Coating of Sol–Gel Film on Silver Nanodendrite as a Novel Solid-Phase Microextraction Fiber for Determination of Volatile Aldehydes in Edible Oils

Hasanli, Fateme; Mohammadiazar, Sirwan; Bahmaei, Manoochehr; Sharif, Amir Abdolah Mehrdad

doi:10.1007/s12161-018-1189-y

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…To further indicate the supremacy of the proposed microextraction strategy, its significant features were compared with some of the similar reported microextraction methods. 22,[33][34][35][36] As can be seen in Table 2, the proposed procedure shows wider linear ranges and acceptable RSDs, compared to most of the listed procedures. Additionally, the LODs are lower than most of the reported methods, even compared to the method that used a MS detector.…”

Section: Comparison Of the Proposed Methods With Similar Reported Pro...mentioning

confidence: 86%

“…Additionally, the LODs are lower than most of the reported methods, even compared to the method that used a MS detector. 36 However, its LODs and LDRs are not comparable with the reduced-pressure fiber-in-needle method (RP-FIN) technique, which has used a low-pressure dynamic microextraction strategy. 22 Anyhow, the proposed method uses a low-cost and durable fiber and instrumentation (GC-FID), without any derivatization methods.…”

Section: Comparison Of the Proposed Methods With Similar Reported Pro...mentioning

confidence: 99%

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In-Situ Intercalating of Silica Nanospheres into Polypyrrole During Its Electropolymerization to Prepare a Sorbent for Headspace Microextraction of Aldehydes in Edible Oils

Hamdi

Dalvand²,

Ghiasvand³

et al. 2022

ACSi

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The quality of edible oils is significantly affected by autoxidation of lipids, which alters their flavor and nutritional quality through production of toxic materials like aldehydes (an important class of oil deterioration markers). Herein, an amino-silica nanospheres/polypyrrole (ASNS/PPy) nanocomposite sorbent was synthesized and used as the fiber coating for headspace solid-phase microextraction (HS-SPME) of aldehydes in edible oils, followed by gas chromatography (GC) separation and determination. Amino-silica nanoparticles were prepared by an amended Stöber method and composited with polypyrrole during its electropolymerization on the surface of a platinized stainless-steel fiber. The synergy between in-situ electropolymerization and rough surface of the platinized metal substrate created a durable fiber coating with unique uniformity, cohesiveness, and adsorption properties. The synthesized nanocomposite was characterized using Fourier transform infrared spectroscopy and scanning electron microscopy techniques. The performance of the prepared fiber was optimized by investigating the affecting variables including extraction temperature and time, stirring rate, and desorption conditions. The obtained limits of detection for hexanal and heptanal in sunflower oil were 0.005-0.009 μg mL-1. The prepared fiber exhibited excellent repeatability and reproducibility with the intra-fiber and inter-fiber relative standard deviations in the ranges of 3.9–8.8% and 7.3–15.1%, respectively. The proposed HS-SPME-GC strategy was successfully applied for the analysis of aldehydes in commercial edible oil samples.

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Section: Comparison Of the Proposed Methods With Similar Reported Pro...mentioning

confidence: 86%

Section: Comparison Of the Proposed Methods With Similar Reported Pro...mentioning

confidence: 99%

In-Situ Intercalating of Silica Nanospheres into Polypyrrole During Its Electropolymerization to Prepare a Sorbent for Headspace Microextraction of Aldehydes in Edible Oils

Hamdi

Dalvand²,

Ghiasvand³

et al. 2022

ACSi

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“…A majority of aldehydes, which have been reported as being green plant-like, grassy, dark chocolate, malty, fatty, sweet floral, apple-like, melonlike, nutty, and fruity, are present in various fresh fish and shellfish F I G U R E 3 Comparison of the quantities and relative contents of various compounds identified from four zaoyu products. Note: Brown croaker, mackerel, cutlassfish, and pike eel were numbered as BC, MC, CF, PE, respectively at multiple concentrations (Hasanli et al, 2018;Kajiwara et al, 1993;Maeztu et al, 2001;Tan & Siebert, 2008). C 3 and C 4 di-aldehydes usually presenting intense, grassy flavors, while C 5 to C 9 aldehydes is often presenting fatty and floral flavors (Cometto-Muñiz et al, 1998;Warner et al, 1996).…”

Section: Aldehydesmentioning

confidence: 99%

A comparative study of volatile flavor components in four types of zaoyu using comprehensive two‐dimensional gas chromatography in combination with time‐of‐flight mass spectrometry

Chen

Haiqing

et al. 2021

J. Food Process. Preserv.

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Volatiles of four zaoyu (Chinese traditional fermented fish) products prepared from different species of marine fish were analyzed by headspace solid-phase microextraction (HS-SPME) and comprehensive two-dimensional gas chromatography in combination with time-of-flight mass spectrometry (GC × GC/TOFMS). First, a 50/30 µm DVB/CAR/PDMS was used and the influence of several parameters on the efficiency of HS-SPME such as extraction temperature, time, salting-out effect, and stirring were optimized, odor activity values (OAVs) of volatile compounds were computed based on the threshold values of aroma constituents; the characteristic volatiles and their odor characteristics of the four zaoyu were investigated. The results demonstrated that the most effective extraction of the analytes was obtained with a 40 min extraction at 50°C with the addition of 20% NaCl and stirring at 300 r/min. Under these conditions, a total of 288 volatile components were tentatively identified based on mass spectra and comparison of linear retention indices in the four zaoyu products. Authenticated compounds included aldehydes, esters, alcohols, ketones, furans, lactones, nitrogen compounds, sulfur compounds, terpenes, phenols, etc. Among the identified types of volatile compounds, the number of esters is the largest, whereas the content of aldehydes is the highest. The results of OAVs comparisons proved that both aldehydes and esters provided the most significant contribution to the aromas of zaoyu, and each zaoyu product had its own unique active flavor components. Moreover, the OAVs of active flavor compounds common to the four examined zaoyu varied significantly. Our results substantiated that GC × GC/TOFMS could provide a robust technical means to understand the flavor characteristics of zaoyu and allow us to better evaluate and improve the flavor quality of the products with complex food matrix like zaoyu. Practical applications The method present in this research is suitable to characterize the volatile constituents of aquatic products, and could also be used for component characterization of How to cite this article: Chen Z, Tang H, Ou C, Xie C, Cao J, Zhang X. A comparative study of volatile flavor components in four types of zaoyu using comprehensive two-dimensional gas chromatography in combination with time-of-flight mass spectrometry.

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Silver nanoparticles supported onto a stainless steel wire for direct-immersion solid-phase microextraction of polycyclic aromatic hydrocarbons prior to their determination by GC-FID

et al. 2018

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The authors describe a new coating for use in solid-phase microextraction (SPME). Silver nanoparticles (AgNPs) were prepared by using gallic acid or glucose as the reducing agents, and then supported onto a stainless steel wire that was previously coated with a silver mirror. Coating with AgNPs was performed by a layer-by-layer approach of up to eight cycles of consecutive deposition of AgNPs and the thiol linker 1,8-octanedithiol. This procedure allows proper control of the coating thickness. Thicknesses are 3.2 μm and 3.5 μm with AgNPs obtained with gallic acid and glucose, respectively. This is in agreement with theoretical estimations (3.8 μm). The fibers were used in the direct-immersion SPME-GC-FID determination of 16 polycyclic aromatic hydrocarbons (PAHs) from different waters. The performance of the method was compared to the one using polydimethylsiloxane fibers (100 μm), which is the most suitable commercial SPME fiber for PAHs. Despite the low thickness of the AgNP coatings (compared to PDMS), the analytical features of the method using the most adequate coating (AgNPs prepared with gallic acid) include: (a) limits of detection down to 0.6 ng·mL; (b) intra-day, inter-day, and inter-fiber precisions (expressed as RSDs) lower than 22, 26 and 25%, respectively; and (c) an operational lifetime of ~150 extractions/desorption cycles. The analysis of various spiked environmental waters using these fibers resulted in adequate analytical performance. Graphical abstract Silver nanoparticle based coatings for solid-phase microextraction fibers were prepared by a layer-by-layer approach. They were used for determination of 16 PAHs in waters by gas chromatography. Limits of detection are < 14 μg·L and intra-day, inter-day, and inter-fiber precisions are <26%.

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Coating of Sol–Gel Film on Silver Nanodendrite as a Novel Solid-Phase Microextraction Fiber for Determination of Volatile Aldehydes in Edible Oils

Cited by 6 publications

References 25 publications

In-Situ Intercalating of Silica Nanospheres into Polypyrrole During Its Electropolymerization to Prepare a Sorbent for Headspace Microextraction of Aldehydes in Edible Oils

In-Situ Intercalating of Silica Nanospheres into Polypyrrole During Its Electropolymerization to Prepare a Sorbent for Headspace Microextraction of Aldehydes in Edible Oils

A comparative study of volatile flavor components in four types of zaoyu using comprehensive two‐dimensional gas chromatography in combination with time‐of‐flight mass spectrometry

Silver nanoparticles supported onto a stainless steel wire for direct-immersion solid-phase microextraction of polycyclic aromatic hydrocarbons prior to their determination by GC-FID

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