Search Results

26 results

  1. TSRC, Tob. Sci. Res. Conf., 2019, 73, abstr. 086

    Determination of tobacco alkaloids in consumer products by UPLC-MS/MS using a modified quechers method

    SHIFFLETT J.R.; WITTENBERG J.B.; BEZABEH D.Z.
    Alcohol and Tobacco Tax and Trade Bureau, Beltsville, MD, USA
    The U.S. Alcohol and Tobacco Tax and Trade Bureau (TTB) is responsible for collecting Federal excise taxes on tobacco products. Tobacco products in the U.S. may fall into several taxable categories including cigars, cigarettes, snuff, chewing...
  2. TSRC, Tob. Sci. Res. Conf., 2017, 71, abstr. 061

    Simultaneous determination of tobacco alkaloids, tobacco specific nitrosamines, and solanesol in consumer products using UPLC-ESI-MS/MS

    SHIFFLETT J.R.; WATSON L.; McNALLY D.J.; BEZABEH D.Z.
    U.S. Treasury Department, Alcohol and Tobacco Tax and Trade Bureau, Beltsville, MD, USA
    The U.S. Alcohol and Tobacco Tax and Trade Bureau (TTB) is responsible for collecting Federal excise taxes on tobacco products. Tobacco products in the U.S. may fall into several taxable categories including cigars, cigarettes, snuff, chewing...
  3. TSRC, Tob. Sci. Res. Conf., 2017, 71, abstr. 074

    The enantiomeric composition of N'-nitrosonornicotine in air-cured tobacco influenced by nicotine demethylation

    CAI Bin(1); JI Huihua(2); FANNIN F.F.(2); BUSH L.P.(2)
    (1) Guizhou Academy of Tobacco Science, Guiyang City, China; (2) University of Kentucky, Lexington, KY, USA
    N'-nitrosonornicotine (NNN) is a potent and organ-specific carcinogen found in tobacco and tobacco smoke in substantial amounts. The aim of this study was to investigate the variations in NNN enantiomeric composition in nicotine demethylase mutants....
  4. TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 101

    Quantitative proteomics analysis the tobacco trichomes under cadmium stress

    FU Qiang; LIN Shifeng; ZOU Jie; YU Jing; ZHANG Xiaolian; REN Xueliang
    Guizhou Academy of Tobacco Sciences, Guiyang City, Guizhou, P.R. China
    Nicotiana tabacum (tobacco) is known to both accumulate and tolerate high levels of heavy metals from polluted soils, its trichomes appeared to be the excretion of toxic metals in the form of inorganic particles To gain a comprehensive understanding...
  5. TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 106

    Photosynthetic and growth characteristics of flue-cured tobacco seedlings in well-cellar style transplanting

    LIN Yechun; CHEN Wei; GAO Weichang; CHEN Yi; DING Fuzhang; LI Hongxun; LIANG Guilin; PAN Wenjie
    Guizhou Academy of Tobacco Sciences, Guiyang City, Guizhou, P.R. China
    The well-cellar style transplanting (WCST), widespread in China, was an original transplanting method of flue-cured tobacco, and had obvious advantages when compared to conventional transplanting (CT). WCST accelerated the growth of tobacco...
  6. TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 93

    Transcription factor NtPIF1 interacted with NtRAP2.2 to negatively regulate expression of NtPSY

    LEI Bo; DING Fuzhang; ZHAO Huina; CAI Kai; PAN Wenjie; CAI Bin
    Guizhou Academy of Tobacco Sciences, Guiyang City, Guizhou, P.R. China
    Carotenoids are important secondary metabolites in flue-cured tobacco. Phytoene synthase (PSY) is the first specific enzyme in the carotenoid biosynthesis pathways, because of its crucial regulatory role of PSY in the carotenoid pathway, the PSY...
  7. TSRC, Tob. Sci. Res. Conf., 2014, 68, abstr. 30

    Application of TILLING technology to screen for mutations in the tobacco glycosyltransferase gene NtGt1a

    FU Qiang; ZOU Jie; ZHANG Jishun; LIN Shifeng; YU Jing; GUO Yushuang; ZHANG Xiaolian; YU Shizhou; ZHAO Jiehong; REN Xueliang
    Guizhou Academy of Tobacco Science, Guiyang, Guizhou, China
    Targeting Induced Local Lesions IN Genomes (TILLING) combines chemical mutagenesis with high throughput screening to allow for the generation and detection of mutant alleles in selected genes. In this study, TILLING has been applied to produce a...
  8. TSRC, Tob. Sci. Res. Conf., 2014, 68, abstr. 88

    The influence of main chemical constituents and tobacco leaf stalk position on seven endogenous harmful components in mainstream cigarette smoke

    GENG Zhaoliang; ZHANG Jie; GE Yonghui; XIANG Zhangmin; CAI Kai; FENG Yonggang
    Guizhou Academy of Tobacco Sciences, Guiyang, China
    In order to study the influence of main chemical constituents and leaf stalk position in flue-cured tobacco on seven endogenous harmful components in mainstream cigarette smoke, flue-cured tobacco samples were collected and analyzed from five...
  9. TSRC, Tob. Sci. Res. Conf., 2014, 68, abstr. 89

    Sensitivities of Ralstonia solanacearum to four non-target agronomic chemicals and its metabolic reaction under chemical pressures

    WANG Hancheng; WANG Maosheng
    Guizhou Academy of Tobacco Sciences, Guiyang, China
    Tobacco bacterial wilt caused by Ralstonia solanacearum is one of the most destructive diseases suffered by tobacco in China. Streptomycin, calcium oxide, mancozeb, and synthetic fertilizer are four important non-target chemicals used frequently...