TSRC, Tob. Sci. Res. Conf., 2022, 75, abstr. 00 (Symposium) Changes in the tobacco industry: 75 years of TSRC WILLIAMSON F. Global Laboratory Services, Wilson, NC, USA Abstract not available....
TSRC, Tob. Sci. Res. Conf., 2019, 73, abstr. 058 USP elemental impurities: limit test for metals in nicotine by ICP-MS LOTFI H.; ARROYO M. Global Laboratory Services, Wilson, NC, USA Nicotine included in e-cigarette formulations usually originates as a 90%+ solution, which is purified further prior to use. While the FDA oversees the tobacco industry, there is currently little regulation regarding the quality of raw materials or...
TSRC, Tob. Sci. Res. Conf., 2018, 72, abstr. 109 An improved method for the determination of sodium propionate in tobacco products WILLIAMSON F.; BAILEY J. Global Laboratory Services, Wilson, NC, USA Sodium propionate is a preservative with fungicidal properties that is often added to tobacco, primarily smokeless tobacco products, to prolong shelf life. Several regulatory agencies, including Health Canada and ANVISA, require the testing of sodium...
CORESTA Meeting, Agronomy/Phytopathology, 2015, Izmir, Turkey, AP 32 CPA residue levels in consecutive C48 cases of Oriental tobacco WESTBERG H.; SPENCER A. Global Laboratory Services, Wilson, NC, U.S.A. Crop protection agents (CPA) can be applied to tobacco at various stages of the production cycle and if CPA residues are present in the product, they can be topic of concern. After tobacco is processed it is normally packed into cases or bales for...
TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 48 Method development and validation of selected metals in e-liquid samples BROWN J. Global Laboratory Services, Inc., Wilson, NC USA Over the past several years, the use of electronic cigarettes and devices has increased. Analysis of Harmful and Potentially Harmful Constituents is at a forefront in both the conventional and electronic cigarette industries. The analysis of various...
TSRC, Tob. Sci. Res. Conf., 2013, 67, abstr. 08 Comparison of auto analyzer methods: discrete vs continuous flow. THURSTON D. Global Laboratory Services, Inc., Wilson, NC, USA Chloride, Sugar, Alkaloids, and Nitrate results were compared using a discrete analyzer and a continuous flow auto analyzer. The new generation discrete analyzers are more automated than the continuous flow auto analyzers. In our initial assessment,...
TSRC, Tob. Sci. Res. Conf., 2009, 63, abstr. 10 TSNA method comparison using UHPLC-MS/MS MATHIS J.A.; PO YING YEUNG Global Laboratory Services, Wilson, NC, USA. Method development and optimization was performed for the quantification of tobacco specific nitrosoamines (TSNAs) in tobacco leaf. The objective was to shorten run time and compare the new method to the previous method. The evaluation of method...
Bull. Spec. CORESTA Symposium, Kallithea, 1990, p. 85, ISSN.0525-6240 Pesticide application on tobacco MATTHEWS G.A. International Pesticide Application Centre Silwood Park, Sunninghill, Ascot, Berkshire, UK Application of insecticide and fungicide sprays on tobacco is often inefficient despite the use of high volumes as deposition is poor at sites occupied by the pest or pathogen. The size, shape, position and growth of the tobacco leaves need to be...
Tob. Sci., 1963, 7-20, p. 93-96, ISSN.0082-4623 Changes in the nitrogenous constituents of burley tobacco during curing and aging PALMER J.K. Virginia Institute for Scientific Research, Richmond, Virginia USA Extensive protein hydrolysis occurred during the first week of curing Burley tobacco on the stalk. The products of protein hydrolysis apparently migrated into the stalk as there was a loss of 30% in total nitrogen and no accumulation of ammonia,...
Tob. Sci., 1957, 1-32, p. 138-142, ISSN.0082-4623 Protein changes during curing of burley tobacco, and pectin methylesterase of cured leaf POGELL B.M.; MOSELEY J.M.; LIKES C.J.; KOENIG D.F. American Tobacco Company Research Laboratory, Richmond, Virginia USA; Virginia Institute for Scientific Research, Richmond, Virginia USA Ultracentifugal studies of the soluble protein of burley tobacco leaves indicate that the rapidly sedimenting, high molecular weight component disappears quickly during curing. Whereas the remaining nondialyzable fraction, which includes pectin...