Search Results

521 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 50

    Reducing nicotine in Burley tobacco by combining low alkaloid varieties and agronomic practices

    FISHER A.M.; FISHER C.R.; JI H.
    University of Kentucky, Lexington, KY, U.S.A.
    The United States Food and Drug Administration (FDA) has requested comments on a possible nicotine standard of 0.3-0.5 mg/g in tobacco filler. There are currently no publicly available varieties that approach this level. The objective of this study was to ...
  2. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 15

    Crystal structure of nicotine gentisate and its permeability in pig buccal mucosa

    YANG Ji; MIAO Mingming; CHEN Yongkuan; LIU Zhihua; ZHAO Yang; WU Yiqin; LIU Chunbo; YANG Liu; ZHAO Hui; SHEN Qinpeng; DUAN Yuanxing; GONG Xiaowei
    R&D Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming, P.R. China
    Nicotine compound salt has been widely concerned recently with the continuous expansion of the e-cigarette market. Synthetic nicotine organic acid salt or nicotine complex, instead of monomeric nicotine, is used in the formulation of the next generation ...
  3. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 27

    Determination of petroleum ether extracts in flue-cured tobacco leaves by NIR combined with random frog wavelength selection method

    QIU Changgui(1,2); LIU Ze(3); CHEN Shi(4); LIU Jing(1,2); WANG Jiajun(3); ZHANG Wen(1,2); YANG Panpan(1,2)
    (1) Yunnan Reascend Tobacco Technology (Group) Co., Ltd., Kunming, P.R. China; (2) Yunnan Comtestor Company, Kunming, P.R. China; (3) Technology Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming, P.R. China; (4) Bijie Cigarette Factory, China Tobacco Guizhou Industrial Co., Ltd., Bijie, P.R. China
    In order to improve the prediction accuracy and model stability for quantitative calibration in near infrared spectroscopy, the random frog wavelength selection method combined with partial least squares (PLS) was employed to establish the prediction ...
  4. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 42

    Study on aerosol deposition in the respiratory tract of consumers using cigarette, electronic cigarette or heat-not-burn product

    CUI Huapeng(1); LI Yawen(1); FAN Meijuan(1); CHEN Li(1); SI Xiaoxi(2); HAN Jingmei(2); CAI Junlan(1); LI Xiang(1); LIU Shaofeng(1); XIE Fuwei(1); XIE Jianping(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China; (2) R&D Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming, P.R. China
    The deposition of aerosols inhaled into the human respiratory tract is key to evaluate exposure and risk during product use. A method based on a differential mobility spectrometer (DMS) was established for determining the physical properties of smoke ...
  5. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 64

    Analysis of cylinder drying intensity on cut strips based on Enthalpy method

    LIU Ze(1); LU Duanfeng(2); LI Bin(2); ZHU Yong(1); TANG Jun(1); ZHOU Bing(1); FU Liang(1); YANG Qianxu(1); HE Banghua(1)
    (1) R&D Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming, P.R. China; (2) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China
    Cylinder drying of cut strips is one of the key technologies during the cigarette manufacturing process, which involves complex mass transfer and heat transfer phenomena. In order to study the actual cut strip heating and heat distribution in the cylinder ...
  6. TSRC, Tob. Sci. Res. Conf., 2019, 73, abstr. 042

    Determination of amounts of harmful substances migrating from plastic assemblies in electronic cigarettes

    FAN Meijuan(1); PAN Lining(1); CUI Huapeng(1); DUAN Yuanxing(2); LIU Yibo(3); NIU Jiajia(1); MAO Youan(4); CHEN Li(1); GUO Junwei(1); LIU Shaofeng(1); WANG Hongbo(1); LIU Huimin(1); ZHAO Le(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China; (2) Technology Center of China Tobacco Yunnan Industrial, Kunming, P.R. China; (3) Technology Center of China Tobacco Guangdong Industrial, Guangzhou, P.R. China; (4) Technology Center of China Tobacco Hunan Industrial, Changsha, P.R. China
    Plastic materials are widely used in assemblies of e-cigarettes. Plastic materials shall not transfer harmful substances to the content of e-liquid in quantities which change the composition of the e-liquid or the aerosol and thereby increase the risk for ...
  7. TSRC, Tob. Sci. Res. Conf., 2019, 73, abstr. 052

    Relationship of alkaloids, PON, TSNAs, nitrate and nitrite: a two-year field analysis

    WU YING; JI HUIHUA; JACK FISHER A.; FANNIN F.; CHATTOPADHYAY N.; BUSH L.
    University of Kentucky, Lexington, KY, USA
    Tobacco-specific nitrosamines (TSNAs) are a class of nitrosamines that are included in the FDA’s Harmful and Potentially Harmful Constituents (HPHC) list. Two of these, Nʹ-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) ...
  8. TSRC, Tob. Sci. Res. Conf., 2019, 73, abstr. 101

    Characterization of the bacterial community associated with smokeless tobacco reference products under different storage conditions

    LIU SHUANG; GREENHUT I.; MOE L.
    University of Kentucky, Lexington, KY, USA
    In this study we characterize the bacterial communities associated with smokeless tobacco reference products (STRP), including loose leaf chewing tobacco (3S1), moist snuff (3S3), American snus (1S5), and Swedish snus (1S4) during a 1-year storage period. ...