Results 61 to 70 of about 25,474 (251)

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt, Adriana Arigò, Giorgio Famiglini, Pierangela Palma, Achille Cappiello   +4 more
wiley   +1 more source

Characterization of Volatile and Flavonoid Composition of Different Cuts of Dried Onion (Allium cepa L.) by HS-SPME-GC-MS, HS-SPME-GC×GC-TOF and HPLC-DAD

Molecules, 2020
Onion is widely used worldwide in various forms for both food and medicinal applications, thanks to its high content of phytonutrients, such as flavonoids and volatile sulfur compounds.
Lorenzo Cecchi, Francesca Ieri, Pamela Vignolini, Nadia Mulinacci, Annalisa Romani   +4 more
doaj   +1 more source

Characterization of craft beer through flavour component analysis by GC-MS and multivariate statistical tools [PDF]

, 2018
Beer is a rather popular drink and represents the most widely consumed alcoholic beverage in the world.The present research aims at characterizing the flavour profile of lager pilsner, the category of low fermentation beers most common in Europe.
Boccacci Mariani Maurizio, Giannetti Vanessa, TORRELLI, PAOLA   +2 more
core  

Progress in Surface‐Enhanced Raman Scattering‐Based Volatile Organic Compounds Detection: Materials, Application, and Prospects

Rare Metals, EarlyView.
ABSTRACT The detection of volatile organic compounds (VOCs) holds significant implications in environmental monitoring and disease diagnosis. Traditional gas detection technologies are constrained by complex operation and high cost, thereby failing to satisfy real‐time detection demands.
Yuening Wang, Lin Qiu, Jian Yu, Wen Ma, Xiaoyu Song, Mingjian Zhang, Yujiao Xie, Aochi Liu, Li Sun, Xiangyu Meng, Jie Lin, Xiaotian Wang   +11 more
wiley   +1 more source

The scent of death: A case study for volatile markers of decomposition on a concrete floor

Journal of Forensic Sciences, EarlyView.
Abstract Volatile organic compounds (VOCs) released during human decomposition are chemically diverse and can provide forensic evidence indicating the prior presence of a corpse. In July 2023, the Michigan City Police Department received a report from an individual claiming to have murdered his roommate and stored the body in a basement cellar for 57 ...
Alexis Hecker, Anna Painter, John Goodpaster   +2 more
wiley   +1 more source

Development of a Direct Headspace Collection Method from Arabidopsis Seedlings Using HS-SPME-GC-TOF-MS Analysis

Metabolites, 2013
Plants produce various volatile organic compounds (VOCs), which are thought to be a crucial factor in their interactions with harmful insects, plants and animals. Composition of VOCs may differ when plants are grown under different nutrient conditions, i.
Kazuki Saito, Makoto Kobayashi, Miyako Kusano, Yumiko Iizuka, Atsushi Fukushima   +4 more
doaj   +1 more source

Analysis of PCBs in soils and sediments by microwave-assisted extraction, headspace-SPME and high resolution gas chromatography with ion-trap tandem mass spectrometry [PDF]

, 2006
A procedure for the determination of seven indicator PCBs in soils and sediments using microwave-assisted extraction (MAE) and headspace solid-phase microextraction (HS-SPME) prior to GC-MS/MS is described.
Alves, Arminda, Herbert, Paulo, Morais, Simone, Paíga, Paula, Santos, Lúcia   +4 more
core   +1 more source

An Easy Method to Sample Headspace Pheromones in the Field

Ethology, EarlyView.
Females of the orb‐web spider Argiope bruennichi produces a pheromone to attract males for mating. Most of our knowledge about the pheromone and its strategical use by the females is known from the laboratory. While we have confidence in the validity of these results, we wanted to make sure and measure pheromones in the field.
Zoe Dössel, Katharina Weiss, Jutta M. Schneider   +2 more
wiley   +1 more source

Metabolomic and Single‐Cell Transcriptomic Analyses Shed Light on Secondary Metabolite Profiling and Potential Developmental Dynamics of Glandular Trichomes in Artemisia argyi

Plant Biotechnology Journal, EarlyView.
ABSTRACT Plant glandular trichomes (GTs) are characterised by their ability to synthesise and store abundant secondary metabolites of significant biological importance. The medicinal plant Artemisia argyi exhibits a dense covering of GTs, yet the precise metabolic compositions and the developmental molecular dynamics of A.
Shuting Dong, Hongyu Chen, Sijie Sun, Miaoxian Guo, Chao Sun, Shilin Chen, Hongmei Luo   +6 more
wiley   +1 more source

HS-SPME Combined with GC-MS/O to Analyze the Flavor of Strong Aroma Baijiu Daqu

Foods, 2022
Daqu has gained wide attention because it is an essential source of microorganisms and flavor in baijiu production. In this study, HS-SPME combined with GC-MS/O was used to analyze the volatile flavor components of Strong aroma baijiu Daqu.
Zhe Wang, Song Wang, Pengfei Liao, Lu Chen, Jinyuan Sun, Baoguo Sun, Dongrui Zhao, Bowen Wang, Hehe Li   +8 more
doaj   +1 more source