Evaluation of Different Analysis Methods for the Encapsulation Efficiency of Amylose Inclusion Compound

Recently amylose has drawn much attention as a potential vehicle for the nanoencapsulation of different flavor molecules, and the encapsulation efficiency of the complex is an important index for the evaluation of its embedding effect. In this study, three different methods for assessing encapsulation efficiency of amylose-flavor complexes were compared. We chose heptanol and menthone as the flavor molecules, as both of them exhibit a typical odor. The complexes were prepared by the melting method, and their structures were characterized by XRD. In addition, the encapsulation efficiency was determined by thermal gravimetric analysis (TGA), potentiometric titration (PT), and headspace solid phase microextraction gas chromatography (HS-SPME-GC), respectively. The results showed that PT results were within the reported literature range while HS-SPME-GC seemed to overestimate the results and TGA results were the lowest. What is more, the operations of TGA and PT were relatively simple and the results were reproducible, while the HS-SPME-GC method displayed excellent high sensitivity. Therefore, PT method is the best method for assessing encapsulation efficiency of amylose-flavor complexes.

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Combined headspace single-drop microextraction and solid-phase microextraction for the determination of phenols as their methyl ethers by gas chromatography-mass spectrometry

Analytical Methods ◽

10.1039/c7ay02275a ◽

2017 ◽

Vol 9 (46) ◽

pp. 6590-6598 ◽

Cited By ~ 10

Author(s):

Archana Jain ◽

Soumitra Soni ◽

Kishan Reddy-Noone ◽

Aradhana K. K. V. Pillai ◽

Krishna K. Verma

Keyword(s):

Solid Phase Microextraction ◽

Solid Phase ◽

High Sensitivity ◽

Large Mass ◽

Gas Chromatography Mass Spectrometry ◽

Gas Chromatograph ◽

Single Drop ◽

Single Drop Microextraction ◽

Single Drop Extraction

A combination of headspace large volume single drop extraction and solid phase microextraction permitted attainment of high sensitivity by transferring an overall large mass of analytes into a gas chromatograph.

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Differential thermal analysis, thermal gravimetric analysis, and solid phase micro-extraction gas chromatography analysis of water and fuel absorption in diesel soot

Journal of Aerosol Science ◽

10.1016/j.jaerosci.2009.10.006 ◽

2010 ◽

Vol 41 (2) ◽

pp. 237-241 ◽

Cited By ~ 7

Author(s):

C. Ayrault ◽

J.S. Chang ◽

D. Ewing ◽

J.S. Cotton ◽

I.E. Gerges ◽

...

Keyword(s):

Thermal Analysis ◽

Gas Chromatography ◽

Differential Thermal Analysis ◽

Solid Phase ◽

Diesel Soot ◽

Gravimetric Analysis ◽

Solid Phase Micro Extraction ◽

Thermal Gravimetric ◽

Chromatography Analysis ◽

Gas Chromatography Analysis

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High-sensitivity determination of 2-chlorovinylarsonous acid in biomedical samples for retrospective detection of exposure to lewisite upon antidotal therapy

Spectroscopy An International Journal ◽

10.1155/2011/840141 ◽

2011 ◽

Vol 26 (1) ◽

pp. 1-10 ◽

Cited By ~ 8

Author(s):

N. L. Koryagina ◽

E. S. Ukolova ◽

E. I. Savel’eva ◽

N. G. Voitenko ◽

O. I. Orlova ◽

...

Keyword(s):

Blood Cells ◽

Solid Phase Microextraction ◽

Solid Phase ◽

Single Injection ◽

High Sensitivity ◽

Rat Urine ◽

First Time ◽

Antidotal Therapy

A procedure for determination of the lewisite metabolite 2-chlorovinylarsonous acid (CVAA) in biomedical samples, involving derivatization of the latter with propane-1,3-dithiol and head-space solid-phase microextraction of the derivative on a 100-μm PDMS fiber followed by GC-MS, was applied for the first time to analysis ofin vivosamples. The detection limits of CVAA in urine, plasma and red blood cells were 0.1, 1.0 and 10 ng/ml, respectively. Upon exposure to lewisite at a dose of 1.6 mg/kg, CVAA could be detected in rat urine for about three months. Study of the effect of a single injection of the antidote unithiol on the CVAA excretion profile revealed more active CVAA excretion during the first two days after the injection, compared to that observed in the absence of antidotal therapy.

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Optimization of solid phase microextraction - capillary zone electrophoresis - mass spectrometry for high sensitivity protein identification

Electrophoresis ◽

10.1002/elps.1150191314 ◽

1998 ◽

Vol 19 (13) ◽

pp. 2338-2347 ◽

Cited By ~ 40

Author(s):

Daniel Figeys ◽

Yanni Zhang ◽

Ruedi Aebersold

Keyword(s):

Mass Spectrometry ◽

Capillary Zone Electrophoresis ◽

Solid Phase Microextraction ◽

Protein Identification ◽

Solid Phase ◽

High Sensitivity ◽

Zone Electrophoresis ◽

Capillary Zone

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A Spectroscopic Study of Solid-Phase Chitosan/Cyclodextrin-Based Electrospun Fibers

Fibers ◽

10.3390/fib7050048 ◽

2019 ◽

Vol 7 (5) ◽

pp. 48 ◽

Cited By ~ 1

Author(s):

Chen Xue ◽

Lee D. Wilson

Keyword(s):

Solid Phase ◽

Electrospinning Process ◽

Proton Donor ◽

Electrospun Fibers ◽

Gravimetric Analysis ◽

Thermal Gravimetric ◽

Scanning Calorimetry ◽

Solvent Proton ◽

Fiber Coatings

In this study, chitosan (chi)/hydroxypropyl-β-cyclodextrin (HPCD) 2:20 and 2:50 Chi:HPCD fibers were assembled via an electrospinning process that contained a mixture of chitosan and HPCD with trifluoroacetic acid (TFA) as a solvent. Complementary thermal analysis (thermal gravimetric analysis (TGA)/differential scanning calorimetry (DSC)) and spectroscopic methods (Raman/IR/NMR) were used to evaluate the structure and composition of the fiber assemblies. This study highlights the multifunctional role of TFA as a solvent, proton donor and electrostatically bound pendant group to chitosan, where the formation of a ternary complex occurs via supramolecular host–guest interactions. This work contributes further insight on the formation and stability of such ternary (chitosan + HPCD + solvent) electrospun fibers and their potential utility as “smart” fiber coatings for advanced applications.

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Method for trihalomethane analysis in drinking water by solid-phase microextraction with gas chromatography and mass spectrometry detection

Water Science & Technology Water Supply ◽

10.2166/ws.2013.052 ◽

2013 ◽

Vol 13 (2) ◽

pp. 499-506 ◽

Cited By ~ 2

Author(s):

S. Valencia ◽

J. Marín ◽

G. Restrepo

Keyword(s):

Mass Spectrometry ◽

Gas Chromatography ◽

Drinking Water ◽

Solid Phase Microextraction ◽

Solid Phase ◽

High Sensitivity ◽

Sample Volume ◽

Mass Spectrometry Detection ◽

Experimental Parameters ◽

Magnetic Stirring

Headspace solid-phase microextraction coupled with gas chromatography and mass spectrometry detection (HS/SPME-GC/MSD) was optimized for trihalomethane (THM) determination in drinking water. A 75 μm fiber coated with carboxen/polydimethylsiloxane (75-CAR.PDMS) was used. Experimental parameters such as sample volume, time and temperature of extraction, time and temperature of desorption, magnetic stirring, and addition of sodium chloride (NaCl) were studied to determine their influence on THM extraction. Furthermore, analytical parameters such as linearity and detection limit were also evaluated. High sensitivity with detection limits in the μg/L range as well as a good linearity and reproducibility were achieved. Therefore, the HS/SPME-GC/MSD method with 75-CAR.PDMS is suitable for monitoring THMs in drinking water.

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Rapid and high-sensitivity determination of phenylarsine oxide in environmental samples by a new technique: solid-phase microextraction followed by corona discharge ion mobility spectrometry

Analytical Methods ◽

10.1039/c9ay02152c ◽

2019 ◽

Vol 11 (47) ◽

pp. 5969-5975

Author(s):

Sajad Asadi ◽

Bozorgmehr Maddah

Keyword(s):

Corona Discharge ◽

Ion Mobility Spectrometry ◽

Ion Mobility ◽

Environmental Samples ◽

Solid Phase Microextraction ◽

Solid Phase ◽

High Sensitivity ◽

Phenylarsine Oxide ◽

A New Technique

A new, rapid and sensitive method using solid-phase microextraction coupled with corona discharge ion mobility spectrometry was employed for determining phenylarsine oxide in environmental samples after derivatization with 1,3-propanedithiol.

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An Innovative Rapid Method for Analysis of 10 Organophosphorus Pesticide Residues in Wheat by HS-SPME-GC-FPD/MSD

Journal of AOAC International ◽

10.5740/jaoacint.15-0062 ◽

2016 ◽

Vol 99 (2) ◽

pp. 520-526 ◽

Cited By ~ 6

Author(s):

Xin Du ◽

YongLin Ren ◽

Stephen J Beckett

Keyword(s):

Pesticide Residues ◽

Solid Phase Microextraction ◽

Capillary Column ◽

Solid Phase ◽

Organophosphorus Pesticide ◽

High Sensitivity ◽

Rapid Screening ◽

Injection Port ◽

Plasma Desorption ◽

Linear Regressions

Abstract The rapid detection of pesticide residues in wheat has become a top food security priority. A solvent-free headspace solid-phase microextraction (HS-SPME) has been evaluated for rapid screening of organophosphorus pesticide (OPP) residues in wheat with high sensitivity. Individual wheat samples (1.7 g), spiked with 10 OPPs, were placed in a 4 mL sealed amber glass vial and heated at 60°C for 45 min. During this time, the OPP residues were extracted with a 50 μm/30 μm divinylbenzene (DVB)/carboxen (CAR)/plasma desorption mass spectroscopy polydimethylsiloxane (PDMS) fiber from the headspace above the sample. The fiber was then removed and injected into the GC injection port at 250°C for desorption of the extracted chemicals. The multiple residues were identified by a GC mass spectrometer detector (GC-MSD) and quantified with a GC flame photometric detector (GC-FPD). Seven spiked levels of 10 OPPs on wheat were analyzed. The GC responses for a 50 μm/30 μm DVB/CAR/PDMS fiber increased with increasing spiking levels, yielding significant (R2 > 0.98) linear regressions. The lowest LODs of the multiple pesticide standards were evaluated under the conditions of the validation study in a range of levels from 0 (control) to 100 ng of pesticide residue per g of wheat that separated on a low-polar GC capillary column (Agilent DB-35UI). The results of the HS-SPME method were compared with the QuEChERS AOAC 2007.01 method and they showed several advantages over the latter. These included improved sensitivity, selectivity, and simplicity.

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