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11 results

  1. TSRC, Tob. Sci. Res. Conf., 2017, 71, abstr. 123

    The regulation of microorganism on the formation of TSNAs in tobacco

    ZOU Congming; XIA Zhenyuan; LEI Liping; HUANG Wei; ZHAO Gaokun; JIN Yan; WU Qun
    Yunnan Academy of Tobacco Agricultural Sciences, Kunming, China
    TSNAs in tobacco are directly approved to be the carcinogens which is getting more and more attention than before. The regulation of TSNAs is becoming one of the most important topics of tobacco harm reduction. It has been shown that TSNAs formation...
  2. TSRC, Tob. Sci. Res. Conf., 2014, 68, abstr. 87

    Increased endogenous potassium-enhanced nicotine accumulation and sugar decomposition in flue-cured tobacco leaves

    ZHAO Jiehong; YU Jing; GU Yushang; LIN Shifeng; ZOU Jie; FU Qiang; ZHANG Xiaolian; YU Shizhou
    Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Sciences, Guiyang P.R.China
    In order to increase endogenous potassium levels in tobacco leaves, an expression vector was constructed for the HAK1 gene (putative high-affinity potassium transporter) of Nicotiana tabacum driven by the rbcS gene promoter. HAK1-overexpressing...
  3. TSRC, Tob. Sci. Res. Conf., 2011, 65, abstr. 52

    Puff-resolved on-line real-time analysis and quantification of tobacco smoke components by a commercial smoke profiler (smoking machine - photo-ionization TOF mass spectrometer system).

    ZIMMERMANN R.(1); ROSE N.(2); WALTE A.(3); SARAJI-BOZORGZAD M.(3); BENTE M.(3); GROEGER T.(4); ESCHNER M.(4)
    (1) University of Rostock, Germany; (2) Borgwaldt KC, Hamburg, Germany; (3) Photonion GmbH, Schwerin, Germany; (4) Helmholtz Zentrum, Mnchen, Germany
    Recently, laser based photo-ionization mass spectrometry has been successfully coupled to smoking machines, allowing the puff-resolved on-line analysis of volatile and semi-volatile tobacco smoke constituents[1]. The introduction of special...
  4. TSRC, Tob. Sci. Res. Conf., 2011, 65, abstr. 53

    Detection of the molecular composition of pyrolysis gases in thermal analysis (TA) using photo ionization tof mass spectrometry for Evolved Gas Analysis (EGA): instrumental set-up and first results on tobacco and cigarettes materials.

    ZIMMERMANN R.(1); SARAJI-BOZORGZAD M.(2); BENTE M.(2); WALTE A.(2); ESCHNER M.(3)
    (1) University of Rostock, Germany; (2) Photonion GmbH, Schwerin, Germany; (3) Helmholtz Zentrum Mnchen, Germany
    Evolved Gas Analysis (EGA) in Thermogravimetry (TG) by mass spectrometry (MS) is a powerful technology for analysis of thermal degradation products from organic materials such as polymers, bio mass, paper or tobacco. TG-MS with electron ionization...