufficient amount of viable cells after digestion and protecting the probiotics during the microencapsulation process by spray drying.
Article
Biochemistry & Molecular Biology
Patrizia Caprari, Elisabetta Profumo, Sara Massimi, Brigitta Buttari, Rachele Rigano, Vincenza Regine, Marco Gabbianelli, Stefania Rossi, Roberta Risoluti, Stefano Materazzi, Giuseppina Gullifa, Laura Maffei, Francesco Sorrentino
Summary: The rheological properties of blood, including increased aggregation and reduced deformability of red blood cells, as well as increased adherence to vascular endothelial cells, play a crucial role in the regulation of blood flow in microcirculation and macrocirculation. Thalassemia patients, both transfusion-dependent and non-transfusion-dependent, exhibit altered hemorheological profiles that may indicate vascular impairment and disease severity. Evaluation of hemorheological profiles, along with the levels of inflammation biomarkers, can provide new indicators for preventing thromboembolic events in thalassemia.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2023)
Article
Thermodynamics
Michelina Catauro, Antonio D'Angelo, Marika Fiorentino, Giuseppina Gullifa, Roberta Risoluti, Stefano Vecchio Ciprioti
Summary: The sol-gel process was used to synthesize organic/inorganic hybrid materials by entrapping different amounts of quercetin in a silica matrix. FTIR spectroscopy was used to reveal the nature of bonds between inorganic and organic components. The hybrid materials showed increased mass loss percentages and antibacterial properties against various bacterial strains.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Analytical
Roberta Risoluti, Giuseppina Gullifa, Alfredo Battistini, Stefano Materazzi
Article
Biochemistry & Molecular Biology
Francesco Sorrentino, Laura Maffei, Patrizia Caprari, Rita Cassetta, Donatella Dell'Anna, Stefano Materazzi, Roberta Risoluti
FRONTIERS IN MOLECULAR BIOSCIENCES
(2020)
