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57 results

  1. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 39

    Impact of cigarette paper and blend on super slim, slim and king-size cigarette designs

    WANNA J.(1); CHEN Cai(2); XIAO Cuicui(3); LIANG Chenze(3); RUI Li(4); ZHANG Wenjun(4)
    (1) SWM Intl., Alpharetta, GA, U.S.A.; (2) SWM Shanghai Representative Office, Shanghai, P.R. China; (3) China Tobacco Mauduit, Jiangmen, Guangdong, P.R. China; (4) China Tobacco Schweitzer, Yuxi City, Yunnan, P.R. China
    Superslim (SS) cigarettes account for 5 % of total cigarette sales on the Chinese market, with a year to year increase of 2.1 %. Similar to this fast-growing trend, many more brands of slim (SL) cigarettes have been offered on the market since 2017. To ...
  2. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 47

    Study on reducing the fragmentation rate of paper-making reconstituted tobacco during the cutting process in the cigarette factory

    ZHANG Wenjun(1); TENNIER J.(2); TU Yangang(1); ZHANG Yan(3); ZHENG Jianyu(1); ZHANG Mengyuan(1); LI Rui(1); LIU Jing(1); XIONG Zhen(1); ZHOU Guiyuan(1)
    (1) China Tobacco Schweitzer (Yunnan) Reconstituted Tobacco Co., Ltd, Yuxi City, Yunnan, P.R. China; (2) SWM Intl., Alpharetta, GA, U.S.A.; (3) Yunnan Tobacco Quality Supervision and Inspection Station, Kunming, Yunnan, P.R. China
    It is known that reconstituted tobacco leaf tends to generate dust and particles during the cutting process in the cigarette factory. To solve the issue, analysis of the composition structure of manufacturing waste was carried out. Effects on the ...
  3. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 48

    Research on colour improvement of paper-making reconstituted tobacco

    SU Dandan(1); TU Yangang(1); ZHANG Wenjun(1); TENNIER J.(2); WEI Mingwen(1); WANG Xiaosheng(1); FENG Tao(1); MI Lan(1); ZHOU Guiyuan(1)
    (1) China Tobacco Schweitzer (Yunnan) Reconstituted Tobacco Co., Ltd, Yuxi City, Yunnan, P.R. China; (2) SWM Intl., Alpharetta, GA, U.S.A.
    Paper-making reconstituted tobacco (PRT) is an important raw material for the tobacco industry, with various benefits including reducing cost, smoke tar delivery, and impact on the environment. The different appearance of PRT compared to regular cigarette ...
  4. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, STPOST 43

    In vitro micronucleus (MN) assay using TK6 cells: review of historical positive and negative control data

    STANKOWSKI L.F. Jr(1); HURTADO S.B.(1); WELLS M.M.(1); KWOK V.Y.(1); DOSHI U.(2); COFFA B.G.(2); LEE K.M.(2)
    (1) Charles River Laboratories, Genetic and In Vitro Toxicology, Skokie, IL, U.S.A.; (2) Altria Client Services LLC, Research, Development & Regulatory Affairs, Richmond, VA, U.S.A.
    TK6 human lymphoblastoid cells are widely used in the in vitro MN assay as a part of regulatory genotoxicity testing for pharmaceuticals, but have seen relatively limited use in testing of other test materials, including tobacco-related products. As an ...
  5. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, STPOST 46

    Validation of an in vitro test battery to evaluate smokeless tobacco products

    HURTADO S.B.(1); LALLIER B.(1); TYDRICK C.(1); LIU Z.(2); GUMP J.(2); BISWAS K.(2); KWOK V.Y.(1); STANKOWSKI L.F. Jr(1)
    (1) Charles River Laboratories, Genetic and In Vitro Toxicology, Skokie, IL, U.S.A.; (2) Charles River Laboratories, Analytical Chemistry, Ashland, OH, U.S.A.
    Evaluating potential cytotoxicity and genotoxicity of smokeless tobacco products poses unique challenges for in vitro testing. Each product is a complex mixture of vegetable matter, and may include a packaging component as part of the final product. ...
  6. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, STPOST 47

    Effect of ethanol concentration on chemical composition of tobacco extracts

    ZHENG Jianyu(1); LIU Changbo(1); ZHANG Wenjun(1); TENNIER J.(2); FU Yin(1); XIONG Zhen(1); CHEN Shaoquan(1); FENG Tao(1); WANG Yanhong(1); ZHOU Guiyuan(1)
    (1) China Tobacco Schweitzer (Yunnan) Reconstituted Tobacco Co., Ltd, Yuxi City, Yunnan, P.R. China; (2) SWM Intl., Alpharetta, GA, U.S.A.
    Ethanol is widely used as a solvent in the chemical, pharmaceutical, and biological industries, for the extraction of various natural products, including those from tobacco. In this study, an ethanol-water system with four different concentrations of ...
  7. CORESTA Meeting, Smoke Science/Product Technology, 2017, Kitzbühel, STPOST 44

    Validation and comparison of the neutral red uptake assay in BALB/c 3T3 and CHO-WBL cells

    HURTADO S.B; CALLUPE J.; MARTINEZ J.L.; SOOMER-JAMES J.; GROMER K.D.; KWOK V.Y.; FARABAUGH C.S.; STANKOWSKI L.F. Jr.
    Charles River Laboratories - Skokie, Skokie, IL, U.S.A.
    The neutral red uptake (NRU) assay is used to evaluate the cytotoxicity of a variety of chemicals, cigarette smoke fractions, e-liquids, medical devices, etc. in vitro. Charles River Laboratories-Skokie previously validated the NRU assay in BALB/c 3T3 ...
  8. CORESTA Meeting, Smoke Science/Product Technology, 2017, Kitzbühel, STPOST 46

    Validation and comparison of the in vitro micronucleus assay in TK6 and CHO-WBL cells

    WELLS M.; LORENZ M.; SOOMER-JAMES J.; KAYE S.L.; GROMER K.D.; BHATTACHARYA R.; OCO K.R.; KWOK V.Y.; FARABAUGH C.S.; STANKOWSKI L.F. Jr.
    Charles River Laboratories - Skokie, Skokie, IL, U.S.A.
    The in vitro micronucleus (MN) assay is used to evaluate the potential clastogenicity and aneugenicity of a variety of chemicals and agents in vitro. Charles River Laboratories-Skokie previously validated the in vitro MN assay in TK6 cells, according to ...
  9. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, ST 20

    The influence of storage conditions and packaging on acetic acid generation in cellulose acetate fibers

    TATUM C.E.; WILSON S.A.; CASPER R.G.; PEARCE M.J.
    Eastman Chemical Company, Kingsport, TN, U.S.A.
    The cellulose acetate polymer used in cigarette filters is made by acetylating wood pulp with acetic anhydride. One advantage of this modified natural polymer is that it readily degrades by multiple mechanisms. While the ultimate products are carbon ...
  10. TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 07

    Comparison of the cerulean e-cigarette pressure drop testing instrument to the ces 508 cigarette pressure drop and ventilation tester unit for electronic cigarettes, conventional tobacco burning cigarettes, and filter tips

    AVANTS K.W.(1); WILSON S.A.(2); CLARK J.(1)
    (1) Liggett Group, LLC, Mebane, NC USA; (2) Eastman Chemical Company, Kingsport, TN USA
    The pressure drop or “resistance to draw” of cigarettes and cigarette-like products is a prominent experience for consumers. This poster is a comparison of two commercial instruments with different approaches to measuring pressure drop. The instruments ...