Search Results

455 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 14

    Field tests of loss-of-function tobacco lines of eIF(iso)4E for resistance to tobacco bushy top disease and agronomic traits

    KOGA K.(1); SHINJO A.(1); MAINJENI C.E.D.(2); MSANGOSOKO K.R.(2); UDAGAWA H.(1); TAKAKURA Y.(1)
    (1) Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan; (2) Agricultural Research and Extension Trust, Department of Research and Technical Services, Lilongwe, Malawi
    Tobacco bushy top disease (TBTD) is one of the serious diseases affecting tobacco (Nicotiana tabacum L.) production in African countries such as Malawi, Zambia, Tanzania and Ethiopia. This disease is caused by a mixed infection of tobacco bushy top virus ...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, APPOST 05

    Influence of disease resistance on the yield and quality in Burley tobacco

    NAKAMURA T.; TAKEMATSU T.; IWAI Y.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Tobacco breeders recognise empirically that introduction of certain disease resistance is accompanied by negative effects on agronomic traits such as decrease in yield and quality. Only a few studies have quantitatively clarified the negative effects of ...
  3. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 45

    Meta-analysis of two biomarkers of exposure of tobacco products

    AYALA-FIERRO F.(1); ELAMIN A.(2); FROST-PINEDA K.(3); JIN T.(3); PRASAD G.L.(3); SARKAR M.(4); SCHMIDT E.(3); VERRON T.(5)
    (1) ITG Brands LLC, Greensboro, NC, U.S.A.; (2) PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland; (3) RAI Services Company, Winston-Salem, NC, U.S.A.; (4) Altria Client Services LLC, Richmond, VA, U.S.A.; (5) SEITA - Imperial Brands, Paris, France
    In the context of tobacco products, broadly two types of biomarkers exist, biomarkers of exposure (BoE) and biomarkers of potential harm (BoPH). BoE measure exposure to tobacco constituents, e.g. carbon monoxide (CO) and nicotine equivalents (NEQs). The ...
  4. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 11 (also presented at TSRC 2019)

    Simultaneous determination analysis of glycerol, propylene glycol, nicotine, menthol and water by discharge ionisation detector on gas chromatography

    SHIMAZU A.; OMORI F.
    Japan Tobacco Inc., Product Quality Research Center, Tokyo, Japan
    CORESTA developed a recommended method (CRM 84) for determination of Glycerin (G), Propylene Glycol (PG), nicotine and water in the aerosol of e-cigarettes by gas chromatography (GC) with flame ionisation detector (FID) and thermal conductivity detector ...
  5. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 33

    Quantitative risk assessment (QRA) indicates reduced risk potential for carcinogenic and non-carcinogenic effects of the aerosol of the next generation products (NGPs) compared to reference cigarettes

    AYALA-FIERRO F.(1); CZEKALA L.(2); SIMMS L.(2); RUDD K.(2); CAVA G.(2); STEVENSON M.(2)
    (1) ITG Brands LLC, Greensboro, NC, U.S.A.; (2) Imperial Brands PLC, Bristol, U.K.
    In order to understand the potential relative health risks of NGPs compared to cigarettes, we compared the relative risks of aerosols from tobacco-containing and tobacco-free NGPs to the smoke generated from a reference cigarette. Quantitative Risk ...
  6. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 39

    Risk assessment of a novel tobacco vapour product using ToxTracker® assay and high content screening in vitro

    MUNAKATA S.; ERAMI K.; HASHIZUME T.
    Japan Tobacco Inc., R&D Group, Scientific Product Assessment Center, Yokohama, Kanagawa, Japan
    A novel tobacco vapour product (NTV) showed its lower genotoxic and cytotoxic potentials in the in vitro bacterial reverse mutation assay, micronucleus assay, and neutral red uptake assay compared with a combustible tobacco product. This study aimed to ...
  7. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 48

    Comparative study of Salmonella typhimurium tester strains TA1537, TA97 and TA97a in mutagenicity evaluation of tobacco products

    SAKAI Y.; ISHII T.; TAKAHASHI Y.; HASHIZUME T.; FUKUSHIMA T.
    Japan Tobacco Inc., Scientific Product Assessment Center, R&D Group, Yokohama, Kanagawa, Japan
    The Ames test has been conducted to examine the mutagenicity of tobacco products and to compare relative mutagenicity of cigarette smoke. The OECD TG 471 states that at least five tester strains should be used for the Ames test, and Salmonella typhimurium ...