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,...
CORESTA Meeting, Agronomy/Phytopathology, 2011, Santiago, APOST 08 Clone of glycine-rich RNA-binding proteins genes from different tobacco germplasm resources and expression analysis under different abiotic stresses ZHANG Qi(1); CHEN Jing-yun(1); LI Wen-zheng(2); CHEN Xuan(1); LIU Jian-ming(1) (1) Shanxi Kunming Tobacco Co. Ltd, Taiyua, P.R China; (2) Yunnan Tobacco Research Institute, Yuxi, P.R China Glycine-rich RNA-binding proteins (GR-RBPs) play important roles in the post-transcriptional regulation. In this paper, 11 GR-RBPs genes (RGP-3) were isolated and sequenced from different tobacco varieties including cultivated tobacco and wild...
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, Rovinj, 2009, APPOST 18 Molecular characterization of the panB gene in a nicotine-degrading strain of Pseudomonas putida LEI Liping; WEI Hailei; XIA Zhenyuan; LIU Shuo; LIU Xingzhong Yunnan Tobacco Science Research Institute, Yuxi, Yunnan, China. A nicotine-sensitive mutant was generated from the nicotine-degrading bacterium, Pseudomonas putida strain J5, by mini-Tn5 transposon mutagenesis. This mutant was unable to grow with nicotine as the sole carbon source but could grow with glucose....
CORESTA Meeting, Agronomy/Phytopathology, Rovinj, 2009, APPOST 12 Accumulation and distribution of different sources of nitrogen and their effects on quality of flue-cured tobacco WANG Shuhui; GU Haihong; LI Tianfu; LI Zhihong; JIAO Yongge; LIU Hongbin Yunnan Tobacco Science Research Institute, Yuxi, Yunnan, China. Accumulation of dry matter, absorption and distribution of fertilizer nitrogen and soil nitrogen and the effects of fertilizer nitrogen and soil nitrogen on quality of flue-cured tobacco leaves were studied by 15N-labelled field trial on paddy soil....