Article
Medicine, Legal
Michael Frontz, Stephanie Troupe, Janine DeKing, Renee Hawkins
Summary: The gradual loss of ethanol in stored blood specimens has been well documented, with analyses showing a strong correlation between initial and subsequent results. Despite variation in ethanol concentrations, there is still a significant association between the two analyses. This suggests that previously opened blood tubes can be a reliable alternative when a second tube is not available or compromised.
FORENSIC SCIENCE INTERNATIONAL
(2021)
Article
Multidisciplinary Sciences
Tsz Hei Fong, Wangpan Shi, Guohui Ruan, Siyi Li, Guanghui Liu, Leyun Yang, Kaibin Wu, Jingxian Fan, Chung Lam Ng, Yafang Hu, Haishan Jiang
Summary: This study retrospectively reviewed medical records and constructed a tuberculostearic acid (TBSA)-combined scoring system based on multiple factors, which showed promising results for predicting and diagnosing tuberculous meningitis (TBM).
Article
Chemistry, Multidisciplinary
Jing Liu, Wufeng Fan, Xiaoxia Lv, Cuijuan Wang
Summary: A rapid and selective surface-enhanced Raman scattering method was developed for point-of-care determination of voriconazole concentration in human plasma. Gold nanoparticle solution was used as the SERS substrate and the sensitivity was optimized by controlling the agglomerating conditions. The method showed high repeatability and low detection limit.
Article
Chemistry, Analytical
Daniela Nassini, Fabiola Julieta Alvarez, Ana Ester Bohe, Alejandro Cesar Olivieri
Summary: It is important to thoroughly examine medicinal ethanol to identify and remove organic impurities that may have adverse effects on human health. Gas chromatographic technique can be used to identify these compounds by optimizing parameters such as temperature and gas consumption, leading to improved analysis results.
MICROCHEMICAL JOURNAL
(2023)
Review
Chemistry, Analytical
Justyna Piechocka, Rafal Glowacki
Summary: This overview summarizes all documented analytical methods for the quantification of homocysteine thiolactone (HTL) in biological samples, with a focus on pre-analytical treatment strategies and separation techniques. The review also discusses the advantages, pitfalls, and limitations of the methods, as well as the origin and main metabolites of HTL, and the association between civilization diseases and sulfur-containing compounds' metabolism disorders.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Nourolhoda Razavi, Mohammad Taghi Hamed Mosavian, Zarrin Es'haghi
Summary: In this study, a method combining magnetic micro solid-phase extraction and gas chromatography was developed to analyze the presence of phthalate esters in baby's saliva. The results showed that baby accessories made of soft PVC emit phthalate species and contaminate baby's saliva. Among the phthalate species studied, din-butyl phthalate (DBP) and di (2-ethylhexyl) (DEHP) were found to be released in higher amounts.
MICROCHEMICAL JOURNAL
(2022)
Article
Environmental Sciences
Bruno Siciliano, Cleyton Martins da Silva, Tadeu C. C. de Melo, Pedro C. Vicentini, Graciela Arbilla
Summary: Speciation and quantification of hydrocarbons in exhaust emissions are essential for evaluating MIR and OFP factors with different fuels. This study employed a heart-cutting gas chromatography approach to analyze the HC emissions from flex fuel vehicles in Brazil. The results showed that different fuels had an impact on MIR and OFP factors.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Engineering, Environmental
Xianglei Cao, Changyan Guo, Liugen Zhang, Meng Wang, Jia Guo, Yanfang Ma, Tingxiang Chen, Jide Wang
Summary: In this study, the photocatalytic gas-liquid products and formation rules/paths were summarized using C1-3 alcohols as substrates, and the reaction mechanisms were inferred based on experimental data and calculation. Gaseous products such as CH4, CO, C2H4 or C2H6 were detected along with hydrogen during the photocatalytic alcohols decomposition. The highest hydrogen yield of 65.98 mmol/g within 6 hours was achieved from the photocatalytic decomposition of isopropyl alcohol, which was confirmed to be the best substrate for hydrogen production due to the lowest CO content. The selectivity of acetal produced from ethanol reached 99% in liquid products. This work can promote the development of photocatalytic alcohol decomposition for higher purity hydrogen production and higher value-added liquid products.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Food Science & Technology
Shuo Mu, Nan Ni, Yuting Zhu, Sanne Boesveldt, Markus Stieger
Summary: Foods differing in fat content can be distinguished through olfaction alone. This study explores the mechanism behind humans' ability to discriminate and rank fat content in foods through olfaction. The volatile compound composition of beef and pork samples differing in fat content was analyzed, and certain compounds were found to be responsible for the olfactory discrimination of fat content. It was concluded that the volatile compounds in the headspace contribute to the discrimination of fat content based on olfaction alone.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Wenshuai Wu, Boran Zhang, Weihong Yin, Liping Xia, Yuanjie Suo, Gaozhe Cai, Yang Liu, Wei Jin, Qianbin Zhao, Ying Mu
Summary: EnzyAST, using enzymes as biomarkers, can rapidly identify pathogens and analyze susceptibility, showing great potential in clinical applications.
ANALYTICAL CHEMISTRY
(2023)
Article
Biochemical Research Methods
Javier Pena, Ma Esther Fernandez Laespada, Carmelo Garcia Pinto, Jose Luis Perez Pavon
Summary: A simple method using benzoyl chloride as derivatization reagent and 1,6-diaminohexane as internal standard was developed for determining polyamines and their N-acetylated forms. The method showed good accuracy in detection, quantification, and recovery, and was successfully applied to analyze polyamines in the saliva of 17 volunteers.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Environmental Sciences
Leonardo Sonego Hatschbach, Maria Fernanda Possebon Mazer, Igor Rodrigues dos Santos, Macklini Dalla Nora
Summary: This study found that CNG can significantly reduce greenhouse gas emissions and energy demand during vehicle operation. While ethanol-water blends reduce nitrogen oxides emissions, they increase specific fuel consumption, carbon monoxide, and greenhouse gas emissions compared to CNG and gasoline. Gasoline shows the lowest CO emissions and the best fuel consumption among liquid fuels tested.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Analytical
Qin Wang, Nuttada Panpradist, Jack Henry Kotnik, Richard C. Willson, Katerina Kourentzi, Zoe L. Chau, Joanne K. Liu, Barry R. Lutz, James J. Lai
Summary: Lateral flow assays (LFAs) are widely used for point-of-care or at-home tests, but their sensitivity is often limited. This study presents a simple agglutination system that enables antigen capture from larger sample volumes, leading to improved assay sensitivity. The proposed agglutination assay showed a 10-fold sensitivity enhancement for COVID-19 diagnosis from saliva.
ANALYTICA CHIMICA ACTA
(2023)
Article
Food Science & Technology
Hong Wang, Minqian Zhang, Chunyun Qu, Yongtao Fei, Jinglong Liang, Weidong Bai, Wenhong Zhao, Gengsheng Xiao, Gongliang Liu
Summary: By investigating the relationship between microorganisms and higher alcohol production, it was found that Saccharomyces cerevisiae and Rhizopus microsporus were the main microorganisms present during the fermentation of rice-flavor Baijiu. The higher abundance of R. microsporus in JM compared to CM may contribute to the higher levels of higher alcohols in JM.
Review
Biochemistry & Molecular Biology
Alonso Ornelas-Gonzalez, Margarita Ortiz-Martinez, Mirna Gonzalez-Gonzalez, Marco Rito-Palomares
Summary: Saliva has emerged as a non-invasive and valuable source of biomarker information, containing many of the biomarkers found in blood. While there are opportunities for improvement in terms of cost and complexity, enzymatic assays offer a cost-effective alternative for biomarker quantification in saliva samples. Critical analysis of technical elements for large-scale clinical applications of enzymatic methods is essential for overcoming current limitations.