Search Results

233 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 13

    Agronomic and qualitative performance of some experimental Burley hybrids in Malawi

    CHAMANGO A.M.Z.; SIBANDE L.A.G.O.; MATEWELE M.
    Agricultural Research and Extension Trust (ARET), Lilongwe, Malawi
    Malawi mainly depends on tobacco for forex generation, with Burley as a major contributor. However, the country has a limited choice of high yielding and disease resistant varieties against a plethora of disease constraints, particularly root-knot ...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, APPOST 14

    Forestry sustainability in the tobacco sector in Malawi: a community concern requiring community approaches

    OFESI H.K.T.; LIVIMBO S.S.
    Agricultural Research and Extension Trust (ARET), Lilongwe, Malawi
    Tobacco farmers depend heavily on tree resources for poles and firewood used in curing. Malawi tobacco farmers predominantly grow Burley tobacco which requires the least amount of tree resources per unit volume in comparison to dark-fired and flue-cured ...
  4. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 53

    NNN – a suitable biomarker of exposure from smoke and new nicotine delivery products?

    PLUYM N.; TAUCHER J.; SCHERER G.; SCHERER M.
    ABF Analytisch-Biologisches Forschungslabor GmbH, Planegg, Germany
    N-Nitrosonornicotine (NNN) is believed to play a critical role in the development of cancer in tobacco users and was therefore classified by the International Agency for Research on Cancer (IARC) as a Group 1 carcinogen. Hence, urinary NNN is commonly ...
  5. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 54

    Clinical biomarkers of compliance for use in potentially reduced-risk product switching studies

    McEWAN M.(1); GALE N.(1); HARDIE G.(1); SCHERER M.(2); PLUYM N.(2); EBAJEMITO J.K.(1); CAMACHO O.M.(1); GRIFFITHS A.(1); PROCTOR C.J.(1)
    (1) British American Tobacco (Investments) Limited, Research and Development, Southampton, U.K.; (2) ABF GmbH, Planegg, Germany
    Preclinical assessments and clinical studies have shown significant reductions in toxicants in tobacco heating product (THP) aerosols compared to smoke from conventional cigarettes. Further studies to assess if these toxicant reductions translate to ...
  6. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 13

    Analysis of propylene oxide and glycidol in tobacco smoke and e-cigarette vapour

    LANDMESSER A.; SCHERER G.; PLUYM N.; SCHERER M.
    ABF Analytisch-Biologisches Forschungslabor GmbH, Planegg, Germany
    We recently performed a clinical study with e-cigarette users (vapers) and smokers. The stable-isotope labeled e-cigarette constituents propylene glycol, glycerol, and nicotine in the test e-cigarette were used in order to investigate the e-cigarette ...
  7. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, APPOST 11

    Field trials with low nicotine tobacco varieties developed by conventional breeding technique: first results

    MALPICA A.(1); EVANS W.(2); ARCHIBALD C.(3); SCOTT L.(4); GARWE D.(5); CHAMANGO A.M.Z.(6); DORLHAC de BORNE F.(7); COLARD S.(8)
    (1) Bergerac Seed and Breeding, Bergerac, France; (2) Imperial Tobacco South Africa Pvt. Ltd, Umhlanga, Durban, South Africa; (3) Alliance One International Services, Camberley, Surrey, U.K.; (4) Universal Leaf Tobacco Co., Richmond, VA, U.S.A.; (5) Tobacco Research Board (TRB), Harare, Zimbabwe; (6) Agricultural Research & Extension Trust (ARET), Lilongwe, Malawi; (7) Imperial Tobacco Limited, Bergerac, France; (8) SEITA - Imperial Brands plc, Paris, France
    In 2015, the World Health Organisation (WHO) Study Group on Tobacco Product Regulation (“TobReg”) issued an advisory note recommending a strategy of reducing nicotine in tobacco to substantially lower levels of 0.4 mg/g. In the U.S., the Food and Drug ...
  8. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, APPOST 22

    Bacterial wilt (Ralstonia solanacearum) resistant flue-cured hybrids - current Malawi situation

    SIBANDE L.A.G.O.; CHAMANGO A.M.Z.; MATEWERE M.; KHUMBANYIWA A.G.
    Agricultural Research and Extension Trust (ARET), Lilongwe, Malawi
    In Malawi, flue-cured tobacco production is negatively affected by both aerial and soil borne diseases. Bacterial wilt (Ralstonia solanacearum) is one of the major soil borne diseases that attack the crop, reducing cured leaf yield and quality. Currently ...
  9. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups (Workshop), STW 07

    Identifying suitable biomarkers of biological effects (BOBEs) for evaluating reduced risk products

    SCHERER G.; PLUYM N.; SCHERER M.
    ABF Analytisch-Biologisches Forschungslabor GmbH, Planegg, Germany
    Switching from conventional cigarettes (CCs) to reduced risk products (RRPs), such as e cigarettes, heat-not-burn and oral tobacco products, could be an effective approach for tobacco harm reduction (THR), provided that the use of RRPs effectively entails ...
  10. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 59

    An inter-laboratory comparison study focused on the determination of total NNAL in human urine

    NEWLAND K.(1); SCHERER M.(2); HECHT S.S.(3); TROUDE V.(4); PRASAD G.L.(5)
    (1) Celerion Inc., Lincoln, NE, U.S.A.; (2) ABF GmbH, Planegg, Germany; (3) University of Minnesota Cancer Center, Minneapolis, MN, U.S.A.; (4) Reemtsma Cigarettenfabriken GmbH, Imperial Brands plc, Hamburg, Germany; (5) RAI Services Company, Winston-Salem, NC, U.S.A.
    In an ongoing effort to fulfil the second objective of the CORESTA Biomarker Sub-Group, periodic inter-laboratory comparison studies have been performed to evaluate the consistency of the quantitation for various harmful or potentially harmful exposure ...