Article
Food Science & Technology
Shaoyun Han, Ke He, Jing An, Mengmeng Qiao, Runhui Ke, Xiao Wang, Yang Xu, Xiuying Tang
Summary: This study identifies the primary volatile organic chemicals (VOCs) in the secretions of the red flour beetle (T. castaneum) using headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). Seven specific VOCs unique to T. castaneum are found and can be used as volatile markers to identify its presence in grain storage facilities.
Article
Environmental Sciences
Mohammed Mousa Alshehri, Mohamed Ali Ouladsmane, Taieb Ali Aouak, Zeid Abdullah ALOthman, Ahmed Yacine Badjah Hadj Ahmed
Summary: Phthalates are widely used synthetic chemicals mainly used as plasticizers. This study developed a method for concentration of phthalate residues leached from PET bottles and found that several bottled water brands contain different concentrations of phthalates, with DnBP being the most abundant.
Article
Environmental Sciences
Sara C. Cunha, Ricardo Ferreira, Isa Marmelo, Luis R. Vieira, Patricia Anacleto, Ana Maulvault, Antonio Marques
Summary: This study evaluated the levels of endocrine disruptor chemicals (EDCs) in water and sediment samples from the estuaries of Tagus and Douro Rivers. The results showed that pesticide residues and bisphenols were more contaminated in the Tagus estuary, while polycyclic musks and UV-filters had lower levels of contamination in both estuaries.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Biochemical Research Methods
Juan Aspromonte, Steven Mascrez, Damien Eggermont, Giorgia Purcaro
Summary: This review focuses on the applications of solid-phase microextraction and comprehensive multidimensional gas chromatography in food analysis, emphasizing the importance of proper data treatment.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Food Science & Technology
Yi-Cai Zhang, Qin-Bao Lin, Huai-Ning Zhong, Ying Zeng
Summary: Headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS) was used to analyze volatile flavor compounds of yogurt packaged in carton. Volatile flavor compounds of off-flavor yogurt were compared with that of fresh milk, unpackaged yogurt, non-off-flavor yogurt, and its packaging materials. The migration assay combined with VIP values showed that ethanol and ethyl acetate can be considered as the other indicators for the monitoring of yogurt quality.
FOOD PACKAGING AND SHELF LIFE
(2022)
Article
Food Science & Technology
Zhenzhao Li, Minh Ha, Damian Frank, Peter McGilchrist, Robyn Dorothy Warner
Summary: The study found that the concentration of volatiles with high odor impact is higher in dry aged beef, and certain odor impact compounds decrease significantly with ageing time. Consumer preference for 35-day dry aged beef is associated with higher concentrations of pleasant odor-active volatiles.
Article
Biochemistry & Molecular Biology
Joanna Bogusiewicz, Katarzyna Burlikowska, Karol Jaroch, Paulina Zofia Gorynska, Krzysztof Gorynski, Marcin Birski, Jacek Furtak, Dariusz Paczkowski, Marek Harat, Barbara Bojko
Summary: Alterations in the carnitine shuttle system may indicate the presence of cancer. In-depth analyses of this pathway in different malignant tumors could be crucial for cancer detection and treatment.
Article
Chemistry, Multidisciplinary
Colton Myers, Jason S. Herrington, Paul Hamrah, Kelsey Anderson
Summary: The study focused on analyzing terpenes in cannabis products using accelerated solvent extraction and surrogate matrix matching, comparing traditional and modern sample introduction techniques. The Liquid Injection-Syringe method was found to be the most straightforward and robust approach for analyzing terpenes with high precision and accuracy.
FRONTIERS IN CHEMISTRY
(2021)
Article
Biology
Jui-Chia Lee, Kai-Min Yang, Chin-Sheng Wu, Lee-Ping Chu, Wei-Miao Jiang, Hsin-Chun Chen
Summary: This study used HS-SPME combined with gas chromatography and gas chromatography-mass spectrometry to analyze the difference in aroma components among four varieties of fragrant rice. The results showed that Nonanal was the main component in all varieties, with TK4 containing high levels of hydrocarbon components and TN71, KH147, and TC194 containing mainly aldehydes. After storage, the total volatile component content of the fragrant rice samples decreased, with Nonanal content showing the most significant reduction.
Article
Chemistry, Analytical
Sara Ramos, Vera Homem, Lucia Santos
Summary: A simple method for analyzing synthetic musk compounds and ultraviolet filters in soil samples was developed and validated for linearity, detection limits, precision, and accuracy. The methodology showed good applicability in detecting these compounds in all types of soil samples.
JOURNAL OF SEPARATION SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Keita Saito, Yoshiyuki Tokorodani, Chihiro Sakamoto, Hiroyuki Kataoka
Summary: A non-invasive analytical method for measuring body odor components by headspace solid-phase microextraction and gas chromatography-mass spectrometry was developed. The method successfully analyzed 2-nonenal in skin emissions and secretions and was applied to the study of body odor changes.
Article
Horticulture
Wenqin Bao, Yongbao Shen
Summary: This study used HS-SPME and GC-MS combined with chemometrics to analyze the dynamic variations of scent components of three Tilia species at different flowering stages. A total of 47 aroma compounds were identified, and several crucial aroma components were discovered. Evaluation of aroma similarity rates revealed a close phylogenetic relationship between Tilia cordata and Tilia tomentosa.
Article
Materials Science, Paper & Wood
Minjay Chung, Sensung Cheng, Chunya Lin, Shangtzen Chang
Summary: This study focused on the volatile aromatic constituents extracted from underground and aboveground Bambusa oldhamii shoots using solid-phase microextraction. The analysis revealed distinct volatile compounds in the two types of shoots, providing insight into the aromatic characteristics of B. oldhamii shoots.
Article
Food Science & Technology
Kaiqi Weng, Lina Song, Qiang Bao, Zhengfeng Cao, Yu Zhang, Yang Zhang, Guohong Chen, Qi Xu
Summary: This study characterized the aroma of raw duck meat and provided the basic mechanism of the formation of key volatile compounds. The results showed that hexanal, nonanal, octanal, heptanal, and 2-pentylfuran were abundantly present in duck meat regardless of the breed. Slow-growing duck meat had more nonanal and octanal, resulting in a fatty and fruity aroma, while fast-growing duck meat had higher octenol, resulting in a mushroom note. The lower carnitine content in slow-growing duck meat may promote lipid deposition to produce more octanal and nonanal, while higher sugar and amino acid contents led to a meaty aroma. Additionally, more trimethylamine N-oxide may generate a fishy note in slow-growing duck meat.
Article
Biochemical Research Methods
Christine F. Thomas, Ellen Zeh, Selina Doerfel, Yanyan Zhang, Joerg Hinrichs
Summary: A novel method coupling HS-SPME with GC-IMS was developed for analyzing dynamic aroma release from complex food matrices, showing promising results in detecting and quantifying thirteen character impact compounds. The method demonstrated advantages such as adjustable IMS sample inlet temperature, broad linear calibration range, reasonable detection and quantitation limits, while also revealing limitations such as short HS-SPME extraction time.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Correction
Biochemical Research Methods
Yong Wang, Suhua Yu, Rui Li, Jing Wan, Yuheng Wang, Zongli Huo, Chunyong Wu, Li Mi, Songqin Liu
JOURNAL OF CHROMATOGRAPHY A
(2024)
Review
Biochemical Research Methods
Israel D. Souza, Maria Eugenia C. Queiroz
Summary: Organic-silica hybrid monolithic materials have gained significant attention in separation science and sample preparation due to their unique properties. This review summarizes the characteristics, current status, and recent developments of these materials, as well as discusses synthesis methods, characterization techniques, and strategies for improving extraction efficiency in various applications.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Bhagwat Upreti, Bhanu Prasad Vempatapu, Jagdish Kumar, Pankaj K. Kanaujia
Summary: Lubricating oils are essential for the effective performance of internal combustion engines. This study presents a new HPLC method for determining additives in finished lubricating oils and polar substances in used engine oils.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zongqing Huang, Haoju Hua, Xiuzhen Du, Zipeng Zhen, Wei Zhao, Jun Feng, Ji-an Li
Summary: This study successfully isolated VHHs against the SUMO protein for the first time using biopanning of an immune camelid nanobody library. The VHHs were coupled to agarose resins to form affinity chromatography resins, allowing for one-step purification of various SUMO fusions.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Xueting Qiu, Xuben Hou, Yue Yang, Hao Fang, Fei Cui, Xinying Yang
Summary: In this study, a new method based on electrophoretically mediated microanalysis was developed for the investigation of PTPRO enzymatic activity. The method was successfully used to determine the kinetics of PTPRO and the inhibitory concentration of PTPRO inhibitors. The method exhibited improved accuracy and reduced consumption compared to traditional methods.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Feifei Luo, Mengmeng Hao, Lei Zhang, Yangguo Xie, Wei Hou, Hongya Wang, Zhongli Zhang
Summary: In this study, a comprehensive screening and structure elucidation of 23 nonvolatile organic compounds (NVOCs) in two antibody drugs was conducted. Seven previously unreported compounds were identified. A quantitative method with high sensitivity, accuracy, and precision was developed for evaluating the safety of NVOCs in drug products.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zuzana Vosahlova, Kveta Kalfkova, Martin Gilar, Jakub Szymarek, Maria Mazurkiewicz-Beldzinska, Sylwia Studzi
Summary: A hydrophilic interaction liquid chromatography method was developed for the separation and identification of oligonucleotide impurities and metabolites, and successfully applied to the analysis of serum samples from Spinraza-treated patients.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Aswanidevi Kongasseri, Thirumalai Madhesan, Sangeetha Krishna Kumar, Sushmitha Pedugu Sivaraman, Suchashrita Mitra, Pitchaiah Kancharlapalli Chinaraga, C. V. S. Brahmmananda Rao, Sivaraman Nagarajan, Prabhakaran Deivasigamani, Akhila Maheswari Mohan
Summary: This study focuses on the sequential separation of trivalent lanthanides using modified C-18 silica-packed supports and reversed-phase HPLC technique. By tuning the column modifiers and separation parameters, the researchers achieved systematic separation of Ln(3+). The results showed that the choice of column modifiers and fine-tuning of the modification procedure were crucial for achieving excellent separation.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Raquel Perez-Robles, Szabolcs Fekete, Robert Kormany, Natalia Navas, Davy Guillarme
Summary: There is a mismatch between the sample diluent and the mobile phase in HILIC analysis, leading to analyte breakthrough and peak distortion. Adding a weak solvent for pre-injection can effectively prevent these issues and improve sensitivity.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Oleg Pokrovskiy, Irina Rostovschikova, Konstantin Ustinovich, Ilya Voronov, Dmitry Kosyakov
Summary: A chromatography-like propagation of water through the material bed was observed during supercritical fluid extraction of aroma plants with high moisture content, which could be significant for modeling the kinetics of supercritical fluid extraction of non-volatile compounds.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Yasar Kemal Recepoglu, Ozguer Arar, Asli Yuksel
Summary: Biosorption using phosphorylated hazelnut shell waste (FHS) is a promising method for lithium removal and recovery. This study investigated the performance of a continuous-flow packed-bed column system using FHS for ultra-low level lithium removal. The results showed that the lihium biosorption capacity of the FHS column was unaffected by the bed height, but decreased with increasing flow rate.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Jian Sun, Zheheng Zheng, Zixiao Jia, Jiabin Wang, Xucong Lin
Summary: In this study, an ionic covalent organic framework (iCOF) surface grafting monolithic sorbent was prepared for in-tube solid-phase microextraction (SPME) of aristolochic acids (AAs) in various samples. The density of quaternary ammonium ions in the iCOF was modulated for enhanced adsorption of AAs. The iCOF surface grafting monolithic sorbent was confirmed by different means. Several operating conditions were optimized to develop the online in-tube SPME-HPLC method, which showed good linearity, low limits of detection, and high recoveries for AAs in serum samples. This study presents a feasible approach for the application of COF-based monolithic sorbents in sample preparation.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zeng Wen, Ruihan Peng, Die Gao, Jing Lin, Jia Zeng, Zhou Li, Famin Ke, Zhining Xia, Dandan Wang
Summary: A chitosan-alginate sponge with multiple cross-linking networks was developed for adsorption and enrichment of anionic dyes from food samples. The sponge showed better three-dimensional network structure, mechanical behavior, and stability compared to pure chitosan and alginate sponges. The adsorption performance and selectivity of the sponge were systematically studied, and it maintained high adsorption capacity and selectivity for anionic dyes. The sponge also showed satisfactory reusability and was successfully combined with high-performance liquid chromatography for the enrichment and detection of anionic dyes in candy and cocktail samples.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Hairong Zhang, Xiaojuan Jiang, Dandan Zhang, Yuexin Yang, Qiang Xie, Caisheng Wu
Summary: Analysis of in vivo exposure to traditional Chinese medicine using mass spectrometry is helpful for identifying effective ingredients and developing new drugs. This study focused on Forsythia suspensa (Lian Qiao) and used metabolomics technology to explore its in vivo exposure. By comparing the differences before and after administration, a complete set of nontargeted analysis strategies for TCM exposure was established. The study identified 393 Lian Qiao-related chemical components in mice after administration, including prototypes and metabolites. This study provides a reference for research on the active ingredients of Lian Qiao in vivo.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Oscar Castejon-Musulen, Ricardo Lopez, Ignacio Ontan, Vicente Ferreira
Summary: A quantitative analytical method was developed and validated in this study to determine the concentrations of 81 aroma-relevant wine volatiles. The method utilizes stir bar sorptive extraction and multidimensional gas chromatography with flame ionization detector or mass spectrometer. The method demonstrated good linearity, reproducibility, and recovery, and was successfully applied to analyze 20 wine samples.
JOURNAL OF CHROMATOGRAPHY A
(2024)