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4318 results

  1. Tobacco Science & Technology, 2012, 11, p. 13-16, ISSN.1002-0861

    Application of digital image analysis in determination of strip structure

    XU Dayong(1); Yu Na(1); DENG Guodong(1); LI Shanlian(1); SHEN Xiaofeng(2); JIANG Linzhong(3); LI Xinfeng(3); JIANG Huanyuan(4); DU Jinsong(*1)
    (1) Key Laboratory of Tobacco Processing Technology of CNTC, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) Hongyun Honghe Tobacco (Group) Co., Ltd., Kunming 650202, P.R. China; (3) Longyan Golden Leaf Redrying Co., Ltd., Longyan 364102, Fujian, P.R. China; (4) China Tobacco Fujian Industrial Co., Ltd., Xiamen 364022, Fujian, P.R. China
    A new method for determining strip structure with digital image analysis was discussed. The results showed that: 1) digital image analysis method could be used to determine strip structure; the test precision of the method ranged from 1.31 to 31.91...
  2. Tobacco Science & Technology, 2012, 11, p. 17-19, ISSN.1002-0861

    Design and application of pressurized device for pre-expansion of cut tobacco

    TAO Yijing(1); JIAN Longhui(2); HOU Youping(3); LI Hui(1); LI Biao(1)
    (1) China Tobacco Machinery Technology Center Co., Ltd., Shanghai 201206, P.R. China; (2) China Tobacco Machinery Group Co., Ltd., Beijing 100055, P.R. China; (3) Qinhuangdao Tobacco Machinery Co., Ltd., Qinhuangdao 066318, Hebei, P.R. China
    The cut tobacco expanding system composed of a conditioner and a dryer has the disadvantages of its complicated structure and control system, and high energy consumption; the expanded tobacco tends to be overdried and presents different...
  3. Tobacco Science & Technology, 2012, 11, p. 20-22, 25, ISSN.1002-0861

    Improvement of moisture content control system in HAUNI ordering cylinder

    DONG Wei; LI Kun; WANG Jian; ZHAO Yu; YAN Junmin
    Xuzhou Cigarette Factory, China Tobacco Jiangsu Industrial Co., Ltd., Xuzhou 221005, Jiangsu, P.R. China
    In order to minimized the fluctuation of output moisture content in tobacco, the control system in HAUNI’s ordering cylinder was modified as follows: 1) a closed loop control system was designed for the output end of the cylinder, to feed the value...
  4. Tobacco Science & Technology, 2012, 11, p. 29-32, ISSN.1002-0861

    Influence of ventilation on burning temperature and deliveries of harmful components in mainstream cigarette smoke

    PANG Yongqiang(1); HUANG Chunhui(2); CHEN Zaigen(1); CHEN huan(1); JIANG Xingyi(1); TANG Gangling(1)
    (1) China National Tobacco Quality Supervision & Test Center, Zhengzhou 450001, P.R. China; (2) China Tobacco Guangdong Industrial Co., Ltd., Guangzhou 510145, P.R. China
    In order to reduce the harm of smoking, the effects of air permeability of cigarette paper, tipping paper and plug wrapper on the burning temperature of cigarette and deliveries of tar and seven harmful components (including CO, HCN, NNK, NH3, B[a]P,...
  5. Tobacco Science & Technology, 2012, 11, p. 33-37, ISSN.1002-0861

    Application of fuzzy judgment and Euclidean distance method in evaluation of chemical components in flue-cured tobacco leaf

    HU Zhongsheng; CHEN Jingbo; ZHOU Xinghua; ZHAO Qibai*; XU Zhiqiang
    China Tobacco Jiangsu Industrial Co., Ltd., Nanjing 210019, P.R. China
    In order to scientifically assess the chemistry of tobacco leaf, 9 chemical indices (including nicotine, total sugar, reducing sugar, total nitrogen, potassium, chlorine, sugar/nicotine ratio, nitrogen/nicotine ratio and potassium/chlorine ratio) of...
  6. Tobacco Science & Technology, 2012, 11, p. 38-41, 50, ISSN.1002-0861

    Combustion characteristics of flue-cured tobacco and its kinetic analysis

    XIA Ming(1); LI Jinguang(1); QIAO Guobao(1); JIANG Jianjun(1); HU Yonghua(2)
    (1) Chuzhou Cigarette Factory, China Tobacco Anhui Industrial Co., Ltd., Chuzhou 239000, Anhui, P.R. China; (2) Technology Center, China Tobacco Anhui Industrial Co., Ltd., Hefei 230088, P.R. China
    In order to investigate the effects of combustion conditions on the thermal behavior of flue-cured tobacco, the thermal decomposition and combustion characteristics of flue-cured tobacco at different oxygen concentrations and heating rates were...
  7. Tobacco Science & Technology, 2012, 11, p. 42-44, ISSN.1002-0861

    Relationships between stalk position of tobacco leaves and deliveries of 7 harmful compounds in mainstream cigarette smoke

    PENG Bin; ZHAO Le; SUN Xuehui; SHANG Pingping; LI Xiang; NIE Cong
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    In order to investigate the relationships between stalk positions and the deliveries of 7 harmful compounds, including CO, HCN, NNK, NH3, B[a]P, phenol and crotonaldehyde, in mainstream cigarette smoke, cigarettes of the same hardness made of each...
  8. Tobacco Science & Technology, 2012, 11, p. 45-50, ISSN.1002-0861

    Simultaneous determination of 6 antiseptics in tobacco with LC-MS/MS method

    YANG Fei; BIAN Zhaoyang; TANG Gangling; HU Qingyuan
    China National Tobacco Quality Supervision & Test Center, Zhengzhou 450001, P.R. China
    A method basing on high performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for determining the antiseptic residues in tobacco. The analytes extracted from tobacco samples were separated on C18 column (150 mm×2.1 mm×3...
  9. Tobacco Science & Technology, 2012, 11, p. 5-9, ISSN.1002-0861

    Comparison of processing quality of cut strips dried with two different technologies

    WANG Zongying(1); PENG Juncang(1); XU Lei(1); WANG Jianqiang(1); CAO Jieqiong(2); LEI Dongfeng(1)
    (1) Technology Center, China Tobacco Shaanxi Industrial Co., Ltd., Baoji 721000, Shaanxi, P.R. China; (2) Baoji Cigarette Factory, China Tobacco Shaanxi Industrial Co., Ltd., Baoji 721000, Shaanxi, P.R. China
    To investigate the effects of drying means on the processing quality of dried cut strips, the change trends of physical indexes, sensory quality, chemical components, smoke indexes and seven harmful components of cut strips after cylinder drying and...
  10. Tobacco Science & Technology, 2012, 11, p. 51-55, ISSN.1002-0861

    Synthesis and pyrolysis of 6-O-acetyl-2, 3, 4-tri-O-isovaleryl-α-D-glucopyranose

    ZHENG Saijing(1); BO Fei(2); FANG Song(2); LIU Baizhan(1); LI Yougui(*2)
    (1) Technical Center, Shanghai Tobacco Group Co., Ltd., Shanghai 200082, P.R. China; (2) School of Chemical Engineering, Hefei University of Technology, Hefei 230009, P.R. China
    Methyl-6-O-TBDPS-α-D-glucopyranoside (2) was selectively synthesized from methyl-α-D-glucopyranoside with high yield, and then isovalerylated, followed by deprotection, acetylation of 6-site and α-site methoxyl group to form Compound 6....