In this application note four PDMS based sorptive extraction methods, including SPME, SPME Arrow, SBSE and SA-SBSE are compared for the extraction of model aroma compounds from water and for aroma profiling of roasted green tea. The comparison was made using the same samples and keeping the analytical conditions constant for all techniques.

Non-alcoholic (NA) wines and spirits are becoming increasingly popular, just like NA beers. Unlike beer, these beverages present greater challenges for alcohol removal due to their higher starting alcohol concentrations. As a result, preserving the volatile organic compounds (VOCs) is more difficult, which contributes to the desired flavors of these beverages. To characterize the VOCs and sensory profiles of alcoholic and NA wines and spirits, this study employs a simultaneous immersion technique with GERSTEL’s Twister and thin film-solid phase microextraction (TF-SPME) devices.

The dietary supplements market is valued at over 150 billion dollars (U.S.) worldwide. Dietary supplements are manufactured products that come in many forms, such as pills, capsules, powders, liquids, or tablets. They are used to supplement a person’s diet. The nutrients can be synthetic or extracted from natural sources. Many of these products contain flavoring agents, making them more palatable.

Methylene chloride has long been used in industry, academia and has been one of the primary extraction solvents for environmental applications. In recent years, the US EPA has issued several risk assessments and regulations regarding the use of methylene chloride.

Fragrance-free is an increasing trend in personal care products. Consumers gravitate towards these products due to allergies, sensitivities, medical conditions, maintaining a neutral work environment, and avoiding overpowering scents. When these products contain off-odors, they become much more apparent to the consumer since there is no other fragrance to mask them, resulting in complaints and brand damage. This study used thin film-solid phase microextraction (TF-SPME) in a sensory directed analysis (SDA) approach to extract off-odor compounds from fragrance-free, makeup-removing face wipes.

Mineral oil contaminants in food can originate from a variety of sources, from contamination of the crop environment to machine oils from harvesting and production machinery to contaminated packaging and materials that come into contact with food.
Since mineral oil-saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH) pose a risk to human health, they need to be monitored in all types of food.

Contaminations in foods and beverages can cause serious health problems and are a growing concern in modern society. In recent years, contamination with mineral oil hydrocarbons shifted into public focus, and also gained attention in legislation and standardization. Mineral oil hydrocarbons, especially aromatic hydrocarbons, can pose serious health risks and include many carcinogenic compounds.

This study focuses on the automated extraction of small volumes of urine samples (< 500 μL) using disposable pipette extraction (DPX) for the comprehensive screening of pain management drugs by LC-MS/MS.
Using a GERSTEL MPS autosampler, DPX extractions of hydrolyzed urine were performed, using a reversed phase (DPX-RP-S) sorbent. The resulting eluents were diluted and analyzed by LC-MS/MS allowing rapid, “just-in-time” sample preparation for high throughput screenings, averaging an injection to injection cycle time of 7 min/sample.

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Meat substitutes are becoming increasingly important as they represent a sustainable alternative to meat products. The released flavors in the different phases (raw, fried and during the frying process) are crucial for the success of the product. The aim of this project is to identify the released flavors in these phases using dynamic headspace gas chromatography-mass spectrometry (DHS-GC-MS).
The present study examines commercially available burger patties from various manufacturers.

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DIN 38407-27 is a German standard method for the examination of water, wastewater and sludge for the determination of selected phenols in groundwater and leachate, aqueous eluates and percolates [1].
After derivatization of the analytes with acetic anhydride to their corresponding acetates and subsequent liquid-liquid extraction, the determination is carried out using gas chromatography/mass spectrometry (GC-MS).
For this application liquid-liquid extraction has been replaced with stir bar sorptive extraction (SBSE) using the GERSTEL Twister.

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