Search Results

16 results

  1. CORESTA Congress, Quebec, 2014, Agronomy/Phytopathology Groups, AP 20

    Comparison of transcriptomes and gene expression profiles of two chilling- and drought-tolerant and intolerant Nicotiana tabacum varieties under low temperature and drought stress

    HAO D.H.(1); MA W.G.(2); SHENG Y.L.(1); ZHANG J.B.(1); JIN Y.F.(1); YANG H.Q.(1); LI Z.G.(1); WANG S.S.(1); GONG M.(1)
    (1) Yunnan Normal University, School of Life Sciences, Kunming, P.R. China; (2) Yunnan Academy of Tobacco Agricultural Sciences, Kunming, P.R. China
    Tobacco plants often encounter chilling and water scarcity conditions when grown in spring and early summer, leading to retarded growth and developmental abnormalities. The purpose of this study was to investigate comprehensive molecular mechanisms...
  2. CORESTA Congress, Quebec, 2014, Agronomy/Phytopathology Groups, AP 24

    Effect of growth temperature on polyphenol content and metabolism in tobacco (Nicotiana tabacum L.) leaves

    DUAN S.Z.(1); LI J.Y.(2); WANG S.S.(1); HAO D.H.(1); JIN Y.F.(1); YANG L.Y.(1); WANG L.T.(1); MA J.H.(1); GONG M.(1)
    (1) Yunnan Normal University, School of Life Sciences, Kunming, P.R. China; (2) Yunnan Academy of Tobacco Agricultural Sciences, Kunming, P.R. China
    Growth temperature for tobacco plants greatly influences growth and quality of tobacco leaves, and polyphenol content in tobacco leaves was often related to tobacco aroma flavour types. The purpose of this study was to evaluate the effect of...
  3. CORESTA Congress, Quebec, 2014, Agronomy/Phytopathology Groups, APPOST 07

    Long-term water deficit imposed by air drought or chilling stress modifies the regulation of proline metabolism in Nicotiana tabacum

    WANG S.S.(1); YANG H.Q.(1); ZHANG J.B.(1); HAO D.H.(1); MA W.G.(2); ZHENG Y.Y.(2); GONG M.(1)
    (1) Yunnan Normal University, School of Life Sciences, Kunming, P.R. China; (2) Yunnan Academy of Tobacco Agricultural Sciences, Kunming, P.R. China
    Tobacco (Nicotiana tabacum), which originated in the tropical Americas, is thought to be rather sensitive to water deficit imposed by drought, salinity or low temperatures, especially during the rapid growth period. However, many past investigations...
  4. Tobacco Science & Technology, 2010, 11, p. 47-50., ISSN.1002-0861

    Comparison of tobacco-specific nitrosamines contents in flue-cured tobacco samples

    WANG BAO-XING(1,2); WANG XU(2); WANG YU(1); YANG WEI-ZU(1); ZOU YUE(1)
    1. Yunnan Reascend Tobacco Technology (Group) Co., Ltd., Kunming 650106, P.R. China; 2. School of Life Sciences, Yunnan Normal University, Kunming 650092, P.R. China
    In order to investigate the distribution of tobacco-specific nitrosamines (TSNAs) in flue-cured tobacco and reduce the harmfulness of cigarette, the contents of TSNAs in 63 flue-cured tobacco samples were determined by GC/TEA and their differences...
  5. CORESTA Congress, Kyoto, 2004, SSPOST 09

    Sampling and analysis consideration for determination of hexavalent chromium in mainstream and sidestream tobacco smoke

    LIONETTI G.; CIARAVOLO S.; MODESTIA F.; NUNZIATA A.
    ETI S.p.A., Research, Chemistry Dept., Rome, Italy.
    Chromium is present in the environment mainly in the oxidation states (III) and (VI). Airborne hexavalent chromium is a known human respiratory carcinogen and allergen. A method for determining hexavalent chromium in mainstream and sidestream...
  6. CORESTA Congress, Kyoto, 2004, SSPOST 10

    Set up of a new analytical methodology for the determination of polycyclic aromatic hydrocarbons in particulate phase mainstream cigarette smoke

    LIONETTI G.; CIARAVOLO S.; GIONTI M.; NUNZIATA A.; PIERRI E.
    ETI S.p.A., Research, Chemistry Dept., Rome, Italy.
    A method for the rapid and selective extraction of polycyclic aromatic hydrocarbons (PAHs) from particulate phase mainstream cigarette smoke was developed using microwave assisted extraction. This system allows the simultaneous extraction of many...
  7. CORESTA Congress, Kyoto, 2004, SSPT 04

    Microwave assisted extraction and thermal energy analysis of tobacco specific nitrosamines in tobacco and tobacco products

    MOLA M.; CIARAVOLO S.; LIONETTI G.; NUNZIATA A.
    ETI S.p.A., Research, Chemistry Dept., Rome, Italy.
    This work reports the use of microwave energy for the extraction of tobacco specific nitrosamines (TSNAs) from tobacco and their detection with a thermal energy analyser (TEA). Conventional sample preparation procedures for the TSNAs involve...
  8. CORESTA Meeting, Smoke Science/Product Technology, Freiburg, 2003, STPOST 03

    Determination of tobacco specific nitrosamines in tobacco and tobacco products by gas chromatography-thermal energy analysis

    MOLA M.; LIONETTI G.; NUNZIATA A.
    ETI S.p.A., Research, Chemistry Dept., Rome, Italy.
    Nitrosamines are chemical compounds that have been linked to some types of cancer. They are not present in freshly harvested green tobacco but they are primarily formed during drying, curing, aging and especially fermentation, by nitrosation of...
  9. CORESTA Meeting, Smoke Science/Product Technology, Freiburg, 2003, STPOST 05

    Tobacco specific nitrosamines in mainstream smoke: development of a gas chromatographic method for their determination

    MOLA M.; LIONETTI G.; NUNZIATA A.
    ETI S.p.A., Research, Chemistry Dept., Rome, Italy.
    Nitrosamines are chemical compounds that are present in tobacco and tobacco smoke. When tobacco burns during smoking, the tobacco specific nitrosamines can transfer to smoke as well as decompose thermally, and additional amounts of the nitrosamines...