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60 results

  1. 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 ...
  2. 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 ...
  3. 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 ...
  4. 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 ...
  5. 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 ...
  6. 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 ...
  7. Tobacco Science & Technology, 2010, 9, p. 43-46., ISSN.1002-0861

    Rapid determination of organophosphorous pesticide residues in tobacco by GC/MS

    SHI JIE(1); YANG JING(1); LIU HUI-MIN(2); HU BIN(2); TAO PENG-LI(1); YAN HUI-HUI(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 fast determining the organophosphorous pesticide residues in tobacco was developed. Tobacco samples were extracted with acetonitrile, cleaned up with primary secondary amine adsorbent and detected by gas chromatography-mass spectrometry. The ...
  8. CORESTA Congress, Paris, 2006, APOST 07

    Genetic improvement of Nicotiana tabacum by applying remote hybridization and biotechnological methods

    NIKOVA V.; IANCHEVA A.M.; VLADOVA R.; PANDEVA R.; PETKOVA A.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Wild Nicotiana species possess a high potential of useful features. Interspecific hybridization is a very effective method for the introducing of desired characters into tobacco and achieving crop improvement. Its successful realization is limited due to ...
  9. CORESTA Congress, Paris, 2006, APOST 24

    Color and aroma of tobacco: a facilitated approach for their objective evaluation in Oriental tobaccos and for cultivar classification within Virginia and Oriental tobacco types

    DAGNON S.; EDREVA A.; VLADOVSKA A.
    Tobacco and Tobacco Products Institutes, Plovdiv, Bulgaria; D. Kostov Inst. of Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria.
    In the routine practice the evaluation of colour and smoke aroma, major qualitative characteristics of tobacco, is mainly based on organoleptic estimates by expert panels, with this suffering from subjectivity, high costs and health hazards. We propose a ...