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Applications - Food and Drink

Application Note 250: Correlating consumer sensory experience of apple aroma with VOC profiles acquired by automated TD–GC–MS
This study shows that data acquired using the new Centri® automated multi-mode sampling and concentration system for gas chromatography–mass spectrometry (GC–MS) can be used to generate useful insights into the aroma profiles of foods. In the example investigated, the headspace profiles of two apple cultivars are sampled onto sorbent tubes, which are then analysed on Centri. The results of this analysis are then correlated with consumer sensory experience to highlight key volatiles of interest.
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Application Note 251: Screening foods and beverages for butylated hydroxytoluene (BHT) using automated headspace–trap GC–MS
This study shows that headspace samples acquired on the new Centri® automated multi-mode sampling and concentration system for gas chromatography–mass spectrometry (GC–MS) can be used to screen food and beverages for trace-level additives. A breakfast cereal and a tea infusion were investigated, and the antioxidant BHT detected in both samples at the ng/g level, along with a range of aroma compounds.
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Application Note 252: Quantitation of residual solvents in food packaging by automated headspace–trap GC–MS
This study shows that headspace samples acquired on the new Centri automated multi-mode sampling and concentration system for gas chromatography–mass spectrometry (GC–MS) can be used to screen food packaging for residual solvents and other additives. Analysis of a sample of a thin composite polymer used to contain savoury snacks found ethanol at 1.92 mg/m2, in addition to a number of other volatile compounds resulting from the manufacturing process.
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Application Note 254: Identifying low-level odorants in wine by automated high-capacity sorptive extraction with GC–MS
This study shows that immersive sorptive extraction using high-capacity HiSorb probes, automated on the new Centri multi-mode sampling and concentration system for gas chromatography–mass spectrometry (GC–MS), can be used to screen wine for ppb levels of two yeast-derived spoilage compounds, as well as a range of other compounds.
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Application Note 261: Enhanced aroma profiling of vodka using automated immersive high-capacity sorptive extraction with GC–MS
This study shows the advantages of immersive sorptive extraction, using high-capacity HiSorb probes, for the gas chromatography–mass spectrometry (GC–MS) analysis of a wide range of aroma compounds in vodka. Key benefits include full automation on the Centri multi-mode sampling and concentration system, re-collection for repeat analysis of a single sample under different conditions, and selective purging of ethanol.
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Application Note 262: Comprehensive VOC profiling of meat using dynamic headspace and automated TD–GC–MS analysis
This study shows that data acquired using the Centri® automated multi-mode sampling and preconcentration system for gas chromatography–mass spectrometry (GC–MS) can be used to generate useful insights into the aroma profiles of foods. In the example investigated, the dynamic headspace profiles of two cuts of lean steak were sampled at elevated temperature onto sorbent tubes, with subsequent preconcentration on Centri. Over 140 VOCs and SVOCs from a variety of chemical classes were identified, with the detection of a range of sulfur species demonstrating the inertness of the Centri flowpath and the use of optimised sorbent tubes and desorption conditions.
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Application Note 264: Enhancing the sensitivity of headspace analysis using large volume preconcentration (LVP) – Trace-level GC–MS analysis of VOCs in foods and beverages
This application note shows an increase in sensitivity for headspace analysis using a sample preparation technique called large volume preconcentration. This is particularly useful for the analysis of trace-level volatile organic aroma and flavour compounds in food and beverage samples.
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Application Note 270: Trace-level analysis of VOCs in a tomato product using headspace extraction with large volume preconcentration (LVP) and multi-step enrichment (MSE)
In this application note, we demonstrate the benefit of a novel technique – large volume preconcentration (LVP) – for enhancing traditional headspace analysis of trace-level volatile organic compounds (VOCs) that contribute to aroma and flavour in a food product – tomato paste. Using the Centri sample extraction and enrichment platform in headspace–trap mode, the extracted analytes are preconcentrated on an electrically-cooled, cryogen-free focusing trap. This allows for large extraction volumes to be used (up to 5 mL) while maintaining optimum chromatographic performance. We also highlight the benefits of multi-step enrichment (MSE), whereby repeat extractions from a single vial or multiple vials are delivered to the trap prior to a single GC injection. This results in a further improvement in the discovery and confident identification of trace-level aroma and flavour compounds.
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Application Note 271: Quantifying trace volatile aromatics (BTEX-styrene) in foodstuffs caused by migration from packaging using extraction and enrichment techniques to enhance GC–MS analysis
This study demonstrates the Centri sample extraction and enrichment platform’s unique multi-step enrichment (MSE) feature to enhance the discovery of trace-level, packaging-derived contaminants in food and beverage samples by gas chromatography–mass spectrometry (GC–MS). Common volatile aromatic impurities (benzene, toluene, ethylbenzene, xylene and styrene) were analysed in tomato paste, orange juice and coffee using headspace–trap mode, with and without multi-step enrichment. Limits of detection were found to be in the order of 0.03 (BTEX) to 0.4 ppb (styrene) from a single vial; however, using multi-step enrichment, the detection limits were determined to be four times lower.
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Application Note 272: Improved aroma profiling of breakfast cereal by automated high-capacity sorptive extraction (HiSorb™)
This study demonstrates the use of high-capacity sorptive extraction, HiSorb™, with multi-step enrichment (MSE) on the Centri® sample extraction and enrichment platform for enhancing the analysis of volatile organic compounds (VOCs) contributing to the overall aroma and flavour of a breakfast cereal product. MSE results showed a more comprehensive sample profile when compared to a single HiSorb extraction and provided improved confidence in the identification of trace-level compounds of interest, such as food additives, contaminants and compounds with potential toxicity.
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UK
UK
Markes International Ltd
Gwaun Elai Medi-Science Campus
Llantrisant
RCT, CF72 8XL
UK
Tel: +44 (0)1443 230935
Germany
Germany
Markes International GmbH
Bieberer Straße 1-7
63065 Offenbach am Main
Germany
 
Tel: +49 (0)69 6681089-10
USA (West)
USA
Markes International, Inc.
2355 Gold Meadow Way
Gold River, Sacramento
California 95670
USA
Tel: +1 866-483-5684 (toll-free)
China
China
Markes Instruments (Shanghai) Co., Ltd
Unit 1002, Building 1
No.418, Guilin Road
Shanghai 200233
P.R. China
Tel: +86 21 5465 1216
Part of Schauenburg International
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