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, Krakow, 2007, AP 04 GMO and non-GMO approaches to down-regulating nicotine demethylase to develop tobacco with very low nicotine conversion rates XU DONGMEI; SHEN YANXIN; NIELSEN M.T. GenApps Inc., Winchester, KY, USA Blocking or down-regulating the conversion of nicotine to nornicotine is a major strategy for preventing the formation of N'-nitrosonornicotine (NNN), a tobacco specific nitrosamine formed by microbial action during tobacco curing and processing....
CORESTA Meeting, Agronomy/Phytopathology, Santa Cruz do Sul, 2005, A 11 Identification of a tobacco nicotine converter gene - a novel cytochrome P450 enzyme XU Dongmei; NIELSEN M.T.; SHEN Yanxin; CUI Mingwu GenApps Inc., Winchester, KY, USA Nicotine in tobacco may be demethylated to form nornicotine, a precursor to N'-nitrosonornicotine which is one of the tobacco specific nitrosamines formed by microbial action during curing and subsequent leaf storage and processing. We employed a...
CORESTA Meeting, Agronomy/Phytopathology, Suzhou, 1999, AP50 Tobacco hybrids: a growing trend NIELSEN M.T.; WEISS E. GenApps Inc., Lexington, KY, USA Male-sterile hybrids of flue-cured and burley tobaccos are becoming increasingly common throughout many of the world's larger tobacco production areas. Grower and industry demands for disease resistant genotypes with acceptable leaf quality traits...