Tobacterial Profile Modification via Pre-Harvest Probiotic Treatment
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Solution Overview
Problem
Current methods for altering the character and nature of tobacco plants and tobacco compositions used in smoking and smokeless products are limited in effectively modifying bacterial content, particularly in reducing total bacterial content and increasing Lactobacillus bacteria, which affects the chemistry and sensory properties of tobacco products.
Innovation Solution
A method involving treatment of unharvested tobacco with solutions containing salt, sugar, enzymes, or probiotics up to 24 hours before harvest, which reduces total bacterial content and increases Lactobacillus bacteria, followed by curing and potential fermentation to produce tobacco products with reduced tobacco-specific nitrosamines (TSNAs) and enhanced fermentation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to alter tobacco character and nature, then the process is simple and straightforward, but the ability to effectively modify bacterial content is limited
Solution Approach 1:
The patent applies preliminary action by treating the tobacco plant with probiotic bacteria and/or salt solutions before harvest, specifically targeting the modification of bacterial content during the growth stage. This pre-treatment approach allows for effective modification of bacterial content (reducing total bacteria by up to 80% and increasing Lactobacillus) while establishing a controlled process that can be integrated into existing tobacco cultivation workflows.
2Reliability
If treatment solutions are applied to unharvested tobacco, then bacterial content can be effectively modified, but the process requires timing and coordination before harvest
Solution Approach 1:
The treatment is applied in the field to unharvested tobacco plants at a specific time window (less than 24 hours before harvest). This timing ensures that the probiotic bacteria and salt solution have sufficient time to modify the bacterial content effectively, achieving up to 80% reduction in total bacteria and increase in Lactobacillus, while the treatment can be easily integrated into the harvest schedule without requiring extended time commitments.
3Object-affected harmful factors
If total bacterial content is reduced by up to 80%, then tobacco-specific nitrosamines (TSNAs) are reduced, but the process requires precise control of treatment conditions
Solution Approach 1:
The patent employs parameter changes by utilizing salt solutions (varying concentrations of NaCl, KCl, CaCl2, MgCl2) and probiotic bacteria (Lactobacillus species) as treatment parameters. By adjusting these parameters, the process achieves precise control over bacterial content modification, reducing total bacteria by up to 80% and consequently reducing TSNA content in the tobacco product.
Solution Approach 2:
Salt solutions serve as an intermediary mechanism that enhances the efficacy of probiotic bacteria in modifying the tobacco bacterial profile. The salt treatment creates favorable conditions for Lactobacillus growth while suppressing other bacteria, thereby mediating the overall reduction in TSNA content through controlled bacterial community shifts.
4Productivity
If Lactobacillus bacteria are increased, then fermentation characteristics are improved, but the treatment process becomes more complex
Solution Approach 1:
The probiotic bacteria (Lactobacillus species) applied to the tobacco plant serve a dual function: they immediately begin modifying the bacterial profile during growth, and they subsequently enhance fermentation efficiency during the fermentation process. This self-service approach allows the same treatment to benefit both the growth stage (bacterial content modification) and the fermentation stage (improved fermentation characteristics), reducing the need for separate intervention steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method significantly reduces total bacterial content by up to 80% and increases Lactobacillus bacteria, resulting in tobacco products with lower TSNA content and improved fermentation characteristics, enhancing the quality and safety of tobacco products.
Implementation Method 1
contacting an unharvested tobacco material up to about 24 hours before harvest with a treatment solution... provides a treated tobacco material having a reduced total bacterial content... and/or an increase in Lactobacillus bacterial content
Implementation Method 2
a solution comprising salt, sugar, or a combination thereof
Implementation Method 3
a solution comprising one or more enzymes
Implementation Method 4
a solution comprising one or more probiotics... increase in Lactobacillus bacterial content
Implementation Method 5
followed by curing and potential fermentation to produce tobacco products
Implementation Method 6
enhanced fermentation processes... resulting in tobacco products with lower TSNA content
Data Source
AI summary
A method of modifying the content of certain bacteria in uncured tobacco material is provided, the method including contacting an uncured tobacco material with a treatment solution, wherein the treatment solution is selected from the group consisting of: (i) a solution comprising salt, sugar, or a combination thereof; (ii) a solution comprising one or more enzymes; and (iii) a solution comprising one or more probiotics, wherein said contacting provides a treated tobacco material having a reduced total bacterial content following harvest. In certain embodiments, the treated tobacco material is subsequently cured, and can optionally be fermented. Smoking articles and smokeless tobacco products including such treated tobacco materials are also provided.