Multiple-cumulative trapping non-saturated headspace SPME: A powerful tool to increase volatile fingerprints

2021 ◽  
Author(s):  
Steven Mascrez ◽  
Giorgia Purcaro
Keyword(s):  
Headspace Spme

scholarly journals Sensory Metabolite Profiling in a Date Pit Based Coffee Substitute and in Response to Roasting as Analyzed via Mass Spectrometry Based Metabolomics

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3377 ◽  
Author(s):  
Mohamed A. Farag ◽  
Asmaa M. Otify ◽  
Aly M. El-Sayed ◽  
Camilia G. Michel ◽  
Shaimaa A. ElShebiney ◽  
...  
Keyword(s):  
Metabolite Profiling ◽  
Headspace Analysis ◽  
Metabolite Profile ◽  
Phoenix Dactylifera ◽  
Primary Metabolite ◽  
Phoenix Dactylifera L ◽  
Coffee Substitute ◽  
Headspace Spme ◽  
Spme Headspace ◽  
Date Pits

Interest in developing coffee substitutes is on the rise, to minimizing its health side effects. In the Middle East, date palm (Phoenix dactylifera L.) pits are often used as a coffee substitute post roasting. In this study, commercially-roasted date pit products, along with unroasted and home-prepared roasted date pits, were subjected to analyses for their metabolite composition, and neuropharmacological evaluation in mice. Headspace SPME-GCMS and GCMS post silylation were employed for characterizing its volatile and non-volatile metabolite profile. For comparison to roasted coffee, coffee product was also included. There is evidence that some commercial date pit products appear to contain undeclared additives. SPME headspace analysis revealed the abundance of furans, pyrans, terpenoids and sulfur compounds in roasted date pits, whereas pyrroles and caffeine were absent. GCMS-post silylation employed for primary metabolite profiling revealed fatty acids’ enrichment in roasted pits versus sugars’ abundance in coffee. Biological investigations affirmed that date pit showed safer margin than coffee from its LD50, albeit it exhibits no CNS stimulant properties. This study provides the first insight into the roasting impact on the date pit through its metabolome and its neuropharmacological aspects to rationalize its use as a coffee substitute.

Functionalized carbon nanotube/ionic liquid-coated wire as a new fiber assembly for determination of methamphetamine and ephedrine by gas chromatography-mass spectrometry

2014 ◽  
Vol 6 (21) ◽  
pp. 8645-8653 ◽  
Author(s):  
Omid Narimani ◽  
Naser Dalali ◽  
Kobra Rostamizadeh
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Ionic Liquid ◽  
Carbon Nanotube ◽  
Steel Wire ◽  
Gas Chromatography Mass Spectrometry ◽  
Fiber Assembly ◽  
Coated Wire ◽  
Headspace Spme

Carbon nanotube–ionic liquid gel immobilized on a stainless steel wire as a novel fiber was successfully applied for headspace SPME of methamphetamine and ephedrine.

A headspace SPME-GC-ECD method suitable for determination of chlorophenols in water samples

2011 ◽  
Vol 399 (7) ◽  
pp. 2531-2538 ◽  
Author(s):  
Paulo de Morais ◽  
Teodor Stoichev ◽  
M. Clara P. Basto ◽  
Pedro N. Carvalho ◽  
M. Teresa S. D. Vasconcelos
Keyword(s):  
Water Samples ◽  
Headspace Spme

Comparison of Headspace SPME with Hydrodistillation and SFE for Analysis of the Volatile Components of the Roots of Valeriana officinalis var. latifolia

2008 ◽  
Vol 69 (5-6) ◽  
pp. 489-496 ◽  
Author(s):  
Baokang Huang ◽  
Luping Qin ◽  
Qingcui Chu ◽  
Qiaoyan Zhang ◽  
Lihong Gao ◽  
...  
Keyword(s):  
Volatile Components ◽  
Valeriana Officinalis ◽  
Headspace Spme

scholarly journals Analysis of Aroma Compounds of Heated Fats from Wagyu Beef and Other Cattle Using Headspace SPME

2012 ◽  
Vol 59 (3) ◽  
pp. 127-138 ◽  
Author(s):  
Koshiro Migita ◽  
Yuka Takahama ◽  
Yasushi Takahagi ◽  
Naoya Sugiyama ◽  
Keisuke Kikuchi ◽  
...  
Keyword(s):  
Aroma Compounds ◽  
Headspace Spme

scholarly journals Analysis of Trace Levels of Halonitromethanes (HNM) in Water using Headspace-SPME and GC-ECD

2015 ◽  
Vol 37 (5) ◽  
pp. 293-302
Author(s):  
So-Won Kang ◽  
Hee-Jong Son ◽  
Chang-Dong Seo ◽  
Kyung-A Kim ◽  
Jin-Taek Choi
Keyword(s):  
Headspace Spme
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