Results 21 to 30 of about 3,686 (163)

Enhancing the Understanding of Aroma Formation during Coffee Roasting Using DHS-GC×GC-TOFMS and Chemometrics [PDF]

ACS Omega
Andre Cunha Paiva, Carlos Alberto Teixeira, Leandro Wang Hantao   +2 more
doaj   +2 more sources

A green and sustainable method for Capsicum volatilome investigation by means of headspace solid-phase microextraction combined with flow-modulated two-dimensional gas chromatography-mass spectrometry using hydrogen as carrier gas

Green Analytical Chemistry, 2023
The present research is focused on the development of a green and sustainable analytical method, based on the use of headspace solid-phase microextraction (HS SPME), and hydrogen as carrier gas, within the context of fast flow-modulation comprehensive ...
Micaela Galletta, Mariosimone Zoccali, Donato Creti, Luigi Mondello, Peter Q. Tranchida   +4 more
doaj   +1 more source

Principal component analysis of comprehensive three-dimensional gas chromatography time-of-flight mass spectrometry data

Journal of Chromatography Open, 2022
Comprehensive three-dimensional (3D) gas chromatography (GC3) coupled to time-of-flight-mass spectrometry (GC3-TOFMS) is an intriguing extension of the well-established comprehensive two-dimensional gas chromatography (GC×GC) technique.
Paige E. Sudol, Sonia Schöneich, Robert E. Synovec   +2 more
doaj   +1 more source

From freshness to preservation: insights into processing and storage impacts on purple passion fruit volatilome. [PDF]

J Sci Food Agric
Abstract BACKGROUND Purple passion fruit is highly appreciated for its distinctive sweet flavour, low acidity, and aromatic profile, making it a desirable choice for fresh consumption and juice production. To ensure microbiological safety and extend shelf life, juice products typically undergo thermal pasteurization, which can alter their ...
Fonseca AM, Pinto CA, Saraiva JA, Silvestre AJ, Rocha SM.   +4 more
europepmc   +2 more sources

Production of Secondary Organic Aerosol During Aging of Biomass Burning Smoke From Fresh Fuels and Its Relationship to VOC Precursors [PDF]

, 2019
After smoke from burning biomass is emitted into the atmosphere, chemical and physical processes change the composition and amount of organic aerosol present in the aged, diluted plume. During the fourth Fire Lab at Missoula Experiment, we performed smog-
Ahern, A. T, Barsanti, K. C, Donahue, N. M, Hatch, L. E, Presto, A. A, Robinson, A. L, Robinson, E. S, Saleh, R., Stockwell, C. E, Sullivan, R. C, Tkacik, D. S, Yokelson, R. J   +11 more
core   +2 more sources

Improved sample storage, preparation and extraction of blueberry aroma volatile organic compounds for gas chromatography

Journal of Chromatography Open, 2023
Aroma profiles of blueberries contain a heterogeneous mixture of volatile organic compounds (VOCs), and headspace sampling is the most efficient approach to VOC extraction from berries.
Ryan P. Dias, Trevor A. Johnson, L.Felipe V. Ferrão, Patricio R. Munoz, A. Paulina de la Mata, James J. Harynuk   +5 more
doaj   +1 more source

Allergic asthma exhaled breath metabolome: a challenge for comprehensive two-dimensional gas chromatography [PDF]

, 2012
Allergic asthma represents an important public health issue, most common in the paediatric population, characterized by airway inflammation that may lead to changes in volatiles secreted via the lungs.
Barros, António S., Bilelo, M. J., Caldeira, M., Câmara, J. S., Morête, A., Perestrelo, Rosa Maria de Sá, Rocha, Sílvia M.   +6 more
core   +1 more source

Exploration of Extraction and Separation Techniques for Routine Trace Analysis of Organic Compounds in Water: Dispersive Liquid-Liquid Microextraction vs Liquid-Liquid Extraction

Journal of Chromatography Open, 2022
Dispersive liquid-liquid microextraction (DLLME) was compared to liquid-liquid extraction (LLE) in terms of the methods’ abilities to analyze samples and ultimately to provide information to an analyst.
Trevor A. Johnson, Michael D.S. Armstrong, A. Paulina de la Mata, James J. Harynuk   +3 more
doaj   +1 more source

Comparison of Three Extraction Techniques for the Determination of Volatile Flavor Components in Broccoli

Foods, 2020
To analyze aroma active components in a food product, the crucial step is to select a suitable extraction technique. It should provide isolation of all components responsible for aroma creation, without the formation of any artifacts during the procedure.
Martyna Natalia Wieczorek, Małgorzata Majcher, Henryk Jeleń   +2 more
doaj   +1 more source

GC×GC-TOFMS analysis of ethanodiamondoids in Ordovician oil from well SN1, Tarim Basin

Shiyou shiyan dizhi, 2023
By 2D gas chromatography and time-of-flight mass spectrometry (GC×GC-TOFMS), 81 ethanodiamondoids with 1-3 cages were detected quantitatively in Ordovician crude oil from well SN1, Shuntuoguole area, Tarim Basin, including 47 ethanoadamantanes with total
Xiao YU, Anlai MA, Xianqing LI, Xiuxiang ZHU, Jianwei FEI   +4 more
doaj   +1 more source