Search Results

41 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, 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 ...
  3. 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 ...
  4. CORESTA Congress, Paris, 2006, PT 10

    Classification of the contaminant in the cigarette wrap paper using PLA-DA algorithm with near infrared spectra

    DU Wen; REN Jianxin; LI Shaoye; ZHANG Wenli
    Changsha Technology Center of CNTC, Changsha, Hunan, China.
    To classify the contaminant in the cigarette wrap paper, PLS-DA model was established with the near infrared reflection spectra. Standard samples were prepared by painting possible oil contaminant (lubricant, vacuum oil, lecithin, etc.) on the clean wrap ...
  5. CORESTA Meeting, Agronomy/Phytopathology, Santa Cruz do Sul, 2005, APOST 33

    Configuration and dynamic formation of the root system of flue-cured tobacco

    YI Jianhua; JIA Zhihong; SUN Zaijun
    Changsha Technology Center of CNTC, Changsha, Hunan, China.
    Dynamic spatial distributions and optimal shapes of the root system of flue-cured tobacco under different modes of fertilization were preliminarily studied so as to provide the theoretical basis for the optimal time and locations of fertilization. The ...
  6. CORESTA Meeting, Smoke Science/Product Technology, Stratford-upon-Avon, 2005, SSPTPOST 02

    Wavelet transform: improve the transferabilities of NIR calibrations

    DU Wen; REN Jianxin; ZHANG Wenli; SHAO Xueguang
    Changsha Technology Center of CNTC, Changsha, Hunan, China.
    Calibration transfer is a difficult task in the application of NIR models. This study introduced wavelet transform algorithm to improve the transferability of NIR calibrations among 5 FT-NIR instruments. The NIR spectra of a group of 400 tobacco samples ...
  7. CORESTA Meeting, Smoke Science/Product Technology, Stratford-upon-Avon, 2005, SSPTPOST 14

    Determination of HCN content in mainstream cigarette smoke using constant flow analyzer-new indication reaction and better performance

    ZHOU Yu; CAO Jihong; WANG Jian; YANG Huawu
    Changsha Technology Center of CNTC, Changsha, Hunan, China.
    Isonicotinic acid and 1,3-dimethyl barbituric acid were applied as the indication reagents for the determination of HCN content in mainstream smoke using constant flow analyzer (CFA). The recovery rate of HCN was above 99% and the relation coefficient was ...
  8. CORESTA Congress, Kyoto, 2004, APOST 04

    A new Romanian flue-cured cultivar : Virginia 177

    CIUPERCA A.; PAUNESCU M.; PAUNESCU A.D.; BOLD I.; DUMITRASCU P.
    Central Research Station for Tobacco Culture and Industrialization, Bucharest, Romania.
    The improvement of the chemical and industrial quality of Virginia tobacco in Romania represents the main objective for those involved in tobacco research, production and industrialization. The most important way to achieve this objective is the change of ...
  9. CORESTA Congress, Kyoto, 2004, PPOST 06

    The prevention of TSWV attack in the Burley fields in Romania

    STANESCU V.; PAUNESCU A.D.; DIMA A.; PAUNESCU M.; BURCEA A.M.; SANISLAV N.
    Central Research Station for Tobacco Culture and Industrialization, Bucharest, Romania.
    The Burley cultivars are very sensitive to virosis, in general, and to TSWV, in particular.Yield and quality of the obtained tobacco largely depend on the prevention of this virus, and this is managed by the chemical control of Thrips tabaci Lind., the ...