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4318 results

  1. Tobacco Science & Technology, 2012, 11, p. 56-59, ISSN.1002-0861

    Synthesis of neonicotinoid compounds

    WANG Taotao(1); LI Dandan(1); PENG Yefang(1); LIU Chongbo(2); WEN Huiliang(*1)
    (1) State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R. China; (2) School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, P.R. China
    N-(Diphenylmethylene)-3-(aminomethyl) pyridine was first synthesized from 3-(aminomethyl) pyridine and benzophenone with toluene as water-carrying agent, then anatabine was prepared from the synthesized compound. Anabasine, N-methylanatabine and...
  2. Tobacco Science & Technology, 2012, 11, p. 60-63, ISSN.1002-0861

    Transfer behavior of maleic hydrazide residue in cigarette during smoking

    ZHANG Hongfei(1); TANG Gangling(1); LOU Xiaohua(2); CHEN Tao(3); GAO Chuanchuan(2); BAI Junchao(3)
    (1) China National Tobacco Quality Supervision & Test Center, Zhengzhou 450001, P.R. China; (2) Guizhou Tobacco Quality Supervision & Test Station, Guiyang 550025, P.R. China; (3) Chongqing Tobacco Quality Supervision & Test Station, Chongqing 400023, P.R. China
    The transfer behavior of maleic hydrazide (MH) in cigarette during smoking was studied by adding internal standard. The pyrolysis mechanism of MH was studied with pyrolysis technology. The results showed that: 1) The transfer rate of MH into...
  3. Tobacco Science & Technology, 2012, 11, p. 64-68, ISSN.1002-0861

    Surface cell morphological characteristics of cured tobacco leaves from typical flue-cured tobacco growing areas in China

    GUO Weimin; ZHANG Yanling; CAI Xianjie; ZHANG Shixiang; WANG Jianwei; LIU Yang; YIN Qisheng*
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    In order to investigate the surface cell morphological characteristics of flue-cured leaves and their differences between growing areas in China, the surface microscopic images of C3F cured leaves collected from different typical growing areas were...
  4. Tobacco Science & Technology, 2012, 11, p. 69-73, ISSN.1002-0861

    Geostatistics-based evaluation of main nutrients in Qujing tobacco planting soil

    LI Qiang(1); ZHOU Jiheng(*1,2); ZHANG Yiyang(1); ZHANG Zhengyan(2); XIE Yan(2)
    (1) Tobacco Research Institute, Hunan Agricultural University, Changsha 410128, P.R. China; (2) Qujing Branch of Yunnan Province Tobacco Company, Qujing 655000, Yunnan, P.R. China
    In order to investigate the spatial distribution of main nutrients in tobacco planting soil, 3650 soil samples were collected with GPS technique in Qujing. The overall characteristics and spatial variation of main nutrients in the soil were analyzed...
  5. Tobacco Science & Technology, 2012, 11, p. 74-78, ISSN.1002-0861

    Influences of arbuscular mycorrhizal fungi on phosphorus content in tobacco planting soil and nutrition absorption of flue-cured tobacco plants

    YAO Juan(1); WANG Maosheng(2); WANG Feng(*1,3); XU Dongqing(2)
    (1) Agricultural College of Guizhou University, Guiyang 550025, P.R. China; (2) Guizhou Tobacco Science Institute, Guiyang 550081, P.R. China; (3) Qianxinan Prefecture Tobacco Company of Guizhou Province, Xingyi 562400, Guizhou, P.R. China
    In order to study the mycorrhizal effects of mycorrhizal seedling after transplanting, three nitrogen (N) levels, 45, 67.5 and 90 kg/ha, were applied in field experiments and the effects of mycorrhizal seedlings on phosphorus (P) content in soil and...
  6. Tobacco Science & Technology, 2012, 12, p. 14-17, ISSN.1002-0861

    Study on control mode for formulation uniformity during tobacco threshing and redrying

    YANG Kai(1); CHEN Qing(*2); XU Qimin(2); LUO Jun(2); WANG Weimiao(1); ZHAO Quan(2); XU wei(2); DING Ziyuan(2); CAO Leyi(2)
    (1) Technology Center, Shanghai Tobacco Group Co., Ltd., Shanghai 200082, P.R. China; (2) Hua Huan International Tobacco Co., Ltd., Chuzhou 233121, Anhui, P.R. China
    To control the blending uniformity more reasonably in tobacco threshing and redrying, minimize fluctuation of nicotine content in processed strips and ensure quality consistence of cigarette, the nicotine content in tobacco leaf was taken as a...
  7. Tobacco Science & Technology, 2012, 12, p. 33-38, ISSN.1002-0861

    Effects of yellowing and color fixing durations during curing on chemical components in flue-cured tobacco leaves

    JIANG Houlong(1,2); LIU Guoshun(*1); ZHOU Hui(1); HU Hongchao(3)
    (1) College of Tobacco; National Tobacco Cultivation & Physiology & Biochemistry Research Center, Henan Agricultural University, Zhengzhou 450002, P.R. China; (2) Chongqing Tobacco Science Research Institute, Chongqing 400715, P.R. China; (3) Pingdingshan Branch, Henan Province Tobacco Company, Pingdingshan 467000, Henan, P.R. China
    The effects of durations of yellowing and color fixing during curing on chemical components in flue-cured tobacco leaves in a stepping flue-curing barn were investigated. The results showed that: 1) When yellowing duration was prolonged for 12 hours,...
  8. Tobacco Science & Technology, 2012, 12, p. 39-43, ISSN.1002-0861

    Effects of spacing, nitrogen application rate and tip leaf length after topping on agronomic characters and chemical composition of Yunyan 97

    ZHA Hongbo; SHI Lei; MAO Zhiyong; HUANG Wei; NI Xia; ZHAO Fang
    Zhaotong Branch, Yunnan Province Tobacco Company, Zhaotong 657000, Yunnan, P.R. China
    In order to find out the suitable cultivation practices for Yunyan 97 in Zhaotong, Yunnan, the effects of planting spacing, nitrogen application rate and tip leaf length after topping on the agronomic characters of and chemical components in upper...
  9. Tobacco Science & Technology, 2012, 12, p. 44-48, ISSN.1002-0861

    Simultaneous determination of four aromatic amines in mainstream cigarette smoke with liquid chromatography tandem mass spectrometry

    YU Jingjing; WANG Sheng; XIE Fuwei*; CHEN Yusong; ZHAO Ge; ZHANG Xiaobing
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    For simultaneous determination of four aromatic amines, including 1-naphthylamine, 2-naphthylamine, 3-aminobiphenyl and 4-aminobiphenyl, in mainstream cigarette smoke, a liquid chromatography tandem mass spectrometric (LC-MS/MS) method was developed....
  10. Tobacco Science & Technology, 2012, 12, p. 49-51, ISSN.1002-0861

    Determination of moisture content in tobacco with gas chromatography

    WU Jinming(1); PENG Bin(*2); LIU Kejian(2); ZHAO Xiaodong(2); LI Ping(2); ZHANG Xiaobing(2)
    (1) China Tobacco Guangdong Industrial Co., Ltd., Guangzhou 510145, P.R. China; (2) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    In order to accurately determine the moisture content in tobacco, a method with gas chromatography was developed. Four factors, including extraction means, extraction solvent, extraction time and solvent volume, were optimized. The results showed...