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Zhang Y.,China Tobacco Anhui Industrial Co. | Wang L.,China Tobacco Anhui Industrial Co. | Cui L.,China Tobacco Anhui Industrial Co.
Tobacco Science and Technology | Year: 2016

To minimize energy consumption caused by idle running, preheating process and excess negative pressure supplying to the pneumatic conveying system in tobacco primary processing line, the running mode of equipment was optimized as following: 1) The control units in main equipment were finely divided, and the startup of downstream auxiliary equipment control unit was triggered by tobacco presence signal. 2) Optimizing PID parameters and the control means for steam condensate exhaust and accelerating equipment preheating to avoid auxiliary equipment's idle running. 3) Adopting frequency conversion automatic control technology to ensure the match between the number of running cigarette makers and the frequency of fan motor. The results indicated that: tobacco primary processing line ran stably under energy saving mode, the whole production line could all start up without material, and auxiliary equipment started up by tobacco presence signal and stopped once empty of tobacco. 423.6 thousand kW·h of electric power and 1311.8 tons of steam, valued more than 640 thousand RMB yuan, were saved per year. The cost of equipment running was reduced effectively. © 2016, Editorial Office of Tobacco Science and Technology. All right reserved.

Shao W.,China Tobacco Anhui Industrial Co. | Chen J.,China Tobacco Anhui Industrial Co. | Liu Y.,China Tobacco Anhui Industrial Co.
Tobacco Science and Technology | Year: 2016

When the stem cutter SQ3X cut high pressure steam processed stems, sticky matter tends to adhere to the grinding wheel and results in blunt knives and unqualified cut stem thickness. Therefore, a device for cleaning the grinding wheel was designed. The said device adopted vortex tube as a heater, the hot air came out of the vortex tube dried the sticky matter and forced it to flake off the grinding wheel, proper grinder dressing was ensured. A function block of temperature control program was established in the PLC of the stem cutter to control and adjust the temperature at grinding area automatically and real-timely. The results showed that after improvement, the amount of stems adhered to the grinding wheel reduced effectively, the knife blades were well sharpened. When the temperature at grinding area was set at 80℃, the electric current of knife drum motor decreased from 76.2 A to 43.2 A, the qualified rate of cut stem thickness increased from 70% to 90%. The performance of stem cutter is promoted effectively. © 2016, Editorial Office of Tobacco Science and Technology. All right reserved.

Zhang X.,China Tobacco Anhui Industrial Co. | Tian Z.,China Tobacco Anhui Industrial Co. | Zhu Q.,China Tobacco Anhui Industrial Co. | Xu Z.,China Tobacco Anhui Industrial Co. | Hu Y.,China Tobacco Anhui Industrial Co.
Tobacco Science and Technology | Year: 2016

In order to prepare oxygen-containing heterocyclic flavor and evaluate its flavoring effect in cigarette, a flue-cured tobacco sample was pyrolyzed by a furnace-type pyrolyzer and the particulate matters were collected by Cambridge filter pads under the heating temperature of 200℃, 250℃ and 300℃ with collection times of 5, 10 and 20 min. The effects of the pyrolysis conditions on the formation of oxygen-containing heterocyclic compounds were investigated by GC/MS method. Pyrolysis products were separated by using C18 chromatographic column and eluted with different concentrations of ethanol. The optimal eluate was determined by TOF/MS analysis and olfactory evaluation to determine flavoring effect. The results indicated that: 1)Under the optimal pyrolysis condition of temperature 250℃ and collection time 10 min, the yields of oxygen-containing heterocyclic compounds (such as furfural, 5-methylfurfural and 2, 3-dihydro-3, 5-dihydroxy-6-methyl-4H-pyran-4-one), which were known to significantly enhance the burnt-sweetness scent of cigarette smoke, were the highest. 2)Comparing with the eluates of 20% and 30% ethanol solutions, those of water, 5% and 10% ethanol solutions contained more oxygen-containing heterocyclic compounds with higher concentrations and clear burnt-sweetness scent. 3)After flavoring with the 10% ethanol eluate of pyrolysis product obtained under the optimal pyrolysis conditions, the cigarette smoke featured an outstanding burnt-sweetness scent; the smoothness, sweetness, aroma, and abundance of cigarette smoke were promoted, and irritation and dryness of the smoke were reduced, and offensive odor was masked. © 2016, Editorial Office of Tobacco Science & Technology. All right reserved.

PubMed | China Tobacco Anhui Industrial CO. and Anhui Agricultural University
Type: Journal Article | Journal: International journal of environmental research and public health | Year: 2016

The present study investigated the influence of the cigarette smoke extract (CSE) on mammalian thioredoxin reductase (TrxR) activity. TrxR is a selenoenzyme with a selenocysteine (Sec) residue exposed on the enzymes surface. This unique Sec residue is particularly susceptible to modification by numerous types of electrophiles, leading to inactivation of TrxR and consequent cytotoxicity. Cigarette smoke contains various electrophiles, and the present study showed that CSE could inhibit intracellular TrxR through causing crosslinking and alkylation of TrxR1. TrxR inhibitory capacities of various CSEs were evaluated by using mouse-liver homogenate. Among the CSEs prepared from 18 commercial cigarette brands, TrxR inhibitory capacities of the maximum and the minimum had a 2.5-fold difference. Importantly, CSEs inhibitory capacity greatly paralleled its cytotoxic potency in all cell lines used. Compared to cytotoxic assays, which have been widely used for evaluating cigarette toxicity but are not suitable for simultaneously examining a large number of cigarette samples, the present method was simple and rapid with a high-throughput feature and thus could be used as an auxiliary means to predict the cytotoxicity of a large number of cigarette samples, making it possible to extensively screen numerous agricultural and industrial measures that potentially affect cigarette safety.

PubMed | Hefei University of Technology, China Tobacco Anhui Industrial CO. and University of Electronic Science and Technology of China
Type: | Journal: Carbohydrate polymers | Year: 2015

A method was developed for rapid quantitative determination of cellulose in tobacco by utilizing (13)C cross polarization magic angle spinning NMR spectroscopy ((13)C CP/MAS NMR). Sample powder was loaded into NMR rotor, which was customized rotor containing a matched silicon tube as an intensity reference. (13)C CP/MAS NMR spectra of tobacco samples were processed with spectral deconvolution to obtain the area of the C-1 resonance at 105.5ppm and the internal standard at 0ppm. The ratio between the area of 105.5ppm and 0ppm of a set of standard cellulose samples was used to construct a calibration curve. The cellulose content of a tobacco sample was determined by comparison of the ratio between the area of 105.5ppm and 0ppm to the calibration curve. Results of this developed method showed good agreement with those obtained from chemical analysis. The proposed method has such advantages of accuracy, quickness and efficiency, and could be an alternative to chemical analyses of cellulose.

Liu J.,China Tobacco Anhui Industrial Co. | Yang B.,Staff Development Institute of CNTC | Zhou Y.,Qinhuangdao Tobacco Machinery Co.
Tobacco Science and Technology | Year: 2014

Aiming at the problems of high breakage and poor processing durability of expanded cut tobacco by traditional CO2 expanded cut tobacco processing, a steaming preconditioning discharger was added next to the expansion tower, which moistened the tobacco as it left the tower. Steam was injected into the compartments in the airlock discharger through uniformly distributed nozzles, to allow the tobacco entering into the airlock being evenly humidified and loosed. The results of application showed that after improvement, the percentage of long strands and cut tobacco yield increased by 1.5 and 0.75 percentage points, respectively. Water stained tobacco was avoided in the process of humidifying. The processing durability of expanded cut tobacco was effectively improved, while the breakage of cut tobacco was reduced.

KeLing H.,Anhui University | Ling Z.,Anhui University | JiTao W.,China Tobacco Anhui Industrial Co. | Yang Y.,Anhui University
Acta Societatis Botanicorum Poloniae | Year: 2013

The objective of this study was to investigate the effect of exogenous selenium (Se) supply (0, 2, 4, 8, 16 μM) on the growth, lipid peroxidation and antioxidative enzyme activity of 100 mM NaCl-stressed melon (Cucumis melo L.) seedlings. Salt stress significantly reduced the growth attributes including stem length, stem diameter, dry weight and increased antioxidative enzyme activity [superoxide dismutase (SOD), peroxidase(POD), catalase (CAT)]. Moreover, the plant exhibited a significant increase in electrolyte leakage and malondialdehyde (MDA) content under NaCl stress. Se supplementation not only improved the growth parameters but also successfully ameliorated the adverse effect caused by salt stress in melon seedlings. However, the mitigation of NaCl-stressed seedlings was different depending on the Se concentration. At lower concentrations (2-8 μM), Se improved growth and acted as antioxidant by inhibiting lipid peroxidation and increasing in SOD and POD enzymes activity under salt stress. At higher concentrations (16 μM), Se exerted diminished beneficial effects on growth. Whereas CAT activity was enhanced. The result indicated that Se supplementation had a positive physiological effect on the growth and development of salt-stressed melon seedlings. © The Author(s) 2013.

Pan Y.,Anhui University of Science and Technology | Hu Y.,China Tobacco Anhui Industrial Co | Wang J.,Anhui University of Science and Technology | Ye L.,Anhui University of Science and Technology | And 2 more authors.
Analytical Chemistry | Year: 2013

A newly developed, qualitative and quantitative method based on tunable synchrotron radiation vacuum ultraviolet photoionization time-of-flight mass spectrometry (SR-VUV-PI-TOFMS) and photoionization efficiency (PIE) curve simulation was applied for the online analysis of isomers and isobaric compounds in the gas phase of mainstream cigarette smoke. After blocking the particulate phase components by the Cambridge filter pad, a puff of fresh gas-phase cigarette smoke was immediately introduced into a vacuum ionization chamber through a heated capillary, then was photoionized, and analyzed by a TOF mass spectrometer. The PIE curves for the mass peaks up to m/z = 106 were measured between 8.0 and 10.7 eV. Some components could be directly identified by their discriminated ionization energies (IEs) on the PIE curve. By simulating the PIE curve with the sum of scaled absolute photoionization cross sections (PICSs), complex isomeric/isobaric compounds along with their mole fractions could be obtained when the best-fitting was realized between experimental and simulated PIE curves. A series of reported toxic compounds for quantification, such as 1,3-butadiene (m/z = 54), 1,3-cyclopentadiene (m/z = 66), benzene (m/z = 78), xylene (m/z = 106), 2-propenal (m/z = 56), acetone and propanal (m/z = 58), crotonaldehyde (m/z = 70), furan and isoprene (m/z = 68), were all found to have other isomers and/or isobaric compounds with considerable abundances. Some isomers have never been reported previously in cigarette smoke, like C 5H6 isomers 1-penten-3-yne, 3-penten-1-yne, and 1-penten-4-yne at m/z = 66. Isomeric/isobaric compounds characterization for the mass peaks and mole fraction calculations were discussed in detail below 10.7 eV, an energy value covering several conventional used VUV light sources. © 2013 American Chemical Society.

Shao W.,China Tobacco Anhui Industrial Co. | Chen L.,China Tobacco Anhui Industrial Co. | Tang B.,China Tobacco Anhui Industrial Co. | Wang Y.,China Tobacco Anhui Industrial Co.
Tobacco Science and Technology | Year: 2014

The hot air system adopting simple PID control in primary processing line cannot adapt to the requirements of different processing technologies, therefore the control system was improved with fuzzy control algorithm. A fuzzy controller for hot air temperature was designed by adopting PLC of series S7-400, the input and output variables of fuzzy controller were determined coupling with measuring range switching. The values for each variable in fuzzy language and relevant membership functions were also determined. The rules of fuzzy control were established, and the hot air temperature system was controlled according to the requirements of the PID parameters of fuzzy control system. The results of application showed that: the fuzzy control system featured fast startup, steady temperature output, minor over regulation. The temperature of hot air could be controlled within setting value ±0.5°C. When the setting value of hot air temperature was changed, the control system responded quickly and steadily, the stability and control precision of hot air control system were improved.

Yao D.,China Tobacco Anhui Industrial Co.
Tobacco Science and Technology | Year: 2015

In order to avoid the flavoring or casing being added to wrong tobacco due to the lack of real-time material information transferring in primary processing line, a Profinet-based mobile Radio Frequency Identification (RFID) control system for flavoring and casing was developed. Wherein an RFID reader was linked to a distributed I/O system through a gateway module and communicated with a master PLC via Profinet. The RFID reader read the information labelled on the flavoring/casing tanks and vehicles, and automatically transferred it to the I/O system and PLC. The realization of automatic read, recognition and identification of vehicle number, tank number, the flavor/casing in tank and the tobacco to be treated ensured the integrity and accuracy of production information and quality information in the process of flavoring and casing, and free the flavor or casing from being added to wrong tobacco. ©, 2015, Editorial Office of Tobacco Science and Technology. All right reserved.

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