Search Results

49 results

  1. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 04

    Regulation network of nicotine biosynthesis in tobacco: the non-coding players

    CHEN Xi(1,2); SUN S.(1,2); SHEN E.(1,2); WANG W.(1,2); LI F.(1); LIU F.(1,2); CHEN H.(1,2); YE C.(1,2); XIAO B.(3); FAN L.(1,2)
    (1) Institute of Crop Science, Zhejiang University, Hangzhou, P.R. China; (2) Institute of Bioinformatics, Zhejiang University, Hangzhou, P.R. China; (3) Yunnan Academy of Tobacco Agricultural Sciences and China Tobacco Breeding Research Center, Yunnan, Yuxi, P.R. China
    Several key gene encoding enzymes of nicotine biosynthesis and catabolism pathways have been characterized in tobacco. Non-coding RNAs (ncRNAs) are transcripts with no or low protein coding potential. ncRNAs include microRNAs (miRNAs) with a size of 20-24 ...
  2. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 01

    In vitro biological safety evaluation of cigarette smoke

    CHEN Xi(1,2); SHEN Y.(1,2); CHEN Hongyu(1,2); LIU F.(1,2); QI H.(3); JIMIN S.(3); TIMKO M.(4); FAN L.(1,2)
    (1) Research Center for Air Pollution and Health, Zhejiang University, Hangzhou, P.R. China; (2) Institute of Bioinformatics, Zhejiang University, Hangzhou, P.R. China; (3) Department of Pathology and Pathophysiology, School of Basic Medical Sciences, Zhejiang University, Hangzhou, P.R. China; (4) Department of Public Health Sciences, School of Medicine, University of Virginia, Charlottesville, VA, U.S.A.
    Traditionally, toxicological evaluation of cigarette smoke has focused on the harmful chemical content of smoke. Harm-reduced cigarettes should not only refer to these chemical compounds, but also to the degree of the effect of whole smoke on human cells. ...
  3. 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 ...
  4. 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 ...
  5. TSRC, Tob. Sci. Res. Conf., 2013, 67, abstr. 20

    A comprehensive analysis of transcriptome dynamics in tobacco (Nicotiana tabacum l.) leaves.

    LI Ruiyuan(1); FAN Longjiang(2); GUI Yijie(2); SHI Yuewei(1); WANG Zhihong(1); XI Shengdong(1); REN Xueliang(1)
    (1) Guizhou Academy of Tobacco Science, Guiyang City, P.R. China; (2) Zhejiang University, P.R. China
    By using a custom-designed microarray containing 44,873 unigenes derived from public EST libraries, the transcriptome of tobacco leaves at different stalk positions and developmental stages was investigated and analyzed for three varieties planted in two ...
  6. CORESTA Congress, Sapporo, 2012, Smoke Science/Product Technology Groups, PT 01

    Photodegradability testing of cellulose acetate filters – outdoor weathering vs. accelerated weathering

    STEACH J.K.; FISHER JONES D.
    Eastman Chemical Company, Kingsport, TN, USA
    Degradation testing in the laboratory is based on understanding a material’s exposure to specific environmental forces, which can play a key role in the mechanisms of degradation. Cellulose acetate filters can be degraded by various environmental forces, ...
  7. Tobacco Science & Technology, 2012, 9, p. 47-50, ISSN.1002-0861

    Application of electronic nose in quality control of tobacco flavor

    JIANG Jian(1); YANG Jun(1); HUANG Fangfang(1); TANG Cunxiao(2); HE Jinzhe(2); SUN Peilong(2)
    (1) China Tobacco Zhejiang Industrial Co., Ltd., Hangzhou 310009, P.R. China; (2) Food Department, College of Biology and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
    Nine tobacco flavor samples were detected by an electronic nose, the obtained data were analyzed with principal component analysis (PCA) and discriminant factor analysis (DFA). The models of quality control were established, and the quality consistency of ...