Complex technological profiling of market dominating Oriental tobaccos from Krumovgrad region (Bulgaria)

Nikolova, V.; Nikolov, N.; Popova, V. T.; Peeva, S. T.; Drachev, D.

doi:10.1088/1757-899x/1031/1/012095

Cited by 6 publications

(8 citation statements)

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“…The evaluation of the quality level of the Oriental tobaccos in the study followed a procedure previously validated for tobacco quality monitoring in Bulgaria [18]. In brief, it incorporated four basic steps of assessment including the consecutive determination of chemical indices, expert rating by sensory assessment of the external leaf properties (leaf size, color, texture, odor, body, integrity, etc.…”

Section: Evaluation Proceduresmentioning

confidence: 99%

“…In brief, it incorporated four basic steps of assessment including the consecutive determination of chemical indices, expert rating by sensory assessment of the external leaf properties (leaf size, color, texture, odor, body, integrity, etc. ), rating by smoking properties, and the final rating by calculating the complex quality index [18].…”

Section: Evaluation Proceduresmentioning

confidence: 99%

“…The final valuation of the quality level of the tobaccos regarded in the study was achieved by assigning individual ranks, resulting from their performance in the chemical analysis, the expert and the smoking rating steps, as described previously [18]. The calculation of the complex quality indices was done by multiplying the respective rank with its coefficient of importance (relative weight), defined by the expert panel.…”

Section: Complex Rating Of Tobaccosmentioning

confidence: 99%

“…As stated earlier, the final complex quality rating of the tobaccos within the respective ecotypes was based on the results achieved in each of the above-described steps of the evaluation procedure, namely those in regard with selected chemical indicators of tobacco and tobacco smoke (nicotine and reducing sugars, as well as the ratio between them, and the tar content in the smoke), the expert rating by leaf quality properties and the smoking tests [18]. The approach for the interpretation of data for the chemical composition of the tobaccos in the study (Table 2) was as follows: nicotine content was rated unidirectionally according to its nominal value, i.e., the highest concentration achieved the highest rank (rank 1).…”

Section: Complex Quality Ratingmentioning

confidence: 99%

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Valuation of the Quality Level of Bulgarian Tobacco from the Market Sector of “Basmi” Variety Group

Nikolova,

Nikolov,

Popova

et al. 2024

BIO Web Conf.

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The aim of the current study was to assess the quality level of Oriental tobaccos from the market sector of the “Basmi” variety group from different production areas in Bulgaria. Tobaccos from Krumovgrad and Greek Basma ecotypes (varieties “Krumovgrad 90”, “Krumovgrad 58”, “Krumovgrad 78”, and “Basma”, respectively) were investigated, all farmer-produced (2019 crop year) in seven tobacco regions. The investigation followed a procedure validated for monitoring the quality of Bulgarian tobaccos, incorporating four evaluation steps – chemical indices of tobacco and tobacco smoke, expert and smoking assessment, and final rating by a complex quality index. Statistically significant differences were observed between the compared tobaccos (variety and region based) within the two ecotypes. For Krumovgrad ecotype, the final rating of the compared tobaccos revealed the best complex quality indicators in varieties “Krumovgrad 78” from Kardzhali (micro-region Patitza), “Krumovgrad 58” from Haskovo-Harmanli (Stambolovo) and “Krumovgrad 58” from Ivaylovgrad (Belopoltzi). With the best quality level within ecotype Basma were the tobaccos produced in Svilengrad (micro-region Raykova mogila) and Momchilgrad (Chorbadzhiysko) regions. The results from the study substantiate the annual monitoring of the quality level of Bulgarian Oriental tobaccos and provide data, which have potential importance for the national tobacco sector.

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Section: Evaluation Proceduresmentioning

confidence: 99%

Section: Evaluation Proceduresmentioning

confidence: 99%

Section: Complex Rating Of Tobaccosmentioning

confidence: 99%

Section: Complex Quality Ratingmentioning

confidence: 99%

See 2 more Smart Citations

Valuation of the Quality Level of Bulgarian Tobacco from the Market Sector of “Basmi” Variety Group

Nikolova,

Nikolov,

Popova

et al. 2024

BIO Web Conf.

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“…Tobacco leaves, as the guaranteed basic raw material of cigarette brands, are crucial to the economic benefits of the tobacco industry [1]. The results of tobacco grading have a great impact on the accuracy of formula development and product quality satisfaction.…”

Section: Introductionmentioning

confidence: 99%

A WOA-Stacking Tobacco Leaf Grading Method Based on Multi-Heterogeneous Classifiers Ensemble

Hou

Zhang

Liu³

et al. 2023

Preprint

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Tobacco leaf grading is an essential step for the rational use of tobacco resources and enhancing tobacco benefits. However, the existing tobacco leaf grading technology suffers from the problem of limited grade discrimination and low identification accuracy of single classifiers. To address these issues, we proposed a tobacco leaf grading method based on Whale Optimization Algorithm and multi-heterogeneous classifier Stacking ensemble (WOA-Stacking). In this paper, we utilized the differences in data observation and training principles of heterogeneous classifiers and integrate them using the Whale Optimization Algorithm (WOA) to build a stacked ensemble model. The fitness function is calculated based on the classification performance matrix and the discriminant function. The optimal combination of base classifier and meta classifier is selected from the classifier pool composed of 9 heterogeneous classifiers, and a data-driven classification model is constructed. Subsequently, hyperparameter tuning and hierarchical coupling are performed by Grid Search (GS) and K-fold Cross-Validation (K-CV). Finally, the model is evaluated and validated by applying the tobacco leaf grade dataset. The experimental results demonstrate that the WOA-Stacking model outperforms traditional single classification models, and achieves high accuracy in tobacco leaf grade classification. The model constructed in this paper can be applied as a data-driven general model for tobacco leaf grade classification in different regions, providing technical support towards industrialization of tobacco leaf grading.

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A WOA-Stacking Grading Mode Based on Multi-heterogeneous Classifiers Ensemble

Hou,

Zhang,

Long

et al. 2024

Mechanisms and Machine Science

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Complex technological profiling of market dominating Oriental tobaccos from Krumovgrad region (Bulgaria)

Cited by 6 publications

References 0 publications

Valuation of the Quality Level of Bulgarian Tobacco from the Market Sector of “Basmi” Variety Group

Valuation of the Quality Level of Bulgarian Tobacco from the Market Sector of “Basmi” Variety Group

A WOA-Stacking Tobacco Leaf Grading Method Based on Multi-Heterogeneous Classifiers Ensemble

A WOA-Stacking Grading Mode Based on Multi-heterogeneous Classifiers Ensemble

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