Search: Odours

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Direct Thermal Analysis of Solids – A Fast Method for the Determination of Halogenated Phenols and Anisoles in Cork

Off-flavours in solid samples often cause analytical problems due to the necessity of sample pre-treatment steps such as time consuming extractions followed by reconcentration of the resulting extracts and th ...

Resource - Susan Gilbert - 14th Apr 2011 - 0 comments

Evaluation of PDMS-Based Extraction Techniques and GC-TOFMS for the Analysis of Off-Flavor Chemicals in Beer

Various techniques employing polydimethylsiloxane (PDMS) as an extraction medium prior to GC-TOFMS analysis were investigated to measure off-flavors in aged beer. The techniques included stir bar sorptive ex ...

Resource - Susan Gilbert - 14th Apr 2011 - 0 comments

Determination of Off-Odor Components in Fish Oil

Customer interested in a system that can be used to determine the Fast index (Roche) for fish oils in either ethyl ester, microencapsulated or triglyceride form. This requires determination of 4-hepten-1-al, ...

Resource - Susan Gilbert - 26th Jan 2011 - 0 comments

Determination of Flavor and Off Flavor Compounds in Dairy Products using Stir Bar Sorptive Extraction (SBSE) and Thermal Desorption GC/MSD/PFPD

The analysis of flavour compounds in dairy products such as milk, cream, yoghurt and cheese as well as their blends with several ingredients usually requires cumbersome sample preparation steps such as liquid ...

Resource - Susan Gilbert - 25th Jan 2011 - 0 comments

Corkiness in Wine – Trace Analysis of 2,4,6-Trichloroanisole by Stir Bar Sorptive Extraction (SBSE) and Thermal Desorption GC/MS

2,4,6-Trichloroanisole (TCA) is well known as being the main cause for corkiness in wine. Its extremely low odour threshold usually mandidates enrichment and concentration steps before it is available for pre ...

Resource - Susan Gilbert - 7th Jan 2011 - 0 comments

Efficient Multidimensional GC Analysis of Complex Samples Using Low Thermal Mass Column Modules

Analysts often encounter complex real-world sample types such as petroleum fractions or volatile polymer components. Resolving all individual compounds using a single chromatographic separation can be quite ...

Resource - Susan Gilbert - 9th Sep 2010 - 0 comments

Increased Sensitivity of Odour Compounds by Headspace Analysis

The GERSTEL Dynamic Headspace (DHS) sampler enables significantly greater levels of sensitivity for headspace analyses. This is of value to analysts working with odour compounds since the odour threshold of ...

Resource - admin - 9th Sep 2010 - 0 comments