Effect of two drying methods on chemical transformations in flue-cured tobacco

Zong, Jijian; He, Xian; Lin, Zhonglong; Hu, Mengyang; Xu, Anchuan; Chen, Yi; Zhao, Gaokun; Hu, Binbin; Jin, Yan; Zou, Congming

doi:10.1080/07373937.2020.1779287

Cited by 23 publications

(14 citation statements)

References 21 publications

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Section: Resultsmentioning

confidence: 99%

“…This was also consistent with previous studies that reported high chlorine content worsens the sensory quality of cigarettes, possibly because chlorine inhibits the release of aromatic components such as Maillard products. 26,27 The linear correlation of both total alkaloid and potassium contents with the TG curve was weak within the whole temperature range, where the absolute values were lower than 0.5, as shown in Figure 2d,f. In this case, the relationship between the contents of these two compounds and TG curve was relatively complex.…”

Section: Analysis Of Tg Curves Figure S1 In the Supportingmentioning

confidence: 91%

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Quantitative Analysis of Routine Chemical Constituents of Tobacco Based on Thermogravimetric Analysis

et al. 2022

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As the most basic indexes to evaluate the quality of tobacco, the contents of routine chemical constituents in tobacco are mainly detected by continuous-flow analysis at present. However, this method suffers from complex operation, time consumption, and environmental pollution. Thus, it is necessary to establish a rapid accurate detection method. Herein, different from the ongoing research studies that mainly chose near-infrared spectroscopy as the information source for quantitative analysis of chemical components in tobacco, we proposed for the first time to use the thermogravimetric (TG) curve to characterize the chemical composition of tobacco. The quantitative analysis models of six routine chemical constituents in tobacco, including total sugar, reducing sugar, total nitrogen, total alkaloids, chlorine, and potassium, were established by the combination of TG curve and partial least squares algorithm. The accuracy of the model was confirmed by the value of root mean square error for prediction. The models can be used for the rapid accurate analysis of compound contents. Moreover, we performed an in-depth analysis of the chemical mechanism revealed by the result of the quantitative model, namely, the regression coefficient, which reflected the correlation degree between the six chemicals and different stages of the tobacco thermal decomposition process.

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Section: Resultsmentioning

confidence: 99%

Section: Analysis Of Tg Curves Figure S1 In the Supportingmentioning

confidence: 91%

Quantitative Analysis of Routine Chemical Constituents of Tobacco Based on Thermogravimetric Analysis

et al. 2022

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“…The sugars in flue-cured tobacco leaves in Bijie are frequently in high levels 27 . It was reported that measures to decrease the sugar contents in flue-cured tobacco leaves by using biochar, chemical fertilizers, and baking were limited 43 , 44 . However, it is possible to decrease tobacco sugar contents by improving soil fungal communities, while plant sugar was negatively correlated with Mortierella alpina , Mortierella hyalina , Tausonia pullulans , and Humicola olivacea species in soil (r ≤ − 0.445, p < 0.05, Fig.…”

Section: Discussionmentioning

confidence: 99%

Soil fungal communities affect the chemical quality of flue-cured tobacco leaves in Bijie, Southwest China

Wang

Zhang

et al. 2022

Sci Rep

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Soil microorganisms could affect the quality of tobacco leaves, however, little is known about the association of tobacco chemical components and soil fungal communities. In the present study, the relationship between soil fungi and tobacco quality based on chemical components in Bijie was investigated. The results showed that the total harmony scores (THS) of the analyzed tobacco leaves ranged from 46.55 ± 3.5 to 91.55 ± 2.25. Analyses of chemical components revealed that high contents of nicotine (≥ 1.06%) and sugar (total sugar: ≥ 22.96%, reducing sugar: ≥ 19.62%), as well as low potassium level (≤ 2.68%) were the main factors limiting the quality of flue-cured tobacco leaves. Pearson correlation analysis indicated that soil nitrate, available potassium/phosphorous, and organic matter significantly correlated with tobacco nicotine, potassium, and chloride levels (p < 0.05). Besides, the analysis of alpha- and beta-diversity of soil fungal communities implied that fungal structure rather than the richness affected the chemical quality of tobacco. In detail, the relative abundance of Humicola olivacea species in soils was positively correlated with the THS of tobaccos (r = 0.52, p < 0.05). Moreover, the species including Mortierella alpina, Mortierella hyalina, Tausonia pullulan, and Humicola olivacea were negatively correlated with tobacco sugar (r ≤ − 0.45, p < 0.05) while, Codinaea acaciae and Saitozyma podzolica species were negatively correlated with tobacco nicotine (r ≤ − 0.51, p < 0.05). The present study provides a preliminary basis for utilizing fungal species in soils to improve the chemical quality of tobacco in the studied area.

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“…It revealed that dry-and wet-bulb temperatures could lower the abundance of bacterial communities. The flue-curing promoted the material transformation and metabolism of tobacco leaves, in which macromolecules were transformed into small molecule compounds 34,35 . In terms of function prediction of bacteria in tobaccos, the function distributions of either the surface or endophytic bacteria of tobacco leaves were all similar either under conventional or temperature-and humidity-con- www.nature.com/scientificreports/ trolled flue-curing.…”

Section: Correlation With Environmental Factors and Function Predictimentioning

confidence: 99%

The effect of flue-curing procedure on the dynamic change of microbial diversity of tobaccos

Gong

et al. 2021

Sci Rep

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The purpose of the study is to explore the effect of flue-curing procedure on the diversity of microbial communities in tobaccos and the dynamic change of compositions of microbial communities in the flue-curing process. It expects to provide a theoretical basis for the application of microbes in tobacco leaves and a theoretical basis and idea for optimization of the flue-curing technologies. By investigating tobacco variety K326, the tests were carried out for comparing the conventional flue-curing procedure and dry-ball temperature set and wet-ball temperature degradation flue-curing procedure. Based on the culture-independent approach and high-throughput sequencing procedure, the relationship between the flue-curing procedure for tobaccos and microbial communities in tobaccos was revealed by measuring the dynamic change of microbial communities. The results indicated that:(1) Relative to surface wiping method, washing method was more suitable for the sampling of microbes on the surface of tobacco leaves; (2) Dry-ball temperature set and wet-ball temperature degradation flue-curing procedure was more favorable for maintaining the microbial diversity of tobaccos; (3) Relative to bacteria of the tobaccos, the succession rule of the fungal communities in tobaccos was relatively steady; (4)Compared with bacterial community diversity, the fungal community diversity presented an obvious negative correlation with temperature and humidity during the flue-curing process. (5) The function of bacterial communities in tobaccos matched with the material transformation law of tobaccos, having a direct correlation on the flue-curing process. In short, Dry-ball temperature set and wet-ball temperature degradation flue-curing procedure can more favorably maintain the microbial diversity of tobaccos; moreover, the function of the tobacco system involved in microbes in tobaccos was closely related to the material transformation law of tobaccos in the flue-curing process. It validated that the bacteria in tobaccos play an important role in the flue-curing process of tobaccos.

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Effect of two drying methods on chemical transformations in flue-cured tobacco

Cited by 23 publications

References 21 publications

Quantitative Analysis of Routine Chemical Constituents of Tobacco Based on Thermogravimetric Analysis

Quantitative Analysis of Routine Chemical Constituents of Tobacco Based on Thermogravimetric Analysis

Soil fungal communities affect the chemical quality of flue-cured tobacco leaves in Bijie, Southwest China

The effect of flue-curing procedure on the dynamic change of microbial diversity of tobaccos

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