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53 results

  1. 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. ...
  2. TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 90

    Effect of artificial ordering on TSNAs during short term storage

    FISHER C.R.(1); JACK A.M.(1); BUSH L.P.(2); PEARCE B.(2)
    (1) KTRDC, University of Kentucky, Lexington, KY USA; (2) Plant and Soil Sciences, University of Kentucky, Lexington, KY USA
    Production guidelines caution burley tobacco growers against using water sprays to bring tobacco into case and storing high-moisture tobacco because of concerns that these practices can lead to the accumulation of TSNAs. A series of experiments over three ...
  3. 46th TWC, Tob. Work. Conf., 2014, abstr. 12

    The effect on TSNAS of cutting and housing wet tobacco

    JACK A.M.; FISHER C.R.; JI H.; BUSH L.P.
    Kentucky Tobacco Research & Development Center, University of Kentucky, 202B KTRDC Building, Lexington, KY 40546, USA
    The objective of this study was to test our recommendation to growers not to cut or house wet tobacco. The design was a split-split plot, with two cutting treatments, (1) cut wet (2) cut dry; four housing treatments, (1) protected indoors on a railwagon, ...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2013, Brufa di Torgiano, AP 28

    Changes in TSNA contents during tobacco storage and the effect of temperature and nitrate level on TSNA formation

    SHI Hongzhi(1); WANG Ruiyun(1); BUSH L.P.(2); ZHOU Jun(3); FANNIN F.F.(2); BAI Ruoshi(3); YANG Huijuan(1)
    (1) Henan Agricultural University, National Tobacco Cultivation & Physiology & Biochemistry Research Center, Zhengzhou, P.R. China; (2) University of Kentucky, Lexington, KY, U.S.A.; (3) Beijing Cigarette Factory of Shanghai Tobacco Group, Beijing, P.R. China
    Samples of Burley, sun-cured and flue-cured tobacco from the main producing areas of relevant tobacco types in China were collected to study the changes in tobacco-specific nitrosamine (TSNA) contents during storage and to investigate the effect of ...
  5. CORESTA Congress, Sapporo, 2012, Agronomy/Phytopathology Groups, AP 09

    TSNA accumulation in three Burley varieties under three curing regimes

    JACK A.M.; FISHER C.R.; SCHOERGENDORFER A.; JI H.; FANNIN F.F.; BUSH L.P.
    University of Kentucky, Lexington, KY, USA
    Previous work showed that NCBH 129LC had higher accumulation of tobacco specific nitrosamines (TSNAs) than KT 204LC when cured on a wagon covered with plastic; conditions very favorable for TSNA accumulation. However, other researchers found that when the ...