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290 results

  1. Tobacco Science & Technology, 2012, 2, p. 43-46., ISSN.1002-0861

    Determination of NNN and its metabolites in rabbit blood with HPLC-MS/MS

    ZHAO Beibei(1); WANG Sheng(1); WANG Juan(2); WANG Zhaoyu(3); ZHANG Jianxun(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) Quality Supervision & Test Station of Hainan Tobacco Corporation, Haikou 571100, P.R. China; (3) Quality Supervision & Test Station of Zhejiang Tobacco Corporation, Hangzhou 310001, P.R. China
    In order to accurately determine N-nitroso nornicotine (NNN) and its metabolites in rabbit blood, a high-performance liquid chromatography/tandem mass spectrometry method was established by optimizing chromatographic conditions and mass spectrometric ...
  2. Tobacco Science & Technology, 2012, 2, p. 56-60., ISSN.1002-0861

    Effects of permeability of tipping paper and plug wrapper on basic aroma components in mainstream cigarette smoke

    ZHAI Yujun(1,2); TIAN Hu(2); ZHU Xianyue(2); ZHANG Xiaobing(3); CAI Junlan(3); WANG Hongbo(3); XIE Fuwei(3); LIU Huimin(3)
    (1) Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China; (2) Technology Center, China Tobacco Gansu Industrial Co., Ltd., Lanzhou 730050, P.R. China; (3) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    In order to study the influences of tipping paper and plug wrapper on the basic aroma components in mainstream cigarette smoke, the basic aroma components in particulate matter and vapor phase of mainstream smoke of cigarettes with tipping paper and plug ...
  3. Tobacco Science & Technology, 2012, 2, p. 61-65., ISSN.1002-0861

    Effects of material’s parameters on deliveries of tar, nicotine, and CO in Mainstream Smoke of Virginia type cigarettes

    PENG Bin; SUN Xuehui; SHANG Pingping; ZHAO Le; LI Xiang; LI Ping; NIE Cong
    Zhengzhou Tobacco Institute of CNTC, Zhengzhou 450001, P.R. China
    In order to investigate the relationships between cigarette materials and chemical components in mainstream cigarette smoke, the effects of grammage and air permeability of cigarette paper, air permeability of tipping paper and plug wrapper, and draw ...
  4. Tobacco Science & Technology, 2012, 2, p. 66-70., ISSN.1002-0861

    Subcellular distribution and chemical forms of Cd in two tobacco genotypes with different Cd accumulating pattern

    TIAN Yangyang(1); CHEN Jianghua(2); ZHANG Yanling(1); ZHANG Shixiang(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) Hunan Tobacco Corporation of CNTC, Changsha 410004, P.R. China
    An experiment on hydroponic seedlings was carried out to study the subcellular distribution and chemical forms of Cd in the root system and leaves of two tobacco genotypes (K326 and N. Rustica) with different Cd accumulation pattern at different Cd ...
  5. Tobacco Science & Technology, 2012, 3, p. 31-33., ISSN.1002-0861

    Study on thermo-gravimetric behavior of five amino acids and pyrolytic formation of hydrocyanic acid

    LI Feifei; HAO Jüfang; GUO Jizhao; WANG Hongbo; XIE Fuwei; XIA Qiaoling; XIE Jianping
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    The effects of heating rate and atmosphere on the yield of hydrocyanic acid (HCN) from pyrolysis of glycine (Gly), alanine (Ala), leucine (Leu), isoleucine (Ile) and proline (Pro) were investigated by a modified thermo-gravimetric analyzer. The results ...
  6. Tobacco Science & Technology, 2012, 3, p. 38-47., ISSN.1002-0861

    Effects of ambient temperature and relative humidity on migration behavior of tobacco flavors in cigarettes

    BAI Xinliang(1) ; HU Jun(1), WANG Jun(2); ZHOU Jianhua(2); CHU Guohai(2); HU Youchi(1); ZENG Shitong(1); ZHAO Mingyue(1); YANG Jun(2)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) China Tobacco Zhejiang Industrial Co., Ltd., Hangzhou 310009, P.R. China
    In order to investigate the effects of ambient temperature and relative humidity (RH) on the migration behavior of tobacco flavors in cigarette, the migration ratios of flavors to mainstream smoke (MS) and their retention ratios by filter tips were ...
  7. Tobacco Science & Technology, 2012, 3, p. 48-51., ISSN.1002-0861

    Factors influencing determination of total volatile components in tobacco flavors

    LIU Shan(1); HU Jun(1); LIU Yang(1); HUANG Yan(2); ZHU Qinglin(3); QU Rongfen(4); LIU Yi(5); YANG Tingshu(6); XIE Jianping(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) Huafang Tobacco Flavor Co., Ltd., Guangzhou 510530, P.R. China; (3) China Tobacco Anhui Industrial Co., Ltd., Hefei 230088, P.R. China; (4) Hongta Tobacco (Group) Co., Ltd., Yuxi 653100, Yunnan, P.R. China; (5) Huabao Food Flavor and Fragrance (Shanghai) Co., Ltd., Shanghai 201821, P.R. China; (6) Yunnan Reascend Tobacco Technology (Group) Co., Ltd., Kunming 650106, P.R. China
    In order to investigate the factors influencing the determination of total volatile components in tobacco flavor, 6 tobacco flavor samples including top flavors and casings were measured in 4 laboratories. The factors involved were specifications of ...
  8. Tobacco Science & Technology, 2012, 3, p. 67-74, ISSN.1002-0861

    Variance analysis of carotenoid and its degradation product contents in flue-cured tobacco of different appearance

    XI Yuanxiao(1,2); LIU Yang(1); LI Feng(1); YANG Jun(1); WANG Xinmin(1); WEI Chunyang(1); SONG Jizhen(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) Shandong Weifang Tobacco Company, Weifang 261061, Shandong, P.R. China
    The contents of carotenoid and its degradation products were determined by HPLC and GC/MS, respectively. The results showed that: 1) The contents of lutein, β-carotene and carotenoid increased with the darkening of leaf color, decreased with the increase ...
  9. Tobacco Science & Technology, 2012, 4, p. 28-32, ISSN.1002-0861

    Determination of hydrogen peroxide in mainstream cigarette smoke by highly selective fluorescence method with Amplex Red/HRP

    PENG Shuhai(1); ZHANG Ying(2); LIU Hailin(1); ZHUANG Yadong(2); JIANG Chengyong(1); SUN Shihao(1); ZONG Yongli(1); XIE Jianping(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) Technology and Research Center, China Tobacco Jiangsu Industrial Co., Ltd., Nanjing 210093, P.R. China
    A highly selective fluorescence method with Amplex Red HRP was developed to determine the hydrogen peroxide in mainstream cigarette smoke. This method’s LOD=13.5 nmol/L, recovery 98.3 %-101.7 % and RSD<3.17 % (n =5). The level of hydrogen peroxide in ...
  10. Tobacco Science & Technology, 2012, 4, p. 37-43, ISSN.1002-0861

    Determination of 11 polycyclic aromatic hydrocarbon biomarkers in human urine with LC-MS/MS

    CHEN Yusong; WANG Sheng; YU Jingjing; LIU Huimin*; CAO Depo
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    In order to evaluate the exposure to PAHs in environmental tobacco smoke, the influences of solid phase extraction column, chromatographic column and mass spectrometry conditions on analytical results were investigated, a method with SPE-HPLC/MS/MS was ...