Results 151 to 160 of about 8,773 (190)

The Investigation of Essential Oil ofVitex pseudo-negundWith Different Analytical Methods: Hydrodistillation, SFME, HS-SPME and MA-HS-SPME

Journal of Essential Oil Bearing Plants, 2011
Abstract Various analytical methods were used for extraction of essential oil of Vitex pseudo-negund and then analyzed by GC and GC-MS. The investigations testified that these analytical methods were able to extract different types of essential oil compounds.
Parviz Abroomand Azar, Marzieh Torabbeigi, Mohammad Saber Tehrani   +2 more
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The Optimization and HS-SPME/GC-MS Analysis in Pear Fruit

Advanced Materials Research, 2014
Solid-phase microextraction (SPME) is a rapid sample preparation in volatile analysis. The aromatic volatile compositions of ‘Kuerle’ were analyzed using SPME and gas chromatography-mass spectrometry (GC-MS). The effect of different types of fibers, extraction time, and extraction temperature on the volatile results were compared and discussed.
Guo Peng Li, Li Jing Lin, Jun Zhao, Ji Hua Li   +3 more
openaire   +1 more source

Rearrangement ofp-menthane terpenes by Carboxen during HS-SPME

Journal of Separation Science, 2002
The commercially available 75 μm Carboxen-Polydimethylsiloxane (PDMS) fibre for solid phase microextraction (SPME) has been shown to rearrange some monoterpenoids to p-cymene during headspace (HS)-SPME analysis. Ten commonly encountered monoterpenoids varying in structural and/or functional group were used as test compounds. The p-menthane hydrocarbons
Dimitrios Zabaras, S. Grant Wyllie
openaire   +1 more source

Development of an HS-SPME-GC method to determine the methyl anthranilate in Citrus honeys

Food Chemistry, 2008
An efficient and simple method for determination of methyl anthranilate (MA) in Citrus spp. honeys by headspace-solid-phase microextraction-gas chromatography (HS-SPME-GC) was developed and validated. Experimental design was used to investigate the effects of the principal extraction parameters.
BERTELLI, Davide, PAPOTTI, GIULIA, LOLLI, Massimo, A. G. Sabatini, PLESSI, Maria   +4 more
openaire   +1 more source

Study of Chromatographic Fingerprint of the Flavor in Beer by HS-SPME-GC

Analytical Letters, 2011
The chromatographic fingerprint of the flavor in beer, which was obtained by analyzing 28 beer samples (6 tastes) from 4 breweries, was established by Headspace Solid-phase Microextraction coupled with Gas Chromatogram Flame Ionization Detector (HS-SPME-GC-FID).
Jinhong Jiao, Nianya Ding, Taqing Shi, Xiaolan Chai, Peisheng Cong, Zhongliang Zhu   +5 more
openaire   +1 more source

Beer Volatile Analysis: Optimization of HS/SPME Coupled to GC/MS/FID

Journal of Food Science, 2011
Abstract:  A powerful technique was developed for the identification and quantification of 9 volatile compounds of beer, using headspace solid phase micro‐extraction (HS/SPME) and gas chromatograph coupled to a mass spectrometer and a flame ionization detector (GC/MS/FID).
Gustavo, Charry-Parra, Maritza, Dejesus-Echevarria, Fernando J, Perez   +2 more
openaire   +2 more sources

Volatile emerging contaminants in melon fruits, analysed by HS-SPME-GC-MS

Food Additives & Contaminants: Part A, 2017
The aim of this research was to develop and validate a headspace-solid phase micro-extraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) method for the determination of volatile emerging contaminants in fruit. The method showed good precision (RSD ≤ 14%) and satisfactory recoveries (99.1-101.7%) and LOD and LOQ values ranging between 0.011-0 ...
Cincotta, Fabrizio, Verzera, Antonella, Tripodi, Gianluca, Condurso, Concetta   +3 more
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Characterization of natural vanilla flavour in foodstuff by HS‐SPME and GC‐C‐IRMS

Flavour and Fragrance Journal, 2016
AbstractVanillin can be obtained by extraction from the pods of Vanilla (organic vanillin), by synthetic pathways using different precursors (mainly lignin and guaiacol), and by enzymatic bioconversion (biovanillin) from natural precursors, (mainly ferulic acid, eugenol and isoeugenol, and turmeric acid).
SCHIPILLITI, LUISA, BONACCORSI, Ivana Lidia, MONDELLO, Luigi   +2 more
openaire   +1 more source

HS-SPME-GC-MS as an alternative method for NDMA analysis in ranitidine products

Journal of Pharmaceutical and Biomedical Analysis, 2020
N-nitrosodimethylamine (NDMA) is a carcinogenic contaminant that was accidentally discovered in drugs, such as valsartan and ranitidine, and more recently in metformin. Liquid chromatography tandem mass spectrometry (LC-MS/MS) is the method typically used for the analysis of NDMA in ranitidine.
Yahya M. Alshehri, Thamer S. Alghamdi, Fahad S. Aldawsari   +2 more
openaire   +2 more sources

Determination of venlafaxine in post-mortem whole blood by HS-SPME and GC-NPD

Forensic Science International, 2012
Venlafaxine is a phenethylamine derivative widely prescribed for the treatment of depression which inhibits both serotonin and norepinephrine reuptake (SNRI). In treatment with antidepressants of patient with depression and other psychiatric disorders there is also increased risk of suicidal thought and behaviour. Several lethal intoxications involving
O, Mastrogianni, G, Theodoridis, K, Spagou, D, Violante, T, Henriques, A, Pouliopoulos, K, Psaroulis, H, Tsoukali, N, Raikos   +8 more
openaire   +2 more sources