A methodology for predicting proximate and ultimate analysis data was developed by using near-infrared spectroscopy (NIR) combined with chemometric methods. The quantitative model has high accuracy, as evidenced by low root-mean-square-error of prediction (RMSEP) values (e.g., 0.41% for volatile matter and 0.29% for carbon). The model was further applied to tobaccos with distinct aroma profiles, and the predicted ultimate and proximate data lead to aroma classification with 86.6% accuracy. This methodology can be expanded to the aroma discrimination of imported tobaccos from Brazil, the United States, Canada, and Zimbabwe, demonstrating its broad reliability. Compared with traditional analyses, this NIR-based approach offers a fast and accurate method for large-scale tobacco evaluation, highlighting its potential for enhancing tobacco quality characterization through a quantifiable, digital, and high-throughput process.

Curing of tobacco

Proximate

10.1021/acsomega.4c05472

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Prediction of Proximate and Ultimate Characters of Flue-Cured Tobacco Based on Near-Infrared Spectroscopy and Chemometrics

Yuhan Peng Yiming Bi Shitou Li Qingxiang Li Hui Wang

An accurate, rapid, and nondestructive methodology based on Near-Infrared Spectroscopy for tobacco quality evaluation was proposed in this study. Firstly, combined with chemometrics methods, quantitative models were established to predicate proximate and elemental compositions using NIR spectroscopy data of large amount of flue-cured tobacco species. High prediction accuracy or low RMSEP were realized for volatile matter, fixed carbon, ash, and C, O, N content of these tobacco samples. The correlations between the ultimate/proximate data and tobacco quality especially aroma style of tobacco were further discussed. Aroma classification model were proposed for the first time in tobacco industry to predicate the aroma style of the flue-cured tobacco based on elemental composition data derived from NIR spectroscopy. The application of this methodology can also be expanded from domestic tobacco to tobacco imported from Brazil, the United States, Canada, and Zimbabwe, with high accuracy. Compared with labor-consuming and nonreliable manual identification method currently used in tobacco industry, the NIR spectroscopy methodology reported herein shows its potential in quantifiable, digital, high-throughput characterization of tobacco.

Chemometrics

Curing of tobacco

10.2139/ssrn.4715853

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Improving availability of reconstituted tobacco with aroma components extracted from tobacco dust by supercritical extraction combined with molecular distillation separation

Zhongguo yancao xuebao (2019)

Jinxin Tie LI Yong-sheng Xianwei Hao Lili Zhang Yiming Bi

Tobacco product

Supercritical fluid extraction

10.16472/j.chinatobacco.2018.391

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Variable Selection for Referenceless Multivariate Calibration: A Case Study on Nicotine Determination in Flue-Cured Tobacco Powder by Near-Infrared (NIR) Spectroscopy

Analytical Letters (2021)

Yiming Bi Xianwei Hao Lu Dai Yuhan Peng Jinxin Tie

Variable (wavelength) selection is critical in the multivariate calibration of spectra that improves prediction performance and provides clearer interpretation. Most variable selection methods use Y information (chemical reference of interest) to evaluating the importance of variables. In this work, a novel variable selection is proposed that requires no reference information. Replicate spectra of a sample under various acquisition conditions were used with an index to evaluate the importance of variables. The results show that the proposed method achieves better results than the original partial least squares model with a few available calibration samples. When a large number of calibration samples are available, this method provided comparable results to the state-of-the-art variable selection methods while reduced the risk of model over-fitting.

Replicate

Chemometrics

10.1080/00032719.2021.1974028

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Style simulation and substitution of Brazilian tobacco based on near infrared spectrum and sensory evaluation

Tobacco Science & Technology (2017)

Xianwei Hao Jinxin Tie Wenmiao He Shitou Li Lili Zhang

Substitution (logic)

Sensory Substitution

10.16135/j.issn1002-0861.2017.0529

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Antitobacco Mosaic Virus Activity of a New Eremophilane Glucoside From the Leaves of Nicotiana tabacum L

Natural Product Communications (2022)

Hui Wang Lili Zhang Yongsheng Li Shitou Li Wenmiao He

A new eremophilane-type sesquiterpene glucoside, 13-hydroxycapsidiol 3- O- β-D-glucoside (1), was isolated from the leaves of Nicotiana tabacum L. The structure of this new metabolite was determined by one-dimensional (1D) and 2D nuclear magnetic resonance (NMR) spectroscopy, high-resolution electrospray ionization mass spectrometry (HR-ESI-MS), and comparison with values reported in the literature. Compound 1 was the second glycosylated eremophilane sesquiterpenoid isolated from plants of the Solanaceae family and exhibited a more potent anti-tobacco mosaic virus (anti-TMV) activity, with an inhibition rate of 39.4% at 20 μM, than the positive control ningnanmycin (34.8%).

Glucoside

Mosaic virus

10.1177/1934578x221120216

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Quality evaluation of flue-cured tobacco by near infrared spectroscopy and spectral similarity method

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy (2019)

Yiming Bi Shitou Li Lili Zhang Yongsheng Li Wenmiao He

Similarity (geometry)

10.1016/j.saa.2019.01.094

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Citations (22)

Correlation changes of microbial communities and metabolites in tobacco waste extract during its fermentation with additional Zygosaccharomyces sp. MC-5K3

Research Square (Research Square) (2022)

Ming Shu Yang Yang Fanda Pan Tengfei Bian Kailong Yuan

Abstract Tobacco ( Nicotiana tabacum L.) is a very important economic crop in China but lead to a large quantity of tobacco waste during processing. Nowadays, industrial tobacco waste was mainly treated via reconstituted tobacco process by papermaking method, during which liquid tobacco waste extract (TWE) is the key fermentation step to control the final product quality. As bioaugmentation with specific functional microorganisms was one effective method in the quality optimization of fermented products, some native strains were isolated from TWE and used as bioaugmentation agents. In this study, Zygosaccharomyces sp. MC-5K3 isolated from TWE was used as the additive to improve the quality of fermented TWE. The results proved that the addition of Zygosaccharomyces sp. MC-5K3 significantly influence the microbial diversity of fermented TWE especially for the fungal groups that Zygosaccharomyces become the only dominant fungal genus instead of some pathogenic bacterial genera. Then the metabolomics profiling of fermented TWE showed that the variation in the concentration of 3-Hydroxybenzoic acid was the key influence factor on fermented TWE quality after MC-5K3 was added. The correlation analysis showed that the change of microbial diversity of the fermented production due to the addition of MC-5K3 leaded to some important differential metabolites such as 3-Hydroxybenzoic acid and finally improved various qualities of tobacco products. In conclusion, this study lays a theoretical foundation and new microbiology methods for improving the quality of tobacco products by new microbiology methods.

Bioaugmentation

Microbial consortium

10.21203/rs.3.rs-2048015/v1

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Metformin prevents cerebellar granule neurons against glutamate-induced neurotoxicity

Brain Research Bulletin (2016)

Changwei Zhou Rong Sun Sujuan Zhuang Chong-Yi Sun Yongqing Jiang

Neurotoxicity

Excitotoxicity

10.1016/j.brainresbull.2016.02.009

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Citations (35)