Determination of fragrance ingredients in fish by ultrasound-assisted extraction followed by purge &amp; trap

Chen, Chang-Er; Löfstrand, Karin; Adolfsson-Erici, Margaretha; MacLeod, Matthew

doi:10.1039/c7ay00017k

Cited by 9 publications

(14 citation statements)

References 32 publications

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“…For this study, the depuration rate constant ( k T ) [day –1 ], benchmarked depuration rate constant ( k TG ) [day –1 ], uptake rate constant ( k 1 ) [day –1 ], and derived kinetic BCF as well as benchmarked kinetic BCF (BCF BM ) [L kg –1 ww] were calculated following the method described in Chen et al , with the difference that peak areas rather than concentrations were used in the calculations. Briefly, the depuration rate k T was calculated from the natural logarithm of the measured peak areas in fish at different time points where AX denotes the peak areas of test substance X at time t , which are proportional to chemical activities and lipid-based concentrations of the substance in the fish tissue. , …”

Section: Theorymentioning

confidence: 99%

“…Recent advances in using dietary exposure and internal benchmarking to determine a kinetic BCF of essential oilsa group of well-characterized hydrophobic UVCBshave succeeded in addressing some of these challenges. − The developed methods provide a way of measuring multiple constituents of essential oils in parallel and establish quality control criteria for the dietary exposure test and the derived kinetic BCFs . However, methods described to date rely on the availability of analytical standards for the individual constituents, which places limits on the number of constituents in a UVCB for which data can be obtained.…”

Section: Introductionmentioning

confidence: 99%

“…Many UVCBs have hundreds to thousands of constituents that can vary between batches and for which no analytical standards are commercially available . Moreover, the published target analysis methods require solvent extraction and clean-up steps. , For volatile UVCBs such as essential oils or volatile constituents in a UVCB, every sample-processing step has the risk of losing target analytes due to evaporation, which could change the relative composition of the mixture. − …”

Section: Introductionmentioning

confidence: 99%

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Combining Headspace Solid-Phase Microextraction with Internal Benchmarking to Determine the Elimination Kinetics of Hydrophobic UVCBs

Sühring

Sjøholm

Mayer

et al. 2021

Environ. Sci. Technol.

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Substances classified as unknown or variable composition, complex reaction products or biological origin (UVCB) present a challenge for environmental hazard and risk assessment. Here, we present a novel approach for whole-substance bioconcentration testing applied to cedarwood oilan essential oil composed of volatile, hydrophobic organic chemicals. The method yields whole-body elimination rate constants for a mixture of constituents. Our approach combines in vivo dietary fish exposure with internal benchmarking and headspace solid-phase microextraction (HS-SPME) equilibrium sampling followed by suspectscreening analysis. We quantified depuration rate constants of 13 individual cedarwood oil constituents based on relative peak areas using gas chromatography (GC) coupled with Orbitrap-mass spectrometry (MS) and GC triple-quadrupole (QqQ)-MS. For seven constituents with available analytical standards, we compared the rate constants to the results obtained from solvent extraction, clean-up, and targeted GC−MS analysis. The HS-SPME sampling approach allowed for automated sample extraction and analyte enrichment while minimizing evaporative losses of the volatile target analytes and reducing matrix interferences from low-volatility organics. The suspect-screening analysis enabled the quantification of constituents without available analytical standards, while the internal benchmarking significantly reduced variability from differences in delivered dose and analytical variability between the samples.

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Section: Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combining Headspace Solid-Phase Microextraction with Internal Benchmarking to Determine the Elimination Kinetics of Hydrophobic UVCBs

Sühring

Sjøholm

Mayer

et al. 2021

Environ. Sci. Technol.

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“…Furthermore, d-Limonene is insoluble in water [46] and can bioaccumulate in fish and other aquatic organisms, making them toxic to other organisms that feed on them and to the ecosystems. With a newly proposed analytical method, it is possible to determine the presence of this compound in fish tissue at the laboratory for further studies [47]. In soil, the compound has little mobility; in the aquatic environment, it is expected to adsorb the sediment and organic matter in suspension [48].…”

Section: Presence Of D-limonene In the Water Discharged From The Coolmentioning

confidence: 99%

Life Cycle Assessment of a Combined-Cycle Gas Turbine with a Focus on the Chemicals Used in Water Conditioning

et al. 2019

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Life Cycle Assessments (LCAs) of thermoelectric plants frequently focus on impacts related to fuel and water consumption. The purpose of this research was to determine the environmental impact of the chemicals used for water conditioning in a Combined-Cycle Gas Turbine (CCGT) plant in Mexico. An LCA of the electricity generation process was carried out using the SimaPro software with the ReCiPe method, which includes 18 midpoint environmental impact categories. The process was broken down into stages, which were analyzed separately. To complete the study, an analysis of the fuel cycle and the materials used for maintenance works were included. Results showed that the most affected impact categories were water depletion (9.77 × 10−1 m3/MWh), due mainly to the high volume of water consumption in the cooling systems and the reverse osmosis process; freshwater, marine, and terrestrial ecotoxicity (1.59 × 10−2 kg 1,4 -DB eq/MWh), and human toxicity (1.1 × 10−1 kg 1,4-DB eq/MWh)—due to the production and consumption of the chemicals used. One such chemical is hydrazine, which is a highly toxic compound to humans and other living organisms. It is worth mentioning that traces of some chemicals in wastewater discharges could be considered as emerging pollutants because of their potential health hazards, which have not been reported yet.

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“…As a consequence, the risk of allergy induced by some perfume ingredients is still being the subject of 1 3 scientific debate [3]. Moreover, due to their potential negative effects, they present a growing threat to the environment [6].…”

Section: Introductionmentioning

confidence: 99%

The potential of LC–MS technique in direct analysis of perfume content

Kempińska-Kupczyk

Kot‐Wasik

2019

Monatsh Chem

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Perfumes are products that consist of a wide range of natural and synthetic compounds. Due to complex composition, the determination of their ingredients is a difficult task. Most of the perfume components are either volatile or semi-volatile; however, most of the attention has been paid to volatile ones, and thus, gas chromatography or electronic noses are generally used. Nevertheless, in this study, liquid chromatography coupled with mass spectrometry has been applied for direct perfume analysis. Four samples of different best-selling perfumes (two men's and two women's fragrances) and their counterfeits were taken under consideration. The identification of their ingredients was performed by combining obtained results with information available in on-line databases. Compounds specific to essential oils and carrier oils, antioxidants and dyes were generally detected in both types of samples, whereas components of the fragrance of animal origin were only found in brandname perfumes. On the other hand, counterfeits contained more types of polymer emulsifiers. Therefore, based on the results obtained, it can be concluded that liquid chromatography coupled with very sensitive detection technique can be used as a complementary approach to analyses performed with gas chromatography. Moreover, this technique offers the possibility to determine compounds that have low thermostability.

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Determination of fragrance ingredients in fish by ultrasound-assisted extraction followed by purge & trap

Abstract: Acid-sensitive organic chemicals representative of fragrance materials can be isolated from fish tissue by extraction into a mild solvent followed by capture from the gas phase.

Cited by 9 publications

References 32 publications

Combining Headspace Solid-Phase Microextraction with Internal Benchmarking to Determine the Elimination Kinetics of Hydrophobic UVCBs

Combining Headspace Solid-Phase Microextraction with Internal Benchmarking to Determine the Elimination Kinetics of Hydrophobic UVCBs

Life Cycle Assessment of a Combined-Cycle Gas Turbine with a Focus on the Chemicals Used in Water Conditioning

The potential of LC–MS technique in direct analysis of perfume content

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