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4318 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. 47-51., ISSN.1002-0861

    Pyrolysis analysis of phenylethyl β-D-glucopyranoside

    SHI Dongfang(1); AN Yi(2); MOU Dingrong(3); BAI Xiaoli(3); MAO Duobin(1)
    (1) School of Tobacco Science and Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. Chinam (2) Heilongjiang Tobacco Industrial Co., Ltd., Harbin 150001, P.R. China; 3. Technology Center, Hongta Tobacco (Group) Co., Ltd., Yuxi 653100, Yunnan, P.R. China
    The thermal mass loss and pyrolysis products of phenylethyl β-D-glucopyranoside were investigated with thermogravimetry and differential thermal analysis (TG-DTA) and online pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). The TG curve...
  3. Tobacco Science & Technology, 2012, 2, p. 52-55., ISSN.1002-0861

    Nested factorial design for analysis of cigarette tar

    ZHAO Yantang(1); ZHAO Yueli(1); YU Hongxiao(1); SUN Dongliang(2); ZHU Zhanying(1); ZHAO Xuyong(3); LI Jiyun(1); WANG Binbin(3)
    (1) Technology Center, China Tobacco Shandong Industrial Co., Ltd., Jinan 250100, P.R. China; (2) Jinan Cigarette Factory, China Tobacco Shandong Industrial Co., Ltd., Jinan 250104, P.R. China; (3) Tengzhou Cigarette Factory, China Tobacco Shandong Industrial Co., Ltd., Tengzhou 277500, Shandong, P.R. China
    To study the differences of various variation sources in the determination of tar content in cigarette smoke, nested variance analysis and nested factorial design analysis were applied. The results showed that: 1) Of all the definite variation...
  4. 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...
  5. 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...
  6. 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...
  7. Tobacco Science & Technology, 2012, 2, p. 71-74., ISSN.1002-0861

    Effects of exogenous salicylic acid on antioxidant metabolism of flue-cured tobacco under low temperature stress

    DENG Shiyuan(1); CHEN Jianjun(1); LUO Fuming(2); WANG Wei(1); LING Shoujun(2); WANG Jun(3)
    (1) Tobacco Laboratory, South China Agricultural University, Guangzhou 510642, P.R. China; (2) Guangdong Qingyuan Tobacco Co., Ltd., Qingyuan 511515, Guangdong, P.R. China; (3) Lianzhou Branch of Guangdong Qingyuan Tobacco Co., Ltd., Lianzhou 513400, Guangdong, P.R. China
    To effectively reduce the harm of low temperature on tobacco growth, flue-cured tobacco sprayed by salicylic acid (SA) was placed at 5 °C, and the effects of SA on antioxidant metabolism of flue-cured tobacco under low temperature stress were...
  8. Tobacco Science & Technology, 2012, 2, p. 75-79., ISSN.1002-0861

    Occurrence regularity of Heliothis assulta Guenée in Hunan and forecast thereof

    LONG Xiao(1); ZENG Aiping(1,2); ZHOU Zhicheng(2); CHEN Yongnian(1); HU Risheng(2); LONG Jianzhong(3); LI Xiaoyi(4); WU Chune(5)
    (1) College of Bio-Safety Science and Technology, Hunan Agricultural University, Changsha 410128, P.R. China; (2) China Tobacco South Experimental Station, Changsha 410128, P.R. China; (3) Ningyuan County Tobacco Company, Ningyuan 425600, Hunan, P.R. China; (4) Chenzhou Tobacco Company, Chenzhou 423000, Hunan, P.R. China; (5) Jianghua County Tobacco Company, Jianghua 425500, Hunan, P.R. China
    In order to effectively control Heliothis assulta Guenée, its regularity of occurrence and forecasting were studied on the basis of years’ records collected from each monitoring point in tobacco planting areas in Hunan. The results showed that the...
  9. 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...