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37 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2011, Santiago, AP 03

    Lowering TSNAs through nitrite reductase activity

    DAVENPORT S.E.; FORSYTH K.; TULLY L.; LISTER R.; LE LAY P.; MAUNDERS M.; SANCHEZ-TAMBURRINO J.P.
    Advanced Technologies Ltd., Cambridge, UK (holding of British American Tobacco Ltd.)
    Tobacco specific nitrosamines (TSNAs) are compounds in tobacco that have been shown to be carcinogenic. TSNAs are formed by the nitrosation of tobacco alkaloids with the main nitrosating agent believed to be nitrite. High levels of nitrate...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2011, Santiago, AP 13

    Effects of humic acids on the accumulation in tobacco leaves of lead (Pb) and cadmium (Cd) found in different soils

    ZHANG Yanling(1); YANG Xin(2); ZHANG Shixiang(1); TIAN Yangyang(1)
    (1) Zhengzhou 450001 Tobacco Research Institute of CNTC, Zhengzhou 450001, Henan, P.R China; (2) P.R China Tobacco Guangdong Industrial Corporation, P.R China
    Lead (Pb) and cadmium (Cd) are two harmful heavy metals in tobacco leaf that mainly come from soil. To explore a method to reduce lead and cadmium in tobacco leaf, pot cultivation with unpolluted and polluted soil was executed with four main tobacco...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2011, Santiago, AP 27

    Tobacco Biotechnology: a tool for business solutions

    SANCHEZ-TAMBURRINO J.P.; EDWARDS K.; JONES L.; DAVENPORT S.E.
    Advanced Technologies Ltd., Cambridge, UK (holding of British American Tobacco Ltd.)
    Over the past 20 years, genetic modification and molecular breeding has been successfully used in many different crops to provide agronomic advantages (i.e., herbicide resistance, insect tolerance). However there are many other areas where it can be...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2011, Santiago, PPOST 04

    Molecular variation characterization of the genome 5' terminal region of PVY isolated from tobacco in China

    YANG Jun; LUO Zhao-peng; JIN Li-feng; ZHAI Niu; LI Feng; XU Ya-long; ZHOU Hui-na; LIN Fu-cheng
    Zhengzhou Tobacco Research Institute, Zhegzhou, Henan, P.R. China.
    Tobacco viral diseases, of which most are RNA viruses, are a category of infectious diseases that are distributed widely and occur severely. The natural variation (mutation) of tobacco viruses proceed quickly, and cause considerable difficulty for...
  5. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 13

    Determination of tobacco specific N-nitrosamines in smokeless tobacco products by liquid chromatography-tandem mass spectrometry

    YANG Chun-qiang; ZHANG Jie; LI Peng; WANG Yue-xia; ZONG Yong-li; XIE Jian-ping
    Zhengzhou Tobacco Research Institute, Zhegzhou, Henan, P.R. China.
    Tobacco specific N-nitrosamines (TSNAs) are the most abundant carcinogens identified in smokeless tobacco products. The accurate determination of TSNAs is significant to assess the health risk of smokeless tobacco products. A liquid...
  6. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 35

    Cigarette smoke toxicant exposure estimates in smokers switched to reduced toxicant prototype cigarettes

    SHEPPERD C.(1); ELDRIDGE A.(1); McADAM K.G.(1); MARINER D.(1); PROCTOR C.(1); MEYER I.(2)
    (1) British American Tobacco, Group R&D, Southampton, UK; (2) Principal Investigator, Momentum Pharma Services, Hamburg, Germany
    We have conducted a study that addresses the first part of the IOM's definition of a potential reduced-exposure product by analyzing biomarkers of exposure (BoE) in smokers switched to prototype cigarettes which, when measured on smoking machines,...
  7. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 36

    Matrix effects on analysis of multi-pesticide residues in tobacco by LC-MS/MS and GC-MS

    HU Bin(1); YAN Hui-hui(2); MA Hai-ming(2); XIE Fu-wei(1); LIU Hui-min(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R.China; (2) Dept. of Chemistry, Zhengzhou University, Zhengzhou 450001, P.R. China
    A fast and easy multi-pesticide residue analyzing method for 73 and 19 pesticides in tobacco by LC-MS/MS and GC-MS respectively was introduced. The matrix effects and the deviations of detecting results were discussed as the main points of this...
  8. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 38

    Application of thermal time model in studying changes of aroma components in cigarettes during storage

    ZHAI Yu-jun(1); TIAN Cheng(1); YU Ling(2); ZHU Xian-yue(1); GU Wen-bo(2); REN Wen-li(2); ZHAO Bin(1); CHEN Chao-yin(2); LUO Deng-shan(3)
    (1) Technical Center, Gansu Tobacco Industrial Co. Ltd., Lanzhou 730050, P.R China; (2) Technical Center, Shanghai Tobacco (Group) Corporation, Shanghai 200082, P.R China. (3) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    Thermal time is adopted to research the relationship of plant growth with climate, etc. A thermal time linear regression model for studying the changes of aroma components in cigarettes was developed based on the effects of different storage...
  9. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 40

    Research on relationship of thermal conductivity, thermal diffusivity, volume thermal capacity of cut tobacco with temperature

    HAN Ying(1,2); YAN Ya-Ming(2); MOU Ding-Rong(1); DONG Wei(1); GONG Rong-Gang(1); LIU Chao-Xian(2); LU Duan-Feng(2); LI Bin(2)
    (1) Hongta Tobacco (Group) Co., Ltd., Yuxi 653100, Yunnan, P.R China; (2) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R China
    The thermal properties of cut tobacco, such as thermal conductivity, thermal diffusivity and volume thermal capacity, are essential to the analysis of heat and mass transfer in various conditions of tobacco processing. The thermal properties of cut...