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...
Tob. Sci., 1972, 16-31, p. 101-103, ISSN.0082-4523 A thin-layer chromatographic method for tobacco lipid analysis WOOLLEN B.H.; IRVINE W.J.; BROWN P.W.; JONES D.H. Carreras Limited , Research Division, Nevendon Rd., Basildon, Essex, England A method is described for the separation by thin-layer chromatography of the major lipids found in the hexane extract of tobacco. The components are separated by stepwise development in three different solvents and visualized by spraying with...
Tob. Sci., 1970, 14-26, p. 91-94, ISSN.0082-4623 A study of anatomical structure and lipid composition of Virginian type tobacco grown in an arid environment BROWN P.W. Carreras Limited, Research Division, England Anatomical studies of flue cured tobacco produced from plants grown in arid environmental conditions have shown that certain types of leaf exhibited a disorganized macrostructure particularly in the palisade mesophyll. On examination of the crop in...
Tob. Sci., 1959, 3-24, p. 103-108, ISSN.0082-4623 Some aspects of polyphenols of tobacco REID W.W. Research Department, Carreras, Ltd., London, England 1. Two of the products of the polyphenolase oxidation of chlorogenic acid occur in flue-cured tobaccos. 2. Chlorogenic acid and rutin may be estimated by chromatography and spectrophotometry or by paper chromatography followed by conversion of the...