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Applications – Food & Fragrance


Application Note 502: Automated identification of trace-level VOCs in potato crisps using TD–GC–MS
This Application Note describes the use of TD–GC–TOF MS to collect comprehensive aroma profiles for foodstuffs, such as potato crisps. Also shown is the automated identification of trace-level compounds such as pyrazines using TOF-DS software, saving time and improving accuracy in product quality control.
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Application Note 503: Analysis of aroma compounds in beer over a wide concentration range by GC–TOF MS
This Application Note describes the use of BenchTOF to analyse aroma compounds in beer. Sampling by sorptive extraction and analysis by thermal desorption–GC–MS allowed confident mass spectral determination of chromatographic peaks varying in abundance by more than a factor of 10,000. In a separate experiment, re-collection was used to accurately quantify both high-concentration and trace-level samples in consecutive runs of the same sample.
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Application Note 506: Accurate identification of fragrance allergens using TargetView GC–MS software
This Application Note describes the use of TargetView to enhance the identification of trace-level compounds (24 SCCP allergens) in a complex fragrance sample using fast GC. It is shown that although the fast oven ramp increased both the degree of co-elution and the concentration load, it did not reduce the number of compounds identified, nor did it significantly affect the degree of confidence in the identification.
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Application Note 508: Simplifying the aroma profiling of tobacco using TargetView GC–MS software
This Application Note shows the use of TargetView to detect trace-level components in tobacco headspace. Tobacco of Indian and UK origin was headspace-sampled and analysed by GC–MS, with much greater concentrations of volatiles being found for the Indian tobacco. In addition, TargetView’s sophisticated algorithms allowed the confident identification of pyridine, despite it being partly obscured by the tail of a much larger component.
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Application Note 509: Identification of off-odours in wine using TargetView GC–MS software
This Application Note shows how TargetView can be used to rapidly and confidently identify volatile compounds in red wine associated with a spoilage yeast (‘Brett’). Bordeaux was sampled using sorptive extraction and thermal desorption–GC–MS, and TargetView used to screen the chromatogram against a specially created library. As well as the high-confidence identification of three ‘Brett’ marker compounds, the ability of TargetView to deconvolve co-eluting compounds is demonstrated by the identification of the two components contributing to a single complex peak.
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Application Note 511: Detecting the compounds responsible for ‘boar taint’ in pig fatback by GC–TOF MS and TargetView software
This Application Note shows that BenchTOF and TargetView can be successfully applied to the detection of compounds that contribute to the unpleasant odour known as ‘boar taint’ in pig meat. Using a purge-and-trap system and TD–GC–MS, three target compounds were identified with confidence despite the extreme complexity of the sample. This demonstrates the ability of BenchTOF to produce ‘reference-quality’ spectra, as well as the power of TargetView to data-mine even highly complex chromatograms.
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Application Note 515: Enhanced odour profiling of strawberries using TD–GC–TOF MS
This Application Note describes the use of BenchTOF and TargetView to detect and identify trace-level components in the headspace gas above fresh strawberries. The sensitivity and versatility of the system is demonstrated by an ‘all-component’ search against NIST and by a targeted search for various odour-active sulfur compounds.
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Application Note 517: The identification and quantitation of trace-level compounds in beer by GC–TOF MS
This Application Note shows that BenchTOF is a powerful detector for the trace-level flavour compounds present in the complex profiles resulting from the sorptive extraction of beer. The generation of linear responses at sub-ppb levels is a particular feature of the work, while the ability of BenchTOF to produce ‘classical’ spectra matching those in commerical libraries greatly simplifies automated compound identification.
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Application Note 519: Confident identification of potentially hazardous components in air freshener by GC×GC–TOF MS
This Application Note shows how BenchTOF time-of-flight mass spectrometers, when coupled with GC×GC, can provide confident characterisation of complex mixtures, such as air fresheners, in a single analysis.
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Application Note 520: Enhanced screening of cigarette smoke extracts using GC–TOF MS and TargetView software
This Application Note shows that BenchTOF time-of-flight mass spectrometers, in combination with TargetView compound-identification software, offer significant benefits over quadrupole instruments for the screening of liquid extracts containing the volatile constituents of cigarette smoke.
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Application Note 522: Characterisation of allergens in cosmetics by GC×GC–TOF MS with Select-eV variable-energy electron ionisation
This Application Note shows that BenchTOF instruments, coupled with GC×GC, can provide a high-performance solution for the detection and quantitation of allergens in complex cosmetics extracts. Revolutionary variable-energy electron ionisation technology was also shown to enhance both the sensitivity and selectivity of analyses by generating mass spectra containing structurally-significant fragment ions with an improved molecular ion signal.
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Application Note 523: Enhancing aroma profiling of wine with GC–TOF MS
This Application Note shows that BenchTOF time-of-flight mass spectrometers, coupled with GC, can provide a high-performance solution for the detection and quantitation of aroma compounds in wine extracts. In particular, we show how the ChromCompare software module allows rapid identification of differences between samples, and how Select-eV variable-energy ionisation capability enhances both the sensitivity and selectivity of analyses.
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Application Note 530: Enhanced separation and identification of fungicides and other components in wine by headspace SPME–GC×GC–TOF MS
This Application Note describes the use of solid-phase micro-extraction (SPME) coupled with GC×GC–TOF MS for the detection of trace-level fungicides and compounds responsible for undesirable attributes (‘organoleptic faults’) in wine. Of particular interest are the fungicides, which because of their trace levels are difficult to detect using conventional quadrupole GC–MS without resorting to selected ion monitoring mode.
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Application Note 532: Comprehensive characterisation of essential oil by GC×GC–TOF MS
This Application Note shows that BenchTOF time-of-flight mass spectrometers, in conjunction with GC×GC, provide a high-performance solution for comprehensively screening the total composition of essential oils.
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Application Note 533: Comprehensive analysis of coffee bean extracts by GC×GC–TOF MS
This Application Note shows that BenchTOF time-of-flight mass spectrometers, in conjunction with GC×GC, provide a high-performance solution for screening for key aroma compounds in complex coffee extracts.
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Application Note 535: Comparison of the aroma profiles of hops by TD–GC–TOF MS with Select-eV variable-energy electron ionisation
This Application Note demonstrates the high performance of a TD–GC–TOF MS system for the analysis of complex aroma profiles from hops. The use of complementary soft electron ionisation provides enhanced confidence in the identification of terpenoids, while the comparison of hop varieties is simplified by near-real-time analysis in the accompanying software package.
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Application Note 536: Highly sensitive aroma-profiling of cantaloupe melon by TD–GC–TOF MS
This Application Note shows how a method based on grab-sampling, thermal desorption (TD), gas chromatography (GC) and time-of-flight mass spectrometry (TOF MS) can be used to elucidate the key volatiles from cantaloupe melon, and how these vary with size of the melon pieces. Specifically, it focuses on the sensitivity enhancement offered by the use of the TD-100™ thermal desorber and the BenchTOF-HD™ mass spectrometer, and highlights how such analytical information will be of value in efforts to improve food flavour, understand shelf life, and detect microbial contamination.
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Application Note 537: Comprehensive insights into tobacco smoke constituents using TD–GC×GC–TOF MS with Tandem Ionisation
This Application Note demonstrates the enhanced separation and unparalleled sensitivity that can be achieved in the characterisation of cigarette smoke, using thermal desorption (TD) and GC×GC with BenchTOF time-of-flight mass spectrometry, aided by Tandem Ionisation for simultaneous acquisition of hard and soft EI data.
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Application Note 538: Detailed characterisation of essential oils by flow-modulated GC×GC–TOF MS with Tandem Ionisation
In this Application Note, we describe the use of comprehensive two-dimensional gas chromatography (GC×GC) with BenchTOF time-of-flight mass spectrometry (TOF MS) and Tandem Ionisation for characterisation and comparison of the composition of essential oils, aiding rigorous quality control.
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Application Note 541: Confident screening of essential oils by GC–TOF MS with Tandem Ionisation
This Application Note investigates the use of GC with BenchTOF time-of-flight mass spectrometers to fragrance-profile three essential oils (ginger, wintergreen and rosemary). Confident identification and streamlined data-processing is achieved by virtue of the reference-quality mass spectra from BenchTOF and deconvolution of closely-eluting peaks using TOF-DS software, while Tandem Ionisation allows discrimination between isomeric terpenoids by allowing hard and soft EI data to be acquired simultaneously across all peaks in a single run.
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UK
UK
Markes International Ltd
Gwaun Elai Medi-Science Campus
Llantrisant
RCT
CF72 8XL, UK
Tel: +44 (0)1443 230935
USA (East)
USA (East)
Markes International, Inc
11126-D Kenwood Road
Cincinnati
Ohio 45242
USA
Tel: 866-483-5684 (toll-free)
USA (West)
USA (West)
Markes International, Inc
2355 Gold Meadow Way
Gold River
California 95670
USA
Tel: 866-483-5684 (toll-free)
Germany
Germany
Markes International GmbH
Schleussnerstrasse 42
D-63263 Neu-Isenburg
Frankfurt
Germany
Tel: +49 (0)6102 8825569
Part of Schauenburg International
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