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...
CORESTA Meeting, Agronomy/Phytopathology, Montreux,1997, AP34 Effects of calcareous soil acidification on quality improvement of flue-cured tobacco WEI C.; AI S.; TIAN J. Shanxi Provincial Institute of Tobacco, Xi'an, Shanxi, China. The variations of soil nutrition in tobacco root zone and tobacco quality were studied in a pot cultivation experiment after the calcareous soil was irrigated with acidified water. The results showed that irrigation with acidified water 15 days...
Bull. Spec. CORESTA Congress, Harare 1994, p. 109, P 25 Strategies to confer higher resistance to viruses : Introduce different resistant genes into a same transgenic plant WU Z.X.; YIE Y.; ZHANG T.Q.; WANG S.Y.; YAO G.H.; PO TIEN Henan Agricultural Academy, Institute of Tobacco, Xuchang, China. Plants transformed with a viral coat protein (CP) gene or Satellite (Sat) RNA gene or replicase gene (such as TMV 54kDa gene) proved to be resistant to virus. However, the efficiency of these transgenic plants was demonstrated to have limitations...
Bull. Spec. CORESTA Congress, Harare 1994, p. 147, PPOST 20 Transfer of resistance to Alternaria alternata in tobacco by foreign DNA introduction WU Z.X.; ZHANG T.Q.; YAO G.H. Henan Agricultural Academy, Institute of Tobacco, Xuchang, China. The tobacco brown spot disease, caused by the infection of Alternaria alternata, is one of the most widespread diseases in almost the whole tobacco-producing areas in China. To transfer the resistance to Alternaria alternata of an economically...