Results 21 to 30 of about 8,773 (190)

Antibacterial Activity of Thymus vulgaris L. Essential Oil Vapours and Their GC/MS Analysis Using Solid-Phase Microextraction and Syringe Headspace Sampling Techniques

Molecules, 2021
While the inhalation of Thymus vulgaris L. essential oil (EO) is commonly approved for the treatment of mild respiratory infections, there is still a lack of data regarding the antimicrobial activity and chemical composition of its vapours.
Julien Antih, Marketa Houdkova, Klara Urbanova, Ladislav Kokoska   +3 more
doaj   +1 more source

Comparative chemical analysis of volatile compounds of Echinops ilicifolius using hydrodistillation and headspace solid-phase microextraction and the antibacterial activities of its essential oil [PDF]

Royal Society Open Science, 2018
The volatile compounds from various parts of Echinops ilicifolius (Compositae) such as flowers, leaves and roots obtained by hydrodistillation (HD) and headspace solid-phase microextraction (HS-SPME) methods were subsequently analysed by GC and GC/MS and
Razieh Mohebat, Mina Zare Bidoki
doaj   +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 [PDF]

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. Fresh onion is very perishable and drying is widely applied for extending shelf-life, thus obtaining a very easy-to-use functional food ingredient.
Cecchi L., Ieri F., Vignolini P., Mulinacci N., Romani A.   +4 more
openaire   +3 more sources

The Analysis of Airborne Trimethylamine Using a Headspace (HS)-SPME Method [PDF]

Journal of Korean Society for Atmospheric Environment, 2008
In this study, the analytical performance of trimethylamine (TMA) were investigated with respect to headspace-solid phase microextraction (HS-SPME) method. In order to induce the elution of aqueous TMA to headspace, NaOH was added as a decomposition reagent to aqueous TMA standard.
Ji-Won Ahn, Ki-Hyun Kim
openaire   +1 more source

Exploratory analysis of the volatile profile of beers by HS–SPME–GC [PDF]

Food Chemistry, 2008
Kohonen Neural Network maps were used for exploratory analysis of Brazilian Pilsner beers. The input data consisted of the peak areas of the volatile profile compounds of samples obtained after headspace solid phase microextraction coupled to gas chromatography.
Gilmare Antônia da Silva, Fabio Augusto, Ronei Jesus Poppi   +2 more
openaire   +1 more source

Volatile profile of yellow passion fruit juice by static headspace and solid phase microextraction techniques

Ciência Rural, 2015
The profile of volatile compounds of yellow passion fruit juice was analyzed by solid phase microextraction headspace (HS-SPME) and optimized static headspace (S-HS) extraction techniques. Time, temperature, NaCl concentration and sample volume headspace
Gilberto Costa Braga, Adna Prado, Jair Sebastião da Silva Pinto, Severino Matias de Alencar   +3 more
doaj   +1 more source

Discrimination and Characterization of the Volatile Organic Compounds in Schizonepetae Spica from Six Regions of China Using HS-GC-IMS and HS-SPME-GC-MS

Molecules, 2022
Volatile organic compounds (VOCs) are the main chemical components of Schizonepetae Spica (SS), which have positive effects on the quality evaluation of SS.
Chao Li, Huiying Wan, Xinlong Wu, Jiaxin Yin, Limin Zhu, Hanjiang Chen, Xinbo Song, Lifeng Han, Wenzhi Yang, Heshui Yu, Zheng Li   +10 more
doaj   +1 more source

Comparison of head space solid phase micro extraction with conventional and comprehensive gas chromatography mass spectrometry for volatile profiling of Irish whiskey

Talanta Open
Whiskey is a traditional distilled product produced on the island of Ireland that is currently experiencing a major expansion in export volume. Different styles of Irish whiskey exist, however only some very limited published information exists on the ...
Thomas J. Kelly, David T. Mannion, Christine O'Connor, Kieran N. Kilcawley   +3 more
doaj   +1 more source

Headspace solid-phase microextraction: Fundamentals and recent advances

Advances in Sample Preparation, 2022
Solid-phase microextraction (SPME) has become a powerful sample preparation technique which allows to efficiently isolate and enrich analytes from complex matrixes.
Carlina Lancioni, Cecilia Castells, Roberto Candal, Marcos Tascon   +3 more
doaj   +1 more source

Antibacterial Activity and Comparison of the Volatile Constituents Obtained by Several Extraction Methods from the Flowers, Stems and Leaves of

Natural Product Communications, 2012
The oils of the flowers, stems and leaves of Astrodaucus orientalis L. were separately extracted using hydrodistillation (HD), head-space solid-phase microextraction (HS-SPME) and microwave assisted head-space solid-phase microextraction (MA-HS-SPME ...
Marzieh Torabbeigi, Parviz Abroomand Azar, Anousheh Sharifan, Zahra Aghaei Meibodi   +3 more
doaj   +1 more source