Search Results

32 results

  1. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, STPOST 24

    Influences of chronic alcohol consumption and critical enzyme regulation on the in vivo metabolism of NNK in mice

    MAO Jian(1); ZHANG Qidong(1); WANG Ronghao(1); LI Chen(1); LIU Shuaidong(2); CHAI Guobi(1); WANG Dingzhong(1); XI Hui(1); LIU Junhui(1); ZHANG Jianxun(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China; (2) Technology Center of China Tobacco Shaanxi Industrial Co., Ltd., Baoji, Shaanxi, P.R. China
    The progressive clarification of influential factors on the in vivo metabolism of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), one of the potent carcinogens in tobacco, could provide valuable information for precisely evaluating the health risk ...
  2. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, STPOST 47

    Effect of ethanol concentration on chemical composition of tobacco extracts

    ZHENG Jianyu(1); LIU Changbo(1); ZHANG Wenjun(1); TENNIER J.(2); FU Yin(1); XIONG Zhen(1); CHEN Shaoquan(1); FENG Tao(1); WANG Yanhong(1); ZHOU Guiyuan(1)
    (1) China Tobacco Schweitzer (Yunnan) Reconstituted Tobacco Co., Ltd, Yuxi City, Yunnan, P.R. China; (2) SWM Intl., Alpharetta, GA, U.S.A.
    Ethanol is widely used as a solvent in the chemical, pharmaceutical, and biological industries, for the extraction of various natural products, including those from tobacco. In this study, an ethanol-water system with four different concentrations of ...
  3. CORESTA Meeting, Smoke Science/Product Technology, 2017, Kitzbühel, STPOST 10

    Methods for characterising morphological and structural variations of cut tobacco in cigarettes during smoking

    WANG Liang(1); YIN Donghong(1); XIE Guoyong(1); LI Bin(2); TAN Xinliang(1); DU Wen(1)
    (1) Hunan Industrial Co., Ltd of CNTC, Research and Development Center, Changsha, Hunan, P.R. China; (2) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China
    The morphological and structural variations of cut tobacco significantly influence the state of a burning cigarette and the formation of smoke constituents. A series of new methods for characterising the micro-structure of cut tobacco, planar structure of ...
  4. CORESTA Meeting, Smoke Science/Product Technology, 2017, Kitzbühel, STPOST 12

    Study on vaporisation temperature of electronic cigarette

    CUI Huapeng; ZHAO Le; FAN Meijuan; LIU Shaofeng; CHEN Li; CAI Junlan; QIN Yaqiong; DING Xue; JIANG Zhicai
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China; (2) China Tobacco Zhejiang Industrial Co., Ltd, Hangzhou, Zhejiang, P.R. China
    The vaporisation temperature of electronic cigarettes (e-cigarettes) affects the release and migration of harmful components in e-cigarettes greatly. Therefore a method for measuring the vaporisation temperature was established based on a thermocouple to ...
  5. CORESTA Meeting, Smoke Science/Product Technology, 2017, Kitzbühel, STPOST 13

    The comparative assessment of e-cigarettes and cigarettes on cytotoxicity and proinflammatory cytokine secretion level using an air-liquid interface system

    HUA Chenfeng; QIAO Liangjun; KANG Yu; ZHAO Junwei; QIN Yaqiong; CUI Huapeng; SHANG Pingping; LIU Huimin; LI Xiang; XIE Fuwei
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China
    Electronic cigarettes (e-cigarettes), as an alternative to combustible cigarettes, have become more and more popular. In this study, the cytotoxic and proinflammatory cytokine secretion response of e-cigarette vapour (e-vapour) and traditional cigarette ...
  6. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, APPOST 25

    Resistance-risk assessment of Phytophthora nicotianae to dimethomorph and fungicide combination development

    MU Wenjun; XUE Chaoqun; XI Jiaqin; HU Liwei; LIU Fang; SONG Jizhen
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China
    Dimethomorph is a carboxylic acid amide (CAA) fungicide with high activity against the tobacco pathogen Phytophthora nicotianae. We investigated the risk that P. nicotianae can develop resistance to dimethomorph and screened the fungicide mixture ...
  7. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, STPOST 26

    A review of aerosol exposure systems relative to the analysis of cytotoxicity: a CORESTA In vitro Toxicity Testing Sub-Group perspective

    THORNE D.(1); WIECZOREK R.(2); FUKUSHIMA T.(3); SHIN H.J.(4); LEVERETTE R.(5); BALLANTYNE M.(6); LI X.(7); BOMBICK B.(5)
    (1) British American Tobacco, R&D Centre, Southampton, U.K.; (2) Reemtsma Cigarettenfabriken GmbH (an Imperial Brands PLC Company), Hamburg, Germany; (3) Japan Tobacco Inc., Scientific Product Assessment Centre, Yokohama, Kanagawa, Japan; (4) KT&G Corporation, Daejeon, South Korea; (5) RAI Services Company, Winston-Salem, NC, U.S.A.; (6) Covance Laboratories Ltd, Harrogate, U.K.; (7) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China
    Aerosol exposure systems offer researchers a variety of ways to customise the exposure set-up, modify experimental parameters and provide a novel and versatile platform for in vitro aerosol research. These systems produce an aerosol that more closely ...
  8. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, STPOST 39

    Estimation of smokers’ mouth level exposure to cigarette smoke with filter analysis method

    CAI Junlan; PENG Bin; WANG Bing; WANG Sheng; ZHAO Ge; YU Jingjing; GUO Junwei; ZHANG Xiaobing; XIE Fuwei
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China
    Part-filter analysis method was used to estimate Chinese smokers' mouth level exposure (MLE) to nine chemical components in cigarette smoke. 1) A series of quantitative analysis methods for determining levels of nicotine, tar, solanesol and six ...
  9. CORESTA Congress, Quebec, 2014, Smoke Science/Product Technology Groups, STPOST 08

    Determination of 16 polycyclic aromatic hydrocarbons in mainstream cigarette smoke by using a graphene coated solid-phase micro extraction (SPME) technique followed by gas chromatography-mass spectrometry (GC/MS)

    WANG Xiaoyu; GUO Jizhao; XIA Qiaoling; DING Li; XIE Fuwei; ZHANG Xiaobing; LIU Huimin; WANG Hongbo
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China
    A new method to determine the levels of 16 polycyclic aromatic hydrocarbons (PAHs) in mainstream cigarette smoke simultaneously and rapidly was developed. The method used SPME-GC/MS, wherein an in-house prepared graphene-coated fibre was used in SPME. ...
  10. CORESTA Meeting, Smoke Science/Product Technology, 2013, Seville, STPOST 07

    Smoking puff ratio of cigarettes and its determination method

    WANG Zhiguo(1); ZHANG Xiaobing(2); LIU Wei(1); PENG Bin(2); DU Wen(1); ZHONG Kejun(1); LIU Huimin(2)
    (1) China Tobacco Hunan Industrial Co., Ltd., Technology Center and Changsha Cigarette Factory, Changsha, Hunan, P.R. China; (2) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China
    The ratio between cut tobacco burned at puffing stage and cut tobacco burned during the whole smoking process of a cigarette was defined as smoking puff ratio (SPR), and a method for determining the SPR of a cigarette was proposed. Cigarettes were smoked ...