Identification of Tobacco Types and Cigarette Brands Using an Electronic Nose Based on Conductive Polymer/Porphyrin Composite Sensors

Esteves, Carina; Iglesias, Bernardo A.; Ogawa, Takuji; Araki, Koji; Hoehne, Lucélia; Gruber, Jonas

doi:10.1021/acsomega.8b00403

Cited by 34 publications

(19 citation statements)

References 41 publications

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“…The e-nose can be used to distinguish the different aroma molecules emitted from various cigarettes, indicate that one possible solution to this problem is to develop a suitable e-nose system for cigarette brands identification. Cigarette brand and tobacco analyses using the e-nose system also have been reported in the literature [ 25 , 26 , 27 , 28 ]. Cigarettes at different prices have characteristics that distinguish them from each other, and one of the most important is their odor.…”

Section: Introductionmentioning

confidence: 99%

Development of a Low-Cost Portable Electronic Nose for Cigarette Brands Identification

Zhang

Sun

et al. 2020

Sensors

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In China, the government and the cigarette industry yearly lose millions in sales and tax revenue because of imitation cigarettes. Usually, visual observation is not enough to identify counterfeiting. An auxiliary analytical method is needed for cigarette brands identification. To this end, we developed a portable, low-cost electronic nose (e-nose) system for brand recognition of cigarettes. A gas sampling device was designed to reduce the influence caused by humidity fluctuation and the volatile organic compounds (VOCs) in the environment. To ensure the uniformity of airflow distribution, the structure of the sensing chamber was optimized by computational fluid dynamics (CFD) simulations. The e-nose system is compact, portable, and lightweight with only 15 cm in side length and the cost of the whole device is less than $100. Results from the machine learning algorithm showed that there were significant differences between 5 kinds of cigarettes we tested. Random Forest (RF) has the best performance with accuracy of 91.67% and K Nearest Neighbor (KNN) has the accuracy of 86.98%, which indicated that the e-nose was able to discriminate samples. We believe this portable, cheap, reliable e-nose system could be used as an auxiliary screen technique for counterfeit cigarettes.

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Section: Introductionmentioning

confidence: 99%

Development of a Low-Cost Portable Electronic Nose for Cigarette Brands Identification

Zhang

Sun

et al. 2020

Sensors

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“…They have therefore become one of the most widely studied chemical systems and have attracted widespread attention. Because of the advantages of metalloporphyrins and porphyrins, such as easy syntheses and operations, singlet and triplet longevity, and dense light absorption and emission, they provide a very general preparation basis for a variety of materials with different applications in many physical and chemical disciplines, such as sensors (Geng et al, 2019;Esteves et al, 2018;Evyapan & Dunbar, 2016), catalysis (Tawil et al, 2019;Gangemi et al, 2017;Elhamifar et al, 2017), molecular sieves (Yao et al, 2019;Hou et al, 2014) and optoelectronics and solar cells (Samia et al, 2020;Baek et al, 2015;Pengxia et al, 2014;Yang, Lin et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

A one-dimensional manganese(III)–porphyrin coordination polymer: crystal structure and photophysical properties

Chen

2020

Acta Crystallogr C

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A novel manganese(III)-porphyrin complex, namely, catena-poly[[chloridomanganese(III)]-2 -5,10,15,20-tetrakis(pyridin-3-yl)-21H,23H-porphinato(2À)-5 N 21 ,N 22 ,N 23 ,N 24 :N 5 ], [MnCl(C 40 H 24 N 8 )] n , 1, was prepared by the hydrothermal reaction of manganese chloride with 5,10,15,20-tetrakis(pyridin-3-yl)-21H,23Hporphine. The crystal structure was determined by single-crystal X-ray diffraction. The porphyrin macrocycle exhibits a saddle-like distortion geometry. The Mn III atom has a six-coordination geometry. Each porphyrin unit links to two neighbouring units to yield a one-dimensional coordination polymer. These chains are further interlinked by hydrogen bonds to form a two-dimensional network. The complex shows red photoluminescence emission bands in ethanol solution, which can be attributed to ligand-to-ligand charge transfer (LLCT) accompanied by partial metal-to-ligand charge transfer (MLCT), as revealed by TDDFT calculations.research papers 376 Wen-Tong Chen A 1D manganese(III)-porphyrin polymer

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“…Due to the direct and fast assessment, e‐nose is an appropriate method for tea quality evaluation. Moreover, by combining with mathematical approaches, e‐nose can realize simultaneous detection of volatile compounds with high reproducibility and stability (Deshmukh, Bandyopadhyay, Bhattacharyya, Pandey, & Jana, ; Esteves et al., ; Wei, Wang, & Zhang, ). Hence, based on multivariate statistical methods and e‐nose sensor, it is an alternative to the commonly used chromatography method for tea quality assessment.…”

Section: Introductionmentioning

confidence: 99%

Quality Evaluation of Green and Dark Tea Grade Using Electronic Nose and Multivariate Statistical Analysis

Yuan

Chen

Shao³

et al. 2019

Journal of Food Science

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Aroma assessment remains difficult and uncertain in the present sensory assessment system. It is highly desirable to develop a new assessment method to discriminate the quality of various teas in the tea market. In the present work, based on linear discriminant analysis and principal component analysis, the aroma of dry and wet samples of different Xi-hu Longjing and Pu-erh teas were tested and differentiated by electronic noses (e-nose). The results confirm that e-nose can discriminate different priced Xi-hu Longjing tea samples in the range of 80-800 RMB/500 g and varying storage years of Pu-erh tea samples. Furthermore, for the detection of both dry and wet samples of Longjing and Pu-erh teas, the results reveal that all samples have specific aroma characteristics that e-nose can recognize. More importantly, contribution analysis in sensors indicates that nitrogen oxides, methane and alcohols are the characteristic components that contribute to the fragrances of different priced Xi-hu Longjing teas, while nitrogen oxides, aromatic benzene and amines make the fragrances of Pu-erh teas with different storage years disparate.Practical Application: This work demonstrates that e-nose can rapidly distinguish tea products with different price levels and varying storage years. With the advantages of ease of use, high portability and flexibility, e-nose will be widely expanded and applied in refined processing and the development of flavored foods.

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Identification of Tobacco Types and Cigarette Brands Using an Electronic Nose Based on Conductive Polymer/Porphyrin Composite Sensors

Cited by 34 publications

References 41 publications

Development of a Low-Cost Portable Electronic Nose for Cigarette Brands Identification

Development of a Low-Cost Portable Electronic Nose for Cigarette Brands Identification

A one-dimensional manganese(III)–porphyrin coordination polymer: crystal structure and photophysical properties

Quality Evaluation of Green and Dark Tea Grade Using Electronic Nose and Multivariate Statistical Analysis

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