Article
Food Science & Technology
Shi Nie, Laihao Li, Yueqi Wang, Yanyan Wu, Chunsheng Li, Shengjun Chen, Yongqiang Zhao, Di Wang, Huan Xiang, Ya Wei
Summary: This study identified and quantified volatile organic compounds (VOCs) in fermented sea bass using gas chromatography-ion mobility mass spectrometry (GC-IMS) and gas chromatography-mass spectrometry (GC-MS). Aldehydes were found to be the principal contributors to the overall flavor of fermented sea bass, and several characteristic VOCs were identified. GC-IMS was demonstrated to rapidly detect VOCs, providing a theoretical basis for studying flavor formation in fermented sea bass.
Article
Chemistry, Analytical
Sophia A. Schreckenbach, Denina Simmons, Adam Ladak, Lauren Mullin, Derek C. G. Muir, Myrna J. Simpson, Karl J. Jobst
Summary: This study developed a suspect screening method based on industrial compounds with bioaccumulation potential. Results showed that SQDIA has a significantly lower false-positive rate compared to standard DIA. Through suspect screening and nontargeted screening, multiple pollutants were identified, with some compounds confirmed through standards and structural analysis.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Tien Le, Ronny Priefer
Summary: Despite new approaches in cancer treatment and diagnosis, overall mortality remains a major concern. New technologies, such as SPME/GC-MS, SIFT-MS, PRT-MS, IMS, and Colorimetric Sensors, have been introduced to analyze breath VOCs for possible cancer diagnoses. This article highlights the importance of these new technologies in detecting and quantifying VOCs.
Article
Immunology
Waqar M. Ahmed, Dominic Fenn, Iain R. White, Breanna Dixon, Tamara M. E. Nijsen, Hugo H. Knobel, Paul Brinkman, Pouline M. P. Van Oort, Marcus J. Schultz, Paul Dark, Royston Goodacre, Timothy Felton, Lieuwe D. J. Bos, Stephen J. Fowler
Summary: Microbial volatiles were detected in the exhaled breath of mechanically ventilated patients with bacterial lung infection. Concentration of isovaleric acid and isovaleraldehyde were higher in patients with Staphylococcus aureus. Indole was higher in patients with bacteria known to metabolize tryptophan.
CLINICAL INFECTIOUS DISEASES
(2023)
Article
Biochemical Research Methods
Ikuo Ueta, Syuhei Kamei, Yoshihiro Saito
Summary: A rapid and quantitative analytical method for volatile chlorinated hydrocarbons and benzene in soil samples was developed using a novel extraction device, yielding promising results in GC analysis.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Biochemistry & Molecular Biology
Ruben Epping, Lilly Bliesener, Tilman Weiss, Matthias Koch
Summary: The aim of this study was to identify specific marker substances in the aroma of truffles. The aroma profile of different truffle species was analyzed using gas chromatography mass spectrometry. The results suggest that truffle dogs mainly perceive truffle aroma through dimethyl sulfide and dimethyl disulfide.
Article
Biochemistry & Molecular Biology
Jorge Mestre-Tomas, David Esgueva-Vila, Alba Fuster-Alonso, Federico Lopez-Moya, Luis V. Lopez-Llorca
Summary: Fungal volatile organic compounds (VOCs) are responsible for fungal odor and have important ecological roles. This study analyzed the effect of chitosan on the production of VOCs in Pochonia chlamydosporia, a nematophagous fungus used in agriculture. The presence of chitosan resulted in the production of specific VOCs, and other VOCs changed their abundance due to the effect of chitosan and fungal age. These findings highlight the potential use of chitosan as a modulator of VOC production in P. chlamydosporia.
Article
Chemistry, Analytical
Hehe Tian, Haichao Wen, Xinquan Yang, Siying Li, Jingming Li
Summary: This study utilized two different chromatography methods to analyze the volatile organic compounds in feces and urine of AD model mice treated with anthocyanins, revealing differences in VOCs content between the AD model group and the anthocyanin control group, which may provide insights into the mechanism of action of anthocyanins on AD.
MICROCHEMICAL JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Linda Mezmale, Marcis Leja, Anna Marija Lescinska, Andrejs Pcolkins, Elina Kononova, Inga Bogdanova, Inese Polaka, Ilmars Stonans, Arnis Kirsners, Clemens Ager, Pawel Mochalski
Summary: This study investigated the volatile signatures formed by VOCs released from CRC tissue using headspace solid-phase microextraction gas chromatography-mass spectrometry. The results showed that both cancerous and non-cancerous tissues emit 138 common VOCs, and there are 10 volatiles present in at least 90% of both types of samples. Additionally, the study found that four compounds had increased emissions and eleven compounds had reduced release from cancer tissue. These findings suggest that the VOCs signature of CRC tissue is altered by the presence of CRC and can potentially serve as biomarkers.
Article
Chemistry, Analytical
Yalan Hu, Yuefan Liu, Yixin Kuang, Suxin Zhou, Luyi Chen, Ningbo Zhou, Juan Zheng, Gangfeng Ouyang
Summary: In this study, a composite hydrogen-bonded organic framework (MA/PFC-1) was successfully constructed as an ideal coating material for solid phase microextraction (SPME). The MA/PFC-1 fiber exhibited satisfactory enrichment factors for nitroaromatic compounds (NACs) and was further used for the precise determinations of NACs in water samples. The developed analytical method showed low limits of detection and good reproducibility.
ANALYTICA CHIMICA ACTA
(2023)
Article
Food Science & Technology
Zewei Zhang, Hongwu Ji, Di Zhang, Shucheng Liu, Xiaoshan Zheng
Summary: In this study, the role of amino acids in the formation of volatile substances during the drying process of Penaeus vannamei was investigated. The results showed that the type and content of volatile components significantly increased in samples with moisture contents between 30% and 5%, and basic amino acids (Arg, Lys, and His) had a strong correlation with the formation of pyrazines.
Article
Environmental Sciences
Morgan W. Conrady, Markus Bauer, Kyoo D. Jo, Donald M. Cropek, Ryan R. Busby
Summary: A SPME-GC-MS method was developed to successfully measure emissions of geosmin and 2-MIB from disturbed and undisturbed soils. 2-MIB was consistently detected at higher concentrations than geosmin, suggesting it may be more useful for soil emission monitoring and more sensitive to low levels of soil disturbance.
Article
Agriculture, Multidisciplinary
Michaela Maleckova, Tomas Vrzal, Jana Olsovska, Jana Sobotnikova
Summary: This study focuses on the identification and structural characterization of nitrite reaction products in beer, discovering 19 representatives of nitroso, nitro, oxime, and even cyano compounds. The presence of these compounds in non-treated beers was confirmed through screening in 16 authentic beer samples.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Food Science & Technology
JianCai Zhu, YunWei Niu, Mingquan Huang, ZuoBing Xiao
Summary: This study is the first to investigate the aroma characteristics of Yingjia Gongjiu (YJGJ), a popular strong-aroma-type baijiu, from the perspective of sulfur-containing compounds. It identified key sulfur-containing compounds and enantiomers that contribute to the aroma of YJGJ. This research provides an important theoretical basis for improving the quality and identifying the quality of YJGJ and other strong-aroma-types of baijiu.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Microbiology
Nina M. Frerichs, Sofia el Manouni el Hassani, Nancy Deianova, Mirjam M. van Weissenbruch, Anton H. van Kaam, Daniel C. Vijlbrief, Johannes B. van Goudoever, Christian V. Hulzebos, Boris. W. Kramer, Esther J. d'Haens, Veerle Cossey, Willem P. de Boode, Wouter J. de Jonge, Alfian N. Wicaksono, James A. Covington, Marc A. Benninga, Nanne K. H. de Boer, Hendrik J. Niemarkt, Tim G. J. de Meij
Summary: Early detection of late-onset sepsis (LOS) in preterm infants is essential. Fecal volatile organic compounds (VOCs) can serve as a non-invasive biomarker for detecting LOS. The study analyzed fecal samples of LOS infants and matched controls using gas chromatography-ion mobility spectrometry and gas chromatography-time of flight-mass spectrometry. Differences in VOCs were found before the onset of Escherichia coli LOS and gram-negative LOS. This study highlights the potential of VOCs as a non-invasive preclinical diagnostic biomarker for LOS.
Article
Biotechnology & Applied Microbiology
Bashir Ghanim, James J. Leahy, Thomas F. O'Dwyer, Witold Kwapinski, J. Tony Pembroke, John G. Murnane
Summary: The study explores the use of modified hydrochar derived from acid-treated poultry litter for the adsorption of Cr(VI) from aqueous solutions. Results show pH-dependent adsorption of Cr(VI) with high capacity and potential for regeneration.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Review
Chemistry, Physical
Anastasiya Kutuzova, Tetiana Dontsova, Witold Kwapinski
Summary: The widespread occurrence of antibiotics in water due to their extensive use in human and veterinary medicine has led to the rapid development of antimicrobial resistance. TiO2-based photocatalysis shows promise in addressing this issue in a sustainable and cost-efficient manner.
Article
Energy & Fuels
Samar Hadroug, Salah Jellali, Ahmed Amine Azzaz, Marzena Kwapinska, Helmi Hamdi, James J. Leahy, Mejdi Jeguirim, Witold Kwapinski
Summary: This research demonstrated that post-modifying biochar can significantly enhance its surface properties and phosphorus recovery efficiency. Phosphorus recovery mainly occurs homogeneously on monolayer surfaces through adsorption, precipitation, and electrostatic interactions, while desorption efficiency of phosphorus is influenced by solution pH values.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Multidisciplinary
Anastasiya Kutuzova, Tetiana Dontsova, Witold Kwapinski, James J. Leahy, Jennifer Strunk
Summary: TiO2 nanoparticles synthesized by sol-gel and hydrothermal methods showed good photocatalytic removal efficiency for antibiotics under UVA light. The sol-gel synthesized sample exhibited higher crystallinity but lower specific surface area, while the hydrothermal synthesized sample had a higher specific surface area.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2023)
Article
Humanities, Multidisciplinary
Ewa Lisowska, Angelina Rosiak, Agata Sady-Bugajska, Joanna Kaluzna-Czaplinska
Summary: This study presents the results of botanical and gas chromatographic studies on fragments of roasters from the Sudetes Mountain area and Sudetic Foreland. The analysis showed that these vessels were used for thermal processing of cereal grains during the early Middle Ages, suggesting an earlier start of agrarian activity in the region.
Article
Biochemistry & Molecular Biology
Paulina Gatarek, Joanna Kaluzna-Czaplinska
Summary: Autism Spectrum Disorders (ASD) are associated with metabolic and nutritional abnormalities. Supplementation was found to affect the levels of HVA and VMA, and potentially influence the behavior of children with ASD. Further research on the effects of supplementation on these metabolites and their impact on ASD children's levels, behavior, and physical symptoms is needed.
Article
Biochemistry & Molecular Biology
Jakub Idkowiak, Grazyna Kubiak-Tomaszewska, Paulina Gatarek, Laukasz Marczak, Joanna Kaluzna-Czaplinska, Wieslaw Tarnowski, Mariusz Uryszek, Barbara Bobrowska-Korczak
Summary: Lesniowski-Crohn's disease is a chronic inflammatory bowel disease that requires surgical intervention to improve quality of life and relieve symptoms. This study found changes in blood metabolome three days after ileo-colic resection, indicating a high energy demand during the post-operative period. These results might contribute to the discussion on perioperative nutrition.
Article
Chemistry, Multidisciplinary
Marzena Kwapinska, Italo Pisano, James J. Leahy
Summary: The disposal of waste-activated sludge from milk processing companies is an increasing concern due to nutrient loss and soil contamination. This study proposes the recovery of nutrients through biochar obtained from the slow pyrolysis of the waste. The properties of the biochar were examined, and it was found that most biochars meet the specified limits for nutrients and contaminants required for organic-mineral fertilizer. However, a minimum solid content of 30% in the waste is necessary for energetically sustainable biochar production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Paulina Gatarek, Joanna Sekulska-Nalewajko, Barbara Bobrowska-Korczaka, Malgorzata Pawelczyk, Karol Jastrzebski, Andrzej Glabinski, Joanna Kaluzna-Czaplinska
Summary: Plasma metabolome analysis can provide valuable information on altered metabolites in patients with Parkinson's disease (PD). This study identified a panel of metabolites that could discriminate PD from controls with high accuracy and revealed metabolic pathways associated with the pathophysiology of PD.
Article
Biochemistry & Molecular Biology
Josko Osredkar, Kristina Kumer, Teja Fabjan, Maja Jekovec Vrhovsek, Jerneja Macek, Mojca Zupan, Barbara Bobrowska-Korczak, Paulina Gatarek, Angelina Rosiak, Joanna Giebultowicz, Geir Bjorklund, Salvatore Chirumbolo, Joanna Kaluzna-Czaplinska
Summary: Metabolic disorders and nutritional deficiencies in ASD children can be identified by analyzing levels of urinary-modified compounds. This study found elevated levels of O-methylguanosine and 7-methylguanosine, and significantly lower levels of 3-methyladenine, 1-methylguanine, 1-methyladenosine, 7-methylguanine, and 8-hydroxy-2'-deoxyguanosine in ASD children compared to controls. The results suggest that modified nucleosides/bases can play a role in the pathophysiology of ASD.
ACTA BIOCHIMICA POLONICA
(2023)
Article
Biochemistry & Molecular Biology
Josko Osredkar, Barbara Zvar Baskovic, Petra Finderle, Barbara Bobrowska-Korczak, Paulina Gatarek, Angelina Rosiak, Joanna Giebultowicz, Maja Jekovec Vrhovsek, Joanna Kaluzna-Czaplinska
Summary: Autism spectrum disorder (ASD) is a complex developmental disorder that affects communication and behavior. This study found higher levels of uremic toxins, p-cresyl sulphate (pCS) and indoxyl sulphate (IS), in the urine of children with ASD compared to healthy children. Additionally, lower levels of trimethylamine N-oxide (TMAO), symmetric dimethylarginine (SDMA), and asymmetric dimethylarginine (ADMA) were observed in ASD patients.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Marzena Kwapinska, Italo Pisano, James J. Leahy
Summary: This study investigates the potential of hydrothermal carbonization (HTC) for nutrient recovery from dairy processing sludge (DPS). The findings show that the hydrochars (biochars) produced through HTC meet the requirements for organo-mineral fertilizers, but further research on plant growth and field tests are needed to fully assess their agronomic potential.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Review
Chemistry, Multidisciplinary
Ayman Hijazi, Nidal Khalaf, Witold Kwapinski, J. J. Leahy
Summary: This review explores the catalytic valorisation of agroforestry biomass towards high-value chemicals, particularly gamma-valerolactone. It focuses on the role of catalysts, highlighting the efficiency of the hydrogenation of levulinic acid through an internal hydrogen transfer reaction with formic acid. The review also discusses heterogeneous catalysts and the use of photo catalysis for H-2 production. Overall, it provides readers with valuable knowledge and identifies research gaps in the field.
