Article
Plant Sciences
Claudia Giuliani, Martina Bottoni, Fabrizia Milani, Sefora Todero, Patrizia Berera, Filippo Maggi, Laura Santagostini, Gelsomina Fico
Summary: This study presents a novel perception of botanic gardens as complex factories of molecules that mediate plant-environment interactions and are useful for humans. The focus is on the medicinal plant heritage of the Ghirardi Botanic Garden in Italy. The study analyzed the morphology, phytochemistry, and bio-ecology of Myrtus communis L. subsp. communis, with a particular emphasis on the production of secondary metabolites. The results showed a high level of chemical variability in the essential oil composition, but identified three ubiquitous compounds across different conservation procedures and phenological stages.
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
Chemistry, Applied
Xuechao Song, Elena Canellas, Cristina Nerin
Summary: Headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HSSPME-GC-MS) was used to analyze volatile compounds in minced pork meat during storage, with the origin of aromatic hydrocarbons in pork being verified by a migration test. Principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA) were utilized to characterize the profile of volatile compounds and identify potential volatile markers associated with pork spoilage. Three compounds were identified as additional indicators for quality control of pork based on their importance in discrimination of pork with different storage times.
Article
Agricultural Engineering
Madhubalaji Chegukrishnamurthi, Ajam Shekh, Sarada Ravi, Sandeep Narayana Mudliar
Summary: In this study, the production of volatile organic compounds (VOCs) and their effect on growth were investigated by cultivating bacterial mixture (Rhizobium and Agrobacterium) and axenic Chlorella individually, in a mixed form, and through headspace connections. The results showed significant differences in VOCs produced by axenic Chlorella and Chlorella co-cultured with bacteria. The growth of co-cultured Chlorella was greatly enhanced, indicating the essential role of VOCs in growth and communication.
BIORESOURCE TECHNOLOGY
(2022)
Article
Automation & Control Systems
Samuele Pellacani, Caterina Durante, Silvia Celli, Manuel Mariani, Andrea Marchetti, Marina Cocchi, Lorenzo Strani
Summary: A SPME-Arrow GC-MS approach coupled with chemometrics was used to investigate the impact of different types of yeast and their leaving time on VOCs of bread samples. A deep learning approach, PARADISe, was used for untargeted analysis and identification of volatile compounds.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2023)
Article
Agriculture, Multidisciplinary
Elena Garicano Vilar, Maurice G. O'Sullivan, Joseph P. Kerry, Kieran N. Kilcawley
Summary: This study explored the aromatic profiles of various seaweeds and seaweed extracts, identifying over 100 volatile compounds. Brown and red seaweeds were found to have distinct sensory properties, with individual seaweeds exhibiting different volatiles and odorants. This information may aid in the development of products incorporating dried seaweeds/extracts that are more appealing to consumers.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
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
Food Science & Technology
Linjie Xi, Jing Zhang, Ruixiao Wu, Tian Wang, Wu Ding
Summary: Zhenba bacon, a type of Chinese traditional bacon, undergoes changes in aroma components during different stages of its production process, with an increase in esters and phenols observed. Lipid oxidation was found to play a crucial role in the formation of volatile flavor components of bacon.
Article
Plant Sciences
Mafalda Pinto, Cristiano Soares, Ruth Pereira, Jose Antonio Rodrigues, Fernanda Fidalgo, Ines Maria Valente
Summary: Aqueous extracts from Eucalyptus globulus leaves contain a wide variety of specialized metabolites with diverse biological activities. Previous studies have mainly focused on extracts from mature leaves, while the composition of extracts from young eucalyptus leaves is still unclear. There is also no consensus on whether fresh or dried leaves should be used for extraction to obtain the highest recovery of biologically active compounds.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Chemistry, Applied
Yun-Jiao Ma, Tao Zhou, Wei Jiang, Bei-Wei Zhu, Ming Du, Xian-Bing Xu
Summary: In this study, the DLPU-SPME method was proposed as a balanced extraction method for volatile and semi-volatile compounds. The key factors affecting extraction efficiency were confirmed to be pH, temperature, and salt concentration. Theoretical calculations showed that fs is a key factor indicating the extraction position, while the target analytes determined the effect of extraction position on the extracted amount.
Article
Biochemistry & Molecular Biology
Xinxin Gui, Xueping Feng, Minqiang Tang, Juanling Li
Summary: This study is important for determining the best drying method for partridge tea. The results showed that outdoor sun drying and hot-air drying had better preservation of the red color, while indoor shade drying and low-temperature freeze-drying favored the retention of the green color.
Article
Food Science & Technology
Chang-Cheng Zhao, Jong-Bang Eun
Summary: The study investigated the changes in volatile composition and chemical properties of fermented skate, hongeo at different stages of fermentation using headspace solid-phase microextraction and gas chromatography-mass spectrometry. The results showed significant increases in pH, ammonia nitrogen, total volatile base nitrogen, and trimethylamine nitrogen content during fermentation. A total of 208 volatile compounds were detected, with a dominant presence of amines, hydrocarbons, and alcohols in unfermented samples, while pyrazines, indoles, phenols, and sulfur compounds appeared from early to middle stages and increased until the end of fermentation. The study highlights the important role of microbial metabolic activity in the formation of unique flavors in hongeo products.
Article
Plant Sciences
Sara Vitalini, Marcello Iriti, Valentina Vaglia, Stefania Garzoli
Summary: The chemical composition of leaf essential oils from two species of Gymnosperms was studied using SPME-GC-MS technique. The results showed the presence of 51 identified volatile compounds in the liquid and vapor phases. Monoterpenes were the dominant components in both oils, with variations in qualitative and quantitative properties. The phytotoxic activity of the oils was demonstrated by their dose-dependent effects on seed germination and seedling development of target species. An exploratory survey on the residual presence of volatile compounds in the soil was also conducted.
Article
Chemistry, Applied
Shiqi Liao, Jinlin Han, Chunyan Jiang, Binbin Zhou, Zhenju Jiang, Jie Tang, Wenwu Ding, Zhenming Che, Hongbin Lin
Summary: With the use of a thermostatic fermenter, this study identified and analyzed the physicochemical factors and volatile metabolites of fermented broad beans. Through the application of HS-SPME-GC x GC-MS, the volatile compounds in fermented broad beans were detected, and metabolomics was used to explore the physicochemical characteristics and analyze possible metabolic mechanisms. A total of 184 different metabolites were detected, and they were annotated to various metabolic pathways of carbohydrate and amino acid metabolism. This study provides references for improving the quality of tank-fermented broad beans and upgrading the Pixian broad bean paste industry.
Article
Chemistry, Applied
Hongyu Zhou, Zhiwei Hu, Youming Liu, Shanbai Xiong
Summary: This study investigated the odor characteristics of fish noodles using different pretreatment methods and analysis techniques. The study identified volatile compounds that were significantly correlated with specific odor characteristics. The findings can contribute to the improvement of fish noodle quality and industrial production.
Article
Biochemical Research Methods
Mohamed Adel Ahmed, Alireza Ghiasvand, Joselito P. P. Quirino
Summary: Silica nanospheres (SNS) were grown on the inner walls of silica capillaries through a dynamic in situ nucleation process, resulting in highly porous and large accessible surface area substrate. The SNS were functionalized with various groups to develop robust and efficient chromatographic stationary phases, which were compared to conventional capillaries in terms of separation performance. The effects of different solvents, additives, and functional groups on the SNS were studied.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Kolsoum Dalvand, Alireza Ghiasvand, Sepideh Keshan-Balavandy, Feng Li, Michael Breadmore
Summary: This article describes a rapid, simple, and sensitive 3D printed microfluidic device integrated with smartphone-based on-chip detection for POCT quantification of urinary uric acid. The device includes two circular inputs connected to microliter-scale chambers, separated by an integrated porous membrane. Under optimal conditions, the device showed a linear calibration curve in the concentration range of 30-600 mg L-1, with a limit of detection of 10.5 mg L-1. The device was successfully used for the recovery and quantification of uric acid in urine.
AUSTRALIAN JOURNAL OF CHEMISTRY
(2023)
Review
Engineering, Chemical
Massoud Kaykhaii, Zhila Honarmandrad, Jacek Gebicki
Summary: Hydrogen production from biomass and organic wastes is an alternative, clean energy source. The presence of microplastics in biomass affects the yield of hydrogen, with both the number and size of plastic particles playing important roles. This Review examines the effects of various microplastics on biohydrogen production.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Correction
Pharmacology & Pharmacy
Mohammad Mehdi Ommati, Samira Sabouri, Hossein Niknahad, Abdollah Arjmand, Sepideh Alidaee, Sahra Mazloomi, Asma Najibi, Heresh Rezaei, Alireza Ghiasvand, Parinaz Ahmadi, Ahmad Nikoozadeh, Forouzan Khodaei, Narges Abdoli, Negar Azarpira, Reza Heidari
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY
(2023)
Review
Chemistry, Analytical
Liang Chen, Alireza Ghiasvand, Brett Paull
Summary: Affordable and accessible diagnostic tools in resource-limited settings are urgently needed to improve global public health. Paper-and thread-based microfluidics have gained significant attention in developing diagnostic devices due to their low-cost, accessibility, simplicity, and portability. This review focuses on fluid transport mechanisms, detection techniques, and applications in microfluidic thread-based analytical devices (mu TADs), discussing challenges and perspectives for further advances and improvements.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Sayyed Hossein Hashemi, Massoud Kaykhaii, Ahmad Jamali Keikha, Leila Raisi
Summary: This paper introduces a new microextraction method called deep eutectic solvent stir bar sorptive extraction (DES-SBSE) that uses a hydrophobic DES (hDES) as a coating for SBSE. Vitamin D-3 was efficiently extracted from different real samples using this technique and spectrophotometrically determined. The parameters affecting microextraction were studied and optimized using various methods. Under the optimal conditions, the method achieved a detection limit of 0.08 μg/L. The linear range of the method was 0.5 to 1000.0 μg/L for the analyte. The method showed good precision for intraday repeatability and interday reproducibility, with values better than 3.1 and 4.2, respectively. A single stir bar could be used for at least 50 successive extractions, and the batch-to-batch reproducibility of SB coated with hDES was 4.5%.
Review
Chemistry, Analytical
Mohamed Hemida, Alireza Ghiasvand, Mirek Macka, Vipul Gupta, Paul R. Haddad, Brett Paull
Summary: Liquid chromatography is a widely used analytical technique in separation science and chemical analysis, and there has been an increasing interest in miniaturizing this technique in recent years. This has been made possible by the development of new miniature and portable detection technologies, allowing for on-site and portable analyses. Significant advancements have been made in the miniaturization of liquid chromatography with photometric, electrochemical, and mass spectrometric detection, leading to the development of field-deployable and portable instruments for various applications. This review provides an overview of recent developments in the miniaturization of detection systems for portable liquid chromatographic systems, along with critical comments and expected future trends.
JOURNAL OF SEPARATION SCIENCE
(2023)
Article
Chemistry, Analytical
Sahar Chegeni, Kolsoum Nouriasl, Alireza Ghiasvand
Summary: A new adsorbent based on covalent organic frameworks (COFs) was synthesized and used for the needle trap device (NTD) microextraction. The synthesized adsorbent was characterized using various techniques. The designed microextraction system coupled with GC-FID was used for the analysis of PAHs in contaminated soil samples. RSM with BBD was utilized to optimize the extraction process variables. Under optimal conditions, the method showed good linearity, low detection limit, and acceptable RSD values.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Minoo Barzkar, Alireza Ghiasvand, Mehdi Safdarian
Summary: A new Pb (II) magnetic ion-imprinted polymer (Pb-MIIP) was developed for selective extraction of Pb (II) from water. The MIIP nanostructures were synthesized using iron oxide nanoparticles coated with itaconic acid as a magnetic core, with additional components including a functional monomer, a cross-linker, and an initiator. The synthesis process was confirmed through instrumental and microscopic methods. The Pb (II)-MIIP method exhibited a detection limit of 0.21 μg/L, high recovery (>90%), and low relative standard deviation (<4.9%). The synthesized MIIP showed reusability and successful application in extracting Pb (II) from tap water samples.
Article
Environmental Sciences
Reza Samsami, Neda Zalpour, Massoud Kaykhaii
Summary: The aim of this study was to evaluate the effectiveness of the combined peroxy-acid/O-3 treatment method for degrading polycyclic aromatic hydrocarbons (PAHs) in aged soil. The study compared the efficiency of slurry phase ozonation and peroxy-acid treatment methods. The results showed that the peroxy-acid/O-3 combined system was more effective, removing over 71% of total PAHs, while slurry phase ozonation and peroxy-acid treatment had lower efficiencies of 46% and 48%, respectively.
WATER AIR AND SOIL POLLUTION
(2023)
Review
Chemistry, Multidisciplinary
Zhila Honarmandrad, Massoud Kaykhaii, Jacek Gebicki
Summary: This paper provides an overview of recent research on the applications of metal-organic frameworks (MOFs) for removing microplastics (MPs) from aqueous environments. MOFs have unique properties that make them promising for this purpose, such as high surface area, renewability, chemical stability, and versatility. It has been shown that MOFs can effectively adsorb MPs from water, with removal rates ranging from 70-99.9%. However, the high cost and potential instability of MOFs in their powder form are major limitations.
Article
Chemistry, Analytical
Kolsoum Nouriasl, Alireza Ghiasvand
Summary: A Cu-MOF/COF hybrid material was synthesized and used for the headspace solid-phase microextraction (HS-SPME) of PAHs in soil samples. The optimized method showed low detection limits and good linearity, demonstrating the effectiveness and reliability of the Cu-MOF/COF hybrid sorbent for sampling ultratrace PAHs in solid samples with complex matrices.
Review
Computer Science, Interdisciplinary Applications
Melika Tasan, Zahrasadat Ghorbaninasab, Saeid Haji-Aghajany, Alireza Ghiasvand
Summary: This study explores the utilization of the Long Short-Term Memory (LSTM) method and GNSS observations for time series prediction of land subsidence. The results demonstrate the crucial role of wet tropospheric data in improving prediction accuracy.
EARTH SCIENCE INFORMATICS
(2023)
Article
Chemistry, Analytical
Samira Koonani, Alireza Ghiasvand
Summary: This study developed a novel adsorbent, Zn-MOF/COF, by combining Zn-based MOF and melamine-based COF. The resulting Zn-MOF/COF sorbent exhibited lower cost and higher extraction efficiency compared to commercial and homemade adsorbents. It was successfully employed for the extraction and enrichment of PAHs in contaminated soil samples.
Review
Chemistry, Analytical
Vahid Jalili, Abdullah Barkhordari, Brett Paull, Alireza Ghiasvand
Summary: PFAS are a group of fluorocarbon compounds with wide-ranging applications, but their persistence and toxic properties make them a concern in the environment. Their strong C-F bonds make it difficult for chemical or biological mechanisms to break them down. Therefore, sensitive and selective analytical methods are needed to detect and trace PFAS in biological and environmental matrices.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
