Search Results

124 results

  1. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 23

    A statistical analysis of variability in polyaromatic hydrocarbons (PAHs) from reference and commercial cigarettes

    WAGSTAFF W.; RICKERT W.; JOZA P.
    Labstat international ULC, Kitchener, Ontario, Canada
    This study was conducted to characterize the variability of mainstream PAH emissions data and to investigate the ability to detect differences amongst products. The mainstream yields of a reference cigarette (Kentucky Reference 3R4F) were obtained for a ...
  2. TSRC, Tob. Sci. Res. Conf., 2018, 72, abstr. 049

    Assessment of in vitro toxicity/genotoxicity of ends and combustible products

    JORDAN K.(1); BOMBICK B.(1); COOPER B.(1); LEVERETTE R.(1); SHUTSKY T.(1); WEST C.(1); STRASSER J.(1); ROUND E.(1); MARANO K.M.(1); MOMIN R.(2); TRIVEDI A.(2); WAGSTAFF W.(2); BRUCE S.(3); DAKOULAS E.(3); ROY S.(3)
    (1) RAI Services Company, Winston-Salem, NC, USA; (2) Labstat International ULC, Kitchener, ON, Canada; (3) BioReliance Corp, Rockville, MD, USA
    In May 2016, the U.S. Food and Drug Administration Center for Tobacco Products (CTP) issued draft guidance for Premarket Tobacco Product Applications (PMTA) for Electronic Nicotine Delivery Systems (ENDS), which recommends inclusion of in vitro toxicology ...
  3. CORESTA Meeting, Smoke Science/Product Technology, 2017, Kitzbühel, ST 19

    An alternative strategy for the determination of pH values of aerosol from electronic cigarettes

    JOZA P.; MOHAMMAD A.; RICKERT W.S.
    Labstat International ULC, Kitchener, ON, Canada
    Any pH determination to measure the effective acid-base properties of an aerosol is dependent on the measurement technique. Determinations of aerosol pH using puff-by-puff collections are influenced by the buffer used to condition the electrode, while ...
  4. TSRC, Tob. Sci. Res. Conf., 2017, 71, abstr. 047

    The impact of 2, 4-dinitrophenylhydrazine (DNPH) background in the determination of carbonyls compounds in e-cigarette vapor

    DONISA C.; JOZA P.; RODRIGUEZ-LAFUENTE A.; RICKERT W.S.
    Labstat International, Kitchener, ON, Canada
    Carbonyl compounds, are known to be present in some e-liquid formulations and can be formed during aerosol generation. Analysis of these compounds, as their hydrazones (2,4-dinitrophenylhydrazine; DNPH) are routinely performed using high performance ...
  5. TSRC, Tob. Sci. Res. Conf., 2017, 71, abstr. 087

    Analysis of organic acid content in e-liquids and e-cigarette aerosol by high performance liquid chromatography – ultraviolet detection (HPLC-UV)

    RODRIGUEZ-LAFUENTE A.; LODEVICO R.; SHARIFI M.; JOZA P.; RICKERT W.S.
    Labstat International, Kitchener, ON, Canada
    Weak organic acids can be used as preservative agents, potentially affecting the stability of e-cigarette solutions. However, they can also impact characteristics like the aroma and taste of aerosols. The objective of this study was to develop and ...
  6. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, AP 54

    The regulation of autophagy of susceptible Nicotiana tabacum under tobacco mosaic virus infection

    YANG Jinguang(1); LIU Xaingfu(1); LIU Wei(1); QIAN Yumei(1); ZHANG Jing(2); LI Wei(2); DONG Shifei(2); WANG Yaofeng(3); HUANG Mingdi(4); WANG Fenglong(1)
    (1) Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Qingdao, P.R. China; (2) Hongyun Honghe Tobacco (Group) Co., Ltd., Kunming, P.R. China; (3) Qingyang Branch of Gansu Province Tobacco Company, Xifeng, P.R. China; (4) Longnan Tobacco Company, Gansu Tobacco Cooperation, Wudu 746000, P.R. China
    Autophagy (or self-eating) is an important conserved process by which eukaryotic cells recycle intracellular components. This study was undertaken to elucidate whether tobacco mosaic virus (TMV) infection on tobacco plants induced autophagy. TMV-U1 and ...
  7. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, ST 43

    Analysis of nicotine and nicotine related substances in electronic cigarette refill solutions and aerosols by liquid chromatography-tandem mass spectrometry

    LIU X.; JOZA P.; RICKERT W.S.
    Labstat International ULC, Kitchener, Ontario, Canada
    The objective of this study was to develop and validate an analytical method for determining nicotine, and nicotine related compounds (i.e. nicotine-N-oxide, cotinine, nornicotine, anatabine, myosmine, anabasine, and ß-nicotyrine) in e-cigarette aerosols ...
  8. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, ST 47

    An alternative strategy for the determination of metals in the aerosol from electronic cigarettes

    JOZA P.; DONISA C.; RICKERT W.S.
    Labstat International ULC, Kitchener, Ontario, Canada
    Methods for the determination of metals in mainstream cigarette smoke, in general, have limited flexibility and are susceptible to sporadic high levels of background contamination when applied to the collection of aerosol from electronic devices. To ...