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Tobacco Science
and Technology

Tobacco Science
and Technology

Tobacco Science and Technology

Volume 56 , Issue 06

25 Sep 2023

SUBMISSION DEADLINE

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Volume - 56 , Issue 06

30 Sep 2023

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Tobacco Science and Technology

Research progress on factors and regulation techniques influencing phenol release in cigarette smoke

In order to clarify the reasons for the good smoke release characteristics of IQOS, the factors that are beneficial to the smoke release characteristics of IQOS were studied by comparing the K (the amount of released smoke was less) and IQOS. The components of IQOS and K which were easy to be released were characterized by the GC-MS. The thermal release characteristics of IQOS, K and the original tobacco powders of K were characterized by the thermogravimetric analyzer (TG). The main compounds of the released smoke of IQOS and K were characterized by Py/GC-MS at two typical heating temperat

Identification and validation of nicotine related miRNAs in tobacco

Cigarette smoking increases risk for multiple diseases. MicroRNAs (miRNAs) regulate gene expression and may play a role in smoking-induced target organ damage. We sought to describe a miRNA signature of cigarette smoking and relate it to smoking-associated clinical phenotypes, gene expression, and lung inflammatory signaling. Expression profiling of 283 miRNAs was conducted on whole blood-derived RNA from 5,023 Framingham Heart Study participants (54.0% women, mean age 55±13 years) using TaqMan assays and high-throughput RT-qPCR. Associations of miRNA expression with smoking status and ass

Effects of cigarette filter design on release behavior of monomer flavor in breakable capsule

This paper describes the effects of non-tobacco, physical cigarette design features on smoke emissions, product appeal, and smoking behaviors – 3 factors that determine smoker’s exposure and related health risks. We reviewed available evidence for the impact of filter ventilation, new filter types, and cigarettes dimensions on toxic emissions, smoker’s perceptions, and behavior. For evidence sources we used scientific literature and websites providing product characteristics and marketing information. Whereas filter ventilation results in lower machine-generated emissions, it also lea

Sequencing and analysis of mitochondrial genome of Lasioderma serricorne

In this study, the complete mitochondrial genome of the Lasioderma serricorne was sequenced and analysed. The mitochondrial genome is 14,476 bp long and contains 13 protein-coding genes, two rRNA genes, 22 tRNA genes, and two non-coding region. Twenty three genes were found to be encoded by the majority strand and the other 14 genes by minority strand, those similar to that of other insects. The nucleotide compositing of the majority strand is 39.74% of A, 11.20% of C, 40.47% of T, and 10.39% of G. The phylogenetic analysis by maximum-likelihood (ML) method revealed that the L. serricorne

Design and application of control strategy for moisture content in redried tobacco strips packed in cases

To study the rewetting characteristics of tobacco strips during the redrying stage, a conjugate heat and mass transfer model of tobacco strips was established based on their physical properties. The fundamental relationship between the multiphysical fields and humidity fields of tobacco strips and the key process parameters was considered in this model, and the feasibility of the model was verified via experiments. Based on this model, the transfer and variation laws of the moisture content, humidification rate, and temperature of tobacco strips under different relative humidity and tempera

Method for release inspection of cigarette capsules with bubble defects

Smoking article inspection systems configured to inspect smoking articles are provided. The systems may include imaging devices configured to capture images of an exterior of the smoking article and an analysis unit configured to analyze the images captured by the imaging devices. The analysis unit may execute an edge detection tool configured to determine a position of the smoking article based on an edge location of the smoking article and a defect detection tool configured to determine whether the smoking article is defective after the position of the smoking article is determined. The i

Simultaneous detection of four tobacco-infecting viruses by multiplex RT-PCR

Tobacco bushy top disease is a complex disease caused by mixed infection of Tobacco bushy top virus (TBTV), Tobacco vein distorting virus (TVDV), satellite RNA of TBTV (Sat-TBTV) and Tobacco vein distorting virus associate RNA (TVDVaRNA). A one-tube multiplex reverse transcription-PCR (RT-PCR) assay was developed for simultaneous detection of the four causal agents of the disease. Four pairs of specific primers based on the conserved regions of each of the four disease agents were used in the one-tube RT-PCR. The RT-PCR products consisted of fragments of 1049 base pairs (bp) for TBTV, 792bp

Design of accurate correlation system for QR code information of products of cigarette packing line

This study employs the EIQ analysis approach to quantitatively examine the real order data of the cigarette distribution center in an effort to further increase the efficiency of cigarette sorting and distribution. To further increase the accuracy and efficiency of sorting labor, a sorting system based on QR code information and an accurate identification algorithm is proposed with the use of statistical data and the associated planning scheme. According to the system simulation findings, the sorting efficiency of the system’s sorting line is 18570 pieces per hour. However, by adding pack

Threshing and redrying technology based on typical mechanical characteristics of tobacco leaves of cv.

The invention discloses a threshing and redrying method for reducing the stem content in strips and a stemming tool, belonging to the technical field of threshing and redrying of tobacco industry. The stemming of the tobacco leaves with the water content of 16 to 17 percent is carried out under the conditions of the environmental temperature of 18 to 25 DEG C and the humidity of 60 to 70 percent;the size of a frameset of a threshing machine unit is adjusted to a larger grade, the rotation speed of a threshing roller of the threshing machine unit is reduced by 5 to 10 percent, the rotation s

Determination of eight cooling agents in tobacco materials for heated tobacco products by gas chromatography-mass spectrometry

Glycerin and propylene glycol are the main components of the atomizing agent in heat-not-burn tobacco products (HnB), which affect the smoke release of HnB significantly. In this study, the roles of the glycerin and propylene glycol as the atomizing agent on smoke release of HnB were studied by using a fixed-bed reactor system. The effects of glycerin to propylene glycol ratio in the atomizing agent, and the content of atomizing agent in the HnB were investigated. Gas chromatographymass spectrometer (GC-MS) was used to analyze the condensable components in the released smoke, and gas chroma