Article
Plant Sciences
Xiang Zuo, Yanqian Wang, Hongyou Zhao, Guang Li, Yanfang Wang, Ge Li, Lixia Zhang, Weiwei Gao
Summary: Amomum villosum is capable of releasing allelochemicals that affect the growth of other plant species and the diversity and community structure of soil microorganisms.
Article
Plant Sciences
Haidy A. Gad, Nilufar Z. Mamadalieva, Stefan Bohmdorfer, Thomas Rosenau, Gokhan Zengin, Rano Z. Mamadalieva, Nawal M. Al Musayeib, Mohamed L. Ashour
Summary: The volatile components of six Astragalus species were analyzed using GC-MS, revealing potential antioxidant and enzyme inhibitory activities, making them promising natural sources for medicinal purposes in treating various diseases.
Article
Plant Sciences
Haidy A. Gad, Elbek A. Mukhammadiev, Gokhan Zengen, Nawal M. Al Musayeib, Hidayat Hussain, Ismail Bin Ware, Mohamed L. Ashour, Nilufar Z. Mamadalieva
Summary: The chemical composition and antioxidant and enzyme inhibitory activity of the essential oils from Stachys byzantina, S. hissarica, and S. betoniciflora in Uzbekistan were analyzed.
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
Biochemistry & Molecular Biology
Tiago J. T. de Souza, Sergio A. L. Bordignon, Miriam A. Apel, Amelia T. Henriques
Summary: The study characterized the volatile oils obtained from species in the Disynaphiinae subtribe of Eupatorieae in southern Brazil, showing that the oils were mainly composed of terpene compounds. Different samples within the subtribe exhibited variations in chemical composition, with some samples containing higher proportions of monoterpenes or oxygenated sesquiterpenes.
Article
Food Science & Technology
Guirong Zhang, Li Li, Jun Liu, Ji Cai, Junjie Fu, Na Li, Hong Cao, Hongwei Xu, Ying Zhang, Rong Cao
Summary: This study identified the characteristic components of Sichuan Sun vinegar and discovered various physiologically active substances. These findings provide information for the purification and strengthening of beneficial substances in vinegar.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Food Science & Technology
Nina Siskovic, Lidija Strojnik, Tine Grebenc, Rajko Vidrih, Nives Ogrinc
Summary: This study aimed to determine whether freeze-dried truffles of different species and regional origins can be grouped based on their VOC profiles. The results showed that VOC profiles of freeze-dried truffles are significantly altered compared to fresh truffles, but species-specific VOC transformations were observed during freeze-drying. Multivariate discriminant analysis successfully distinguished between different truffle species, supporting its applicability in food fraud detection. Samples from different truffle hunting locations also showed potential differences in VOC profiles indicating regional origin, requiring further investigation for improved cross-validation results.
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
Food Science & Technology
Xiaobei Li, Yanmei Zhang, E. Hengchao, Xiangwei He, Jianying Li, Xiaoyan Zhao, Changyan Zhou
Summary: This study aimed to investigate the volatile profiles of M. sextelata under three dehydration methods: freeze, hot air, and natural air drying. It was found that comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry was the best choice to differentiate the volatile profiles. Freeze-dried samples had the most abundant volatile compounds, while hot air-drying promoted the production of compounds with roasted flavor and natural air-drying resulted in unpleasant acids releasing.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Biochemistry & Molecular Biology
Ruoqiao Chen, Xiaoshuang Wang, Hongting Xu, Ruizhi Zhao, Qiaohong Hu
Summary: Volatile oils from different species and habitats of Bupleuri radix have varying compositions and potential medicinal uses. The content and composition of the volatile oils are influenced by the species and habitats of Bupleuri radix. Bupleurum scorzonerifolium Willd. shows the highest content of volatile oil and the best antipyretic activity.
CHEMISTRY & BIODIVERSITY
(2022)
Article
Plant Sciences
Valerija Dunkic, Marija Nazlic, Mirko Ruscic, Elma Vuko, Karla Akrap, Snjezana Topic, Milenko Milovic, Nenad Vuletic, Jasna Puizina, Renata Jurisic Grubesic, Sinisa Srecec, Dario Kremer
Summary: The study isolated free volatile compounds from 21 Croatian Veronica species through two methods, revealing unique chemical compositions in species from different habitats. These findings enrich our understanding of the chemical compositions of these plants and lay the foundation for further exploration of the biological potential of their specialized metabolites.
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
Plant Sciences
Noha Khalil, Haidy A. Gad, Nawal M. Al Musayeib, Mokhtar Bishr, Mohamed L. Ashour
Summary: The present study aimed to identify glucosinolates (GSLs) and volatile compounds in six Brassicaceae seeds cultivated in Egypt. The results showed variations in GSL content and volatile compounds among different seeds, which were found to have different antioxidant capacities.
Article
Instruments & Instrumentation
M. Sargent, H. Goenaga-Infante, K. Inagaki, L. Ma, J. Meija, A. Pramann, O. Rienitz, R. Sturgeon, J. Vogl, J. Wang, L. Yang
Article
Chemistry, Analytical
Patricia Grinberg, Lucia D'Ulivo, Kenny Nadeau, Indu Gedara Pihillagawa, Ovi Mihai, Kelly L. LeBlanc, Lu Yang, Juris Meija, Zoltan Mester
ACCREDITATION AND QUALITY ASSURANCE
(2020)
Editorial Material
Instruments & Instrumentation
Patricia Grinberg, Zoltan Mester, Patricia Gatti, Osvaldo Acosta, Mabel Puelles, Mabel Delgado, Rodrigo Caciano de Sena, Marcelo Dominguez de Almeida, Marcia Silva da Rocha, Soraya Sandoval
Article
Chemistry, Multidisciplinary
Patricia Grinberg, Bradley A. J. Methven, Katarzyna Swider, Zoltan Mester
Summary: A method for rapid assessment of metallic impurities in carbon nanotubes using GDMS has been developed, allowing measurement of 41 elemental impurities in CNTs with high throughput and real-time monitoring capabilities. This approach enables accurate evaluation of toxicity and environmental impact of CNTs by assessing all metallic impurities present.
Article
Chemistry, Analytical
Stanislav Musil, Jaromir Vyhnanovsky, Ralph E. Sturgeon
Summary: An extremely sensitive methodology for Ru determination was developed by coupling PVG with ICPMS, achieving high efficiency with the presence of Co2+ and Cd2+ sensitizers. The method showed good repeatability and reproducibility for various water samples.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Enea Pagliano, Jaromir Vyhnanovsky, Stanislav Musil, Richard M. de Oliveira, Sandor T. Forczek, Ralph E. Sturgeon
Summary: The volatile synthetic products of photochemical vapor generation of Os(iv) and W(vi) have been confirmed by GC-MS. Osmium tetroxide and tungsten hexacarbonyl were identified as the species generated in different oxidizing and reducing media. However, the PVG products of Os and Ru generated in reducing media could not be determined using GC-MS and require other more direct methods for analysis.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Stanislav Musil, Eva Jenikova, Jaromir Vyhnanovsky, Ralph E. Sturgeon
Summary: In this study, a highly efficient photochemical vapor generation (PVG) method was described for generating a volatile species of Ir for subsequent detection. PVG efficiency was optimized by adjusting irradiation time, pH of the reaction medium, and the presence of metal sensitizers. The developed methodology showed high repeatability and low limits of detection for Ir analysis by ICPMS. Interference from various substances was investigated, and the method showed excellent tolerance towards chloride. The practical application of the method was demonstrated by direct analysis of water samples with high spike recovery.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Richard M. de Oliveira, Daniel L. G. Borges, Patricia Grinberg, Ralph E. Sturgeon
Summary: A novel high yield photochemical vapor generation (PVG) method for Os was developed, achieving a method detection limit of 0.16 pg mL(-1) and a precision of 4% (RSD) at 10 ng mL(-1). The product identity has not been confirmed but is suspected to be a carbonyl or alkyl-substituted carbonyl based on the reaction conditions and volatility difference from OsO4.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Biology
Eder Jose dos Santos, Mateus Sabatke, Amanda Beatriz Herrmann, Ralph Edward Sturgeon
Summary: Six sample preparation procedures were assessed for selective extraction of Cr(VI) from commercial chromium oxide green pigments for determination by visible spectrophotometry. Procedure (VI) showed high recoveries for soluble and insoluble Cr(VI) species, enabling successful calibration within the concentration range of 0.05-1.50 μg L-1.
BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Richard M. de Oliveira, Daniel L. G. Borges, Patricia Grinberg, Zoltan Mester, Ralph E. Sturgeon
Summary: The presence of Cu2+ significantly enhances the photochemical vapor generation (PVG) efficiencies of both Br- and BrO3- species, with Cu2+ serving as a photocatalyst in both PVG systems. Efficient synthesis of CH3Br is achieved through a flow-through photochemical reactor, while high PVG efficiency for Br- is achieved using a germicidal lamp.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Ralph E. Sturgeon, Enea Pagliano
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2020)
Article
Chemistry, Analytical
Daniel B. Alcantara, Ronaldo F. Nascimento, Gisele S. Lopes, Patricia Grinberg
ANALYTICAL METHODS
(2020)
Review
Chemistry, Analytical
Daniele Leonori, Ralph E. Sturgeon
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2019)
Article
Chemistry, Analytical
Michel Rocha Baqueta, Augusto Cesar Costa-Santos, Ana Paula Rebellato, Gisele Marcondes Luz, Juliana Azevedo Lima Pallone, Federico Marini, Alexsandro Lara Teixeira, Douglas N. Rutledge, Patricia Valderrama
Summary: This study reports the essential element composition of new Brazilian Canephora coffees and applies chemometric tools for analysis. The results demonstrate the suitability of this method for origin and species discrimination based on the inorganic fraction of coffee.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Mengjie Li, Jiapeng Wang, You Zhou, Yang Chen, Lingying Xia
Summary: A novel photoelectrochemical biosensor based on gold nanoparticles and specific structures was developed for highly sensitive detection of mercury ion. The multiple sandwich structures hindered electron supply and light harvesting, resulting in a weakened PEC signal, while the specific structures extinguished the PEC signal, enabling quantitative detection of Hg2+. The sensor exhibited high selectivity and stability, with potential applications in environmental detection, biological analysis, and medical research.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Mohamed A. Korany, Rasha M. Youssef, Marwa A. A. Ragab, Mostafa A. Afify
Summary: A stability-indicating fit-for-purpose method was developed for the determination of HC, TL, and PS in syrup dosage form. The method successfully separated CL from THY and quantified the analytes using HPLC-DAD. The robustness of the method was assessed through statistical analysis and self-validation.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Lingling Lin, Minyu Li, Ping Li, Chenqing Ye, Huanglong Zhuang, Shaohuang Weng, Feng Chen
Summary: This study developed a highly sensitive and selective electrochemical sensor for simultaneous detection of dopamine and uric acid. The sensor exhibited excellent anti-interference and stability, and could accurately measure dopamine and uric acid in human urine samples.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Peifang Chen, Caiyun Jiang, Zhouping Wang, Hong-zhen Lian, Xiaoyuan Ma
Summary: In this study, a high-performance SERS-active aptasensor was successfully developed for the quantitative analysis of AFB1 in cereal grains, which is of great significance in the field of food safety.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
E. Abas, C. Marina-Montes, C. Perez-Marin, J. Puimedon, J. Anzano
Summary: This study conducted a comprehensive measurement of natural and anthropogenic radionuclides in soil, water, and air in different locations around Deception Island in Antarctica. The results revealed significant levels of 210Pb and anthropogenic 137Cs in soil samples near old human settlements and facilities, as well as detectable levels of 137Cs and 60Co in water samples from old hunting areas. The findings also suggested potential resuspension processes based on higher-than-expected air quality results.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Joao Franciso Allochio, Nayara A. dos Santos, Nathalia dos S. Conceicao, Clara S. D. Baptista, Keyller B. Borges, Valdemar Lacerda Jr, Wanderson Roma
Summary: This study developed a fiber spray ionization mass spectrometry (FSI-MS) method, which shows great potential in detecting illicit drugs. Compared with paper spray ionization mass spectrometry (PSI-MS), FSI-MS demonstrates higher sensitivity in COC detection.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Dina A. Ahmed, Ola G. Hussein, Mamdouh R. Rezk, Mohamed Abdelkawy, Yasmin Rostom
Summary: The main goal of this study was to develop two green chromatographic techniques, HPLC and TLC, for the determination of alcaftadine (ALF) in pharmaceutical formulation and biological samples. The developed HPLC technique showed high efficiency and minimal environmental impact, successfully identifying ALF in the presence of its degradate. The TLC method provided a stability indicating study for ALF and was determined to be safe, green, and eco-friendly.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Abdullah Taner Bisgin
Summary: A green, speedy, and handy method for separation and determination of four commonly used food colorants was established using vortex assisted sequential-simultaneous liquid phase micro-extraction (VA-SS-LPME). The method does not require any instrumental chromatographic techniques. The procedure includes sequential separation steps using different extractants and simultaneous UV-vis spectrophotometric determination steps. The method is environmentally friendly and applicable for determination of colorants in food and pharmaceuticals.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Yifan Zhang, Tong Zhang, Wenjing Ba, Li Liu, Yuan Rao, Xiaodan Zhang, Hanhan Zhang, Xiu Jin
Summary: This paper proposes a novel spectral transfer modelling method based on neural network architecture searching for the asymptomatic prediction of Akizuki pear cork spot disorder. The experiments show that the model by this method is more effective, achieving an accuracy of 82.61%.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Krzysztof Greda, Maja Welna, Anna Szymczycha-Madeja, Pawel Pohl
Summary: For the first time, a dispersive micro-solid phase extraction (D-mu SPE) based on graphene oxide was used for the ultrasensitive determination of Cd. With this method, Cd can be efficiently extracted from a mixture of alkali and alkaline earth metals without the need for an elution step. The combination of D-mu SPE and SAGD OES significantly reduces matrix effects and improves the tolerance of Cd to alkali metals. The method shows simplicity in the measurement system and the commercially available nanosorbent used.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
P. K. Fathima Anjila, G. R. Tharani, Anand Sundaramoorthy, Venkat Kumar Shanmugam, Karthikeyan Subramani, Shanmugavel Chinnathambi, Ganesh N. Pandian, Vimala Raghavan, Andrews Nirmala Grace, Singaravelu Ganesan, Mangaiyarkarasi Rajendiran
Summary: This work proposes a rapid and sensitive spectroscopic method for detecting melamine in food products using rare-earth Terbium-doped Graphene Quantum Dots (Tb-GQDs) synthesized by microwave and simple chemical conjugation methods. The synthesized Tb-GQDs show a spherical shape with a size of approximately 6 nm and a quantum yield of 52%. The maximum detection limit for melamine concentration in milk and milk products is found to be 0.31 μM. The dual emitting Tb-GQDs provide a sensitive and effective platform for real-time detection of melamine in food samples, particularly in milk, and show promising potential in the food industry.
MICROCHEMICAL JOURNAL
(2024)
Review
Chemistry, Analytical
Piyush Dey, Mandeep Kaur, Akhil Khajuria, Dilmeet Kaur, Manpreet Singh, Hema Kumari Alajangi, Neha Singla, Gurpal Singh, Ravi Pratap Barnwal
Summary: Environmental issues, such as the uncontrolled release of dangerous pollutants, have significant impacts on human health. Traditional methods for detecting pollutants require specialized personnel and equipment, but nanotechnology has improved the performance of biosensors. This article discusses the use of nanotechnology in pollutant detection and the associated techniques.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Sa Dong, Qiuyun Shi, Lingjun Guan, Yulong Wang, Pengyan Liu, Cunzheng Zhang, Jianguo Feng
Summary: In this study, a highly sensitive indirect competitive chemiluminescence enzyme immunoassay (icCLEIA) method was developed for the determination of sodium pentachlorophenolate (PCP-Na) and its metabolite pentachlorophenol (PCP). The method showed high specificity and affinity with a detection limit of 0.0032 ng/mL for PCP-Na and 0.0192 ng/mL for PCP. The method had no cross reaction with other chlorophenols compounds except for PCP. The average recoveries in chicken, pork and fish samples were 81.3-105.8% with low coefficient of variation (CV).
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Palaniappan Ilayaraja, Murugan Manivannan, Paramasivam Parthiban
Summary: Nirmatrelvir, an antiviral drug used for the treatment of COVID-19, has been recommended by the World Health Organization. We developed an optimized analytical method for the quantification of Nirmatrelvir and its products, with high sensitivity and a wide linear range. The method also meets the requirements for greenness evaluation.
MICROCHEMICAL JOURNAL
(2024)
