Search Results

11 results

  1. CORESTA Congress, Online, 2020, Agronomy/Phytopathology Groups, AP 12

    Reducing nicotine in Burley tobacco by combining low alkaloid varieties and agronomic practices – a very different second year

    FISHER A.M.; FISHER C.R.; JI Huihua
    University of Kentucky, Lexington, KY, U.S.A.
    In 2018, we did a study to test whether nicotine levels of 0.3 - 0.5 mg/g could be achieved if the currently available low alkaloid (LA) varieties were grown using all agronomic practices that are known to lower nicotine. One standard variety, TN...
  2. TSRC, Tob. Sci. Res. Conf., 2019, 73, abstr. 052

    Relationship of alkaloids, PON, TSNAs, nitrate and nitrite: a two-year field analysis

    WU YING; JI HUIHUA; JACK FISHER A.; FANNIN F.; CHATTOPADHYAY N.; BUSH L.
    University of Kentucky, Lexington, KY, USA
    Tobacco-specific nitrosamines (TSNAs) are a class of nitrosamines that are included in the FDA’s Harmful and Potentially Harmful Constituents (HPHC) list. Two of these, Nʹ-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone...
  3. TSRC, Tob. Sci. Res. Conf., 2018, 72, abstr. 095

    Characterization of microbial communities associated with three smokeless tobacco reference products and correlation with chemical characteristics

    MOE L.; GREENHUT I.; JI Huihua
    University of Kentucky, Lexington, KY, USA
    Our first objective is to characterize microbial community composition associated with loose leaf chewing tobacco, American Snus and Swedish Snus smokeless tobacco reference products (STRP) as part of the Center for Tobacco Reference Products at the...
  4. TSRC, Tob. Sci. Res. Conf., 2018, 72, abstr. 111 (also presented at CORESTA 2018)

    Characterization and certification of smokeless tobacco reference products

    SLONE S.; CANETE S.; JI Huihua; JACK A.M.; BUSH L.P.; CHAMBERS O.; SHELTON B.
    University of Kentucky, Lexington, KY, USA
    The constituents of raw tobacco products are naturally variable, and product design, the manufacturing process and the evolving science of tobacco analytics may increase this variability. The call for certified tobacco reference materials and their...
  5. 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....