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43 results

  1. CORESTA Congress, Quebec, 2014, Smoke Science/Product Technology Groups, ST 44

    Investigation of pyrolysis behaviour of lutein in air by thermo gravimetry-single drop micro extraction-gas chromatography-mass spectrometry

    YANG Ji; YANG Liu; WU Yiqin; MIAO Mingming; ZHE Wei; CHEN Yongkuan
    China Tobacco Yunnan Industrial Co., Ltd of CNTC, R&D Center, Kunming, P.R. China
    To investigate the pyrolysis behaviour of lutein in air, an automatic single drop micro extraction (SDME) device for trapping the released fractions was designed and coupled with thermo gravimetry-gas chromatography-mass spectrometry. According to the ...
  2. Tobacco Science & Technology, 2012, 6, p. 72-75, ISSN.1002-0861

    Fungal biosorbent produced by fermentation of waste tobacco stems and its decolorization effect

    XI Yu(1); GAO Ming(2); GUO Dongheng(1); LI Junxia(1); LI Guanglei(1); WANG Xifeng(1); WANG Yanyan(1); ZHU Daheng(*1)
    (1) Department of Bioengineering, Zhengzhou University, Zhengzhou 450001, P.R. China; (2) Yellow River Basin Water Resources Protection Bureau, Zhengzhou 450004, P.R. China
    A high-efficient decolorizing fungus was screened from the product of solid state fermentation of waste tobacco stems and named as LY7. By its morphological and microscopic characteristics, LY7 was preliminarily identified as Penicillium sp. LY7 developed ...
  3. CORESTA Meeting, Smoke Science/Product Technology, 2011, Graz, ST 36

    Matrix effects on analysis of multi-pesticide residues in tobacco by LC-MS/MS and GC-MS

    HU Bin(1); YAN Hui-hui(2); MA Hai-ming(2); XIE Fu-wei(1); LIU Hui-min(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R.China; (2) Dept. of Chemistry, Zhengzhou University, Zhengzhou 450001, P.R. China
    A fast and easy multi-pesticide residue analyzing method for 73 and 19 pesticides in tobacco by LC-MS/MS and GC-MS respectively was introduced. The matrix effects and the deviations of detecting results were discussed as the main points of this thesis in ...
  4. Tobacco Science & Technology, 2011, 12, p. 69-72., ISSN.1002-0861

    Screening of solid state fermentation conditions of waste stem for producing Bacillus Thuringiensis

    DU LEI; ZHAO GAO-LING; XI YU; ZANG XIAO-JING; ZHU DA-HENG
    Department of Bioengineering, Zhengzhou University, Zhengzhou 450001, P.R. China
    Using waste tobacco stem as raw material, the medium compositions and conditions of solid state fermentation for Bacillus thuringiensis HD-1 growth were optimized by orthogonal design and single factor experiments. The results showed that the optimal ...
  5. Tobacco Science & Technology, 2011, 7, p. 43-47., ISSN.1002-0861

    Determination of fifteen pesticide residues in tobacco with LC-MS/MS

    YAN HUI-HUI(1); HU BIN(2); LIU HUI-MIN(2); MA HAI-MING(1); WANG LI-JIE (1); SHI JIE(1)
    1. Department of Chemistry, Zhengzhou University, Zhengzhou 450001, P.R. China; 2. Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    A method for rapidly determining fifteen pesticides, such as pymetrozine and others, in tobacco with LC-MS/MS was developed. Samples were extracted by acetonitrile, cleaned up by dispersive solid-phase extraction and finally detected with LC-MS/MS. The ...
  6. Tobacco Science & Technology, 2011, 7, p. 60-63., ISSN.1002-0861

    Transfer behavior of some carbonyl flavors in filter and tobacco rod of cigarette

    ZHANG JIE(1); ZONG YONG-LI(1); ZHOU HUI-SHUN(2); PENG SHU-HAI(1); SONG YU-BING(1)
    1. Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; 2. Technology Center of China Tobacco Jiangxi Industrial Corporation, Nanchang 330096, P.R. China
    Twelve carbonyl flavor samples were added into cut tobacco and filter tips of cigarettes and then analyzed by simultaneous distillation and extraction coupled with GC and GC/MS to determine the ratios of flavor retained in tobacco rod or filter, migrated ...
  7. Tobacco Science & Technology, 2011, 7, p. 64-68., ISSN.1002-0861

    Identification of dominant molds isolated from stored Henan tobacco and screening of fungicides

    LI CHUN-YAN(1); ZHAO GAO-LING(1); YE HONG-CHAO(2); XI YU(1); LIU JIANG-YU(3); ZHU DA-HENG(1)
    1. Department of Bioengineering, Zhengzhou University, Zhengzhou 450001, P.R. China; 2. Luoyang Tobacco Company of Henan Province, Luoyang 471000, Henan, P.R. China; 3. Tianchang International Tobacco Co., Ltd., Xuchang 461000, Henan, P.R. China
    The dominant mold fungi isolated from stored Henan tobacco leaves were identified, and the control effects of fungicides against those fungi were detected. The results showed that Aspergillus was the main dominant fungi, Penicillium the next. Sorbic acid ...
  8. Tobacco Science & Technology, 2010, 12, p. 57-60., ISSN.1002-0861

    Organic fertilizer production from tobacco stem by microbial fermentation

    GAO MING(1); GUO LING-YAN(2); XI YU(1); ZHAO GAO-LING(1); ZHANG ZHI-JIAN(3); ZHU DA-HENG(1)
    1. Department of Bioengineering, Zhengzhou University, Zhengzhou 450001, P.R. Chinam 2. Nanyang Pukang Pharmaceutical Co., Ltd, Nanyang 473050, Henan, P.R. China; 3. Tianchang International Tobacco Co., Ltd, Xuchang 461000, Henan, P.R. China
    Producing of organic fertilizer from tobacco stems by aerobic fermentation was tested in an in-house fermentation apparatus. The temperature, moisture content, pH, organic matter, germination index (GI) in fermentation were tested and the major nutrients ...
  9. Tobacco Science & Technology, 2010, 8, p. 41-45., ISSN.1002-0861

    Effects of filter length and ventilation on transfer behavior of some ester flavors in cigarette

    ZHOU HUI-SHUN(1); ZONG YONG-LI(2); ZHANG JIE(2); PENG SHU-HAI(2); SONG YU-BING(2)
    1. Technology Center, P.R. China Tobacco Jiangxi Industrial Corporation, Nanchang 330096, P.R. China; 2. Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    In order to investigate the effects of filter length and ventilation on the transfer behavior of some ester flavors in cigarettes, the said ester flavors were injected into cigarettes with filters of various length and ventilation rates. These flavored ...