Elemental profiles of whiskies allow differentiation by type and region by inductively coupled plasma –optical emission spectroscopy (ICP-OES)
Poster Dec 05, 2017
Greg Gilleland, Jenny Nelson, Helene Hopfer, Roger Boulton, & Susan E. Ebeler.
The analysis of the elemental composition of whiskies provides important information whether being used to determine the sample origin or understanding how different whiskey styles are caused by processing equipment and raw materials. Therefore, profiling whiskies for trace elements could be a way to define different styles based on their micro-elemental composition. The purpose of this study was to differentiate various whiskey styles by evaluating the elemental composition of Whiskey samples.
Sixty-nine commercial whiskies were selected for this study, including: 33 single malt scotch, 16 Bourbon, 8 Irish, 2 Tennessee, 1 American Rye, and 9 Japanese whiskies. The whiskies varied in age from seven to twenty-seven years, and were analyzed on an Agilent 5100 ICP-OES system by direct dilution. Twenty-eight elements were quantified using matrix-matched calibration standards and the final data analyzed with the Agilent Mass Profiler Professional.
Results showed that the Agilent 5100/5110 ICP-OES is a viable tool for elemental profiling of various types of whiskies. The instrumental design allowed for fast and easy analysis of the samples with low detection limits for each measured element. Analysis of the spikes showed the method was precise and accurate. The preliminary data analysis of the whiskies showed that element compositions could possibly be used to differentiate samples based on age, type, and region. Further research is needed, with collaboration from the industry, to fully understand the degree element profiles can be used in whiskey research.
Nitrogen metabolism in Mycobacterium tuberculosis: a systems-based approachPoster
Previous studies suggested that Mycobacterium tuberculosis obtains nitrogen from a diverse range of intracellular nutrients including amino acids. Here, we use a novel system’s based three-pronged approach to define pathways for uptake and assimilation of nitrogen.READ MORE
IntelliXtract 2.0: Simplified Intelligent Component Extraction and DetectionPoster
*Simplified detection and Component Extraction algorithm from LC-MS and GC-MS datasets
*New improved algorithm based on ion threads
*Reduced number of parameters to select for analysis
*Reduced false positives leading to reduced analysis time
Analysis of Extract Drying Criteria for Oil & Grease Method 1664A/BPoster
Analysis of Extract Drying Criteria for Oil & Grease Method 1664A/BREAD MORE