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  1. CORESTA Congress, Online, 2022, Agronomy/Phytopathology Groups, AP 54

    Quality differences of flue-cured tobacco leaf from the southern Yunnan Gold Corridor Tobacco Cultivation Region and its environmental interpretation

    WANG Lan(1); GAO Weikai(2); YANG Jun(1); XIE Bing(1); LIN Xin(1); XIAO Jingyi(1); LI Zhouwen(2)
    (1) Yunnan Reascend Tobacco Technology (Group) Co., Ltd., Kunming, China; (2) China Tobacco Guangdong Industrial Co., Ltd., Guangzhou, China
    Tobacco planting is especially responsive to the environment mainly due to the impacts of soil fluctuations on quality and quantity. The availability of environment realisations with an adequate accuracy is an essential component of tobacco...
  2. CORESTA Congress, Online, 2022, Smoke Science/Product Technology Groups, ST 12

    Assessment of potential atomisation agents on capacity of aroma delivery in e-liquid

    LIU Shengyi; ZHU Libing; DOU Jinxi; LIU Weijuan
    (1) Ruvian Technology Ltd., Kunming, China; (2) Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming, China
    Propylene glycol (PG) and glycerin (VG) are two commonly used humectants in e-liquid. To determine a possible substitute that performs equally to PG/VG or functions better as an aerosol forming agent and carrier of aroma constitutes, compounds were...
  3. CORESTA Congress, Online, 2022, Smoke Science/Product Technology Groups, ST 61

    A comparative study on delivery of nicotine, humectants and endogenous aroma constituents from reconstituted tobacco materials in granule and sheet form under heat-not-burn condition

    LIU Shengyi; ZHU Libing; DOU Jinxi; LIU Weijuan
    (1) Ruvian Technology Ltd., Kunming, China; (2) Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming, China
    There are a great variety of heat-not-burn products (HnBs) available on the market. The heating devices are various and the tobacco materials in heating rods also come in different forms. To determine the delivery of the nicotine and endogenous...
  4. CORESTA Congress, Online, 2022, Smoke Science/Product Technology Groups, ST 80

    Analysis of absorption hysteresis of different cigarette blends based on adsorption thermodynamics method

    QIU Changgui(1,2); LIU Ze(3); WEI Qing(1); HE Banghua(3); YANG Qianxu(3); LIU Jing(1,2); LI Siyuan(4); WANG Zeyu(4); ZUO Wen(4); YANG Lan(4); GUO Miaomiao(3)
    (1) Yunnan Reascend Tobacco Technology (Group) Co., Ltd., Kunming, China; (2) Yunnan Comtestor Co., Ltd., Kunming, China; (3) China Tobacco Yunnan Industrial Co., Ltd., Kunming, China; (4) Hongyun Honghe Tobacco (Group) Co., Ltd., Kunming, China
    In order to study the isothermal adsorption characteristics for cut tobacco, cut stem and cut reconstituted tobacco, the adsorption hysteresis was quantified using the definite integral expression of GAB model, and the isosteric adsorption heat of...
  5. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 05

    Determination of 10 kinds of polycyclic aromatic hydrocarbon in the aerosol of heat-not-burn products by SPME-GC-MS

    SHEN Junyu; LIU Xin
    Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming, P.R. China
    Polycyclic aromatic hydrocarbons are low in mainstream tobacco smoke, but they are among the most hazardous substances and have been shown to be carcinogenic in a number of studies. One polycyclic aromatic hydrocarbon is benzo[a]pyrene, which has...
  6. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 07

    Quantitative determination and puff-by-puff analysis on the release pattern of nicotine and menthol in heat-not-burn tobacco material and emissions

    LIU Shengyi; LI Jingjing; ZHU Libing; LIU Weijuan
    (1) Ruvian Technology Ltd., Kunming, P.R. China; (2) Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming, P.R. China
    There is a lack of description of nicotine strength in current available heat-not-burn (HnB) tobacco products. Three HnB products were studied regarding the occurrence of nicotine in their tobacco and menthol flavoured cigarettes, and menthol in...
  7. 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...
  8. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 10

    A study on production and delivery of volatile aroma substances from heat-not-burn products’ tobacco material to emissions

    LI Jingjing; LIU Shengyi; ZHU Libing; LIU Weijuan
    (1) Ruvian Technology Ltd., Kunming, P.R. China; (2) Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming, P.R. China
    Volatile substances in emissions from heat-not-burn (HnB) products contribute to sensory quality. These substances including aldehydes, ketones, alcohols, and esters. To better understand the production and delivery of volatile substances, volatile...
  9. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 27

    The research and application of systematic technologies for reducing tobacco specific nitrosamines in tobacco and cigarette smoke

    BAI Ruoshi(1); ZHOU Jun(1); YANG Chunlei(2); SHI Hongzhi(3); LIU Weijuan(4); XU Tongguang(1); MA Yanjun(1); LIU Xingyu(1); YANG Jinpeng(2); WANG Jun(3); ZHANG Jie(1); YANG Zhendong(1); ZHENG Xiaoman(1); ZHANG Chen(1)
    (1) Technical Center of Beijing Cigarette Factory, Shanghai Tobacco Group Co., Ltd, Beijing, P.R. China; (2) Hubei Tobacco Research Institute, Wuhan, P.R. China; (3) Henan Agriculture University, Zhengzhou, P.R. China; (4) Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming, P.R. China
    Reduction of tobacco specific nitrosamines (TSNAs) in tobacco and cigarette smoke is a research hotspot. The systematic technologies for reducing TSNAs in both agricultural and industrial areas were developed and applied. The TSNA levels for the...
  10. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, APPOST 14

    Study on the detection and automatic diagnosis of tobacco diseases based on machine vision and machine learning

    ZHANG Jianqiang; LIU Weijuan; HOU Ying; LI Changyu
    Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming, Yunnan, P.R. China
    Tobacco disease diagnosis in China at present mostly remains in the artificial stage, with such problems as poor objectivity and low efficiency. A novel tobacco disease detection and automatic diagnosis system based on machine vision and machine...