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At CSS Analytical Inc. we're trying something new this year at Pittcon. In years past we have gone the traditional route of setting up a booth and chatting with you as you try and get around to the whole show. At best it makes our visits fragmented and lacking in the very thing that we strive for at CSS, specialized personal attention. We know that you have specific needs and questions about our products that you want answered. Scott Niemann, president of CSS Analytical Inc., has set up a special PITTCON hotline so that you can meet with him directly at the show. Don't worry about making it to our booth this year because we won't have one! Get comfortable where you are and let us come to you!
Scott will be out on the floor talking with customers and colleges and taking personal meetings to discuss our products, upgrade solutions and our new prepaid technical support package.
To set up a personal meeting please call 800-277-5455 and speak with Scott directly. He will be happy to stop by your booth or meet you on the convention floor to discuss your needs.
See you at PITTCON!
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CSS Analytical Poster Contributions:
Sunday Poster - Analysis of Antioxidant Polyphenolics in Medicinal Plants by GC/MS and LC/EI/MS An investigation into the medicinally active and chemical constituents of prairie plants utilized by the Plains Indians has been undertaken in our laboratories. We have been able to identify the volatile constituents obtained by steam distillation by GC/MS. Several of these have previously been recognized as possessing medicinal activities, but cannot account for all of the purported activities of these plants. The GC/MS is of limited utility with regards to separating the water-soluble highly polar constituents. The polar constituents are of interest since Plains Indians frequently made teas or other preparations utilizing aqueous extractions. The development of a LC/EI/MS method was undertaken in an attempt to provide a more efficient method of separating and direct method of identifying the constituents. In LC/EI/MS, effluent from an HPLC is introduced into an Electron Impact Ionization source giving typical EI Spectra that can be searched on a common mass spectral library. The identification of several constituents was achieved under these ionization conditions. The polar compounds of interest belonged to the flavinoid, lignan, and other polyphenolic compound classes. The pharmacological activities of several of the compounds found in the plants have been linked to their medicinal uses by the Plains Indians. This method of analysis lends itself readily to the identification of water-soluble constituents from plant materials.
Monday Poster - Application of LC/ESI/MS and LC/EI/MS to the Characterization of Tannins and Flavonoids from the Acorns of Quercus Macrocapra
Hydrolyzable and condensed tannins are representatives of a large group of polyphenolic compounds found in plants. There is great speculation as to the importance and function of these compounds in plant-predator relationships. The identification and characterization of these molecules from plant materials could greatly increase the likelihood of elucidating a role and mechanism of action. The development of a LC/ESI/MS method coupled with diode array detection was undertaken in an attempt to provide a more efficient method of separating and direct method of identifying the constituents. The chromatographic separation method was subsequently utilized in LC/EI/MS. In LC/EI/MS effluent from an HPLC is introduced into an Electron Impact Ionization source giving typical EI Spectra that can be searched on a common mass spectral library. Each method yields different fragmentation patterns, but in combination provide additional information of a complementary nature for structural elucidation. |
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