Smokeless Tobacco Composition Using Lactic Acid

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Solution Overview

Problem

Smokeless tobacco or non-tobacco snuff products with high water content face challenges in preventing microbial growth without using high amounts of sodium chloride, which can result in an overly salty taste and increased risk of microbial growth due to elevated water activity.

Innovation Solution

Incorporating at least 1 wt% lactic acid or its salt into the composition to reduce the need for sodium chloride, maintaining antimicrobial effects while lowering the salty taste and water activity, thereby preventing microbial growth and allowing for a more cohesive texture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If high amounts of sodium chloride are used to prevent microbial growth in high water content smokeless tobacco products, then microbial growth is inhibited, but the product develops an overly salty taste and water activity increases

Engineering Contradiction:

Improvemicrobial growth preventionVSAvoidsalty taste

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical parameter by substituting sodium chloride with lactic acid, altering the preservative mechanism from salt-based osmotic pressure to acid-based pH control and antimicrobial action. This allows effective microbial inhibition without the harmful salty taste associated with high sodium chloride concentrations.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts the typically harmful effect of high water activity (which promotes microbial growth) into a benefit by using lactic acid to control microbial growth even at higher water activity levels. The lactic acid tolerates and even benefits from the higher water content environment, maintaining product safety without requiring water reduction.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If high amounts of sodium chloride are used to prevent microbial growth, then microbial growth is inhibited, but water activity increases which can promote microbial growth

Engineering Contradiction:

Improvemicrobial growth preventionVSAvoidwater activity

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the preservative mechanism from relying on low water activity (achieved through sodium chloride) to relying on pH control and direct antimicrobial action of lactic acid. This allows the product to maintain higher water activity levels while still preventing microbial growth through the acid's inhibitory effects on bacterial metabolism and cell function.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If water content is reduced to prevent microbial growth, then microbial growth is inhibited, but the product loses moisture and becomes less palatable

Engineering Contradiction:

Improvemicrobial growth preventionVSAvoidproduct palatability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent changes the approach from physical water reduction to chemical microbial inhibition using lactic acid. This allows the product to maintain high water content for palatability and texture while the lactic acid provides the necessary microbial protection, effectively decoupling moisture content from microbial safety.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If lactic acid is added to the composition, then microbial growth is prevented and salty taste is reduced, but the manufacturing process becomes more complex

Engineering Contradiction:

Improvemicrobial growth preventionVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs lactic acid which can be produced through natural fermentation of the tobacco material itself or added as a simple ingredient. The fermentation process or direct addition requires minimal additional equipment or process steps, allowing the system to essentially self-regulate microbial growth through the acid's inherent preservative properties without complex manufacturing interventions.

Inventive Principle:

Principle #25Self-service

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 use of lactic acid or its salt effectively prevents microbial growth even at higher water activity levels, reducing the salty taste and allowing for a more cohesive product that can be packed at lower water content, thus enhancing consumer preference and manufacturing efficiency.

Implementation Method 1

maintaining antimicrobial effects while lowering the salty taste and water activity, thereby preventing microbial growth

Methodology Applied

Scientific EffectWater activity reduction:

Implementation Method 2

Incorporating at least 1 wt% lactic acid or its salt into the composition to reduce the need for sodium chloride, maintaining antimicrobial effects while lowering the salty taste

Methodology Applied

Scientific EffectAntimicrobial effect: Preservative

Data Source

PatentEP3019039B1Smokeless tobacco composition and method for its manufacture

Publication Date: 2017.08.02 SWEDISH MATCH NORTH EURO

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AI summary

A smokeless tobacco or non-tobacco snuff composition for oral use comprising at least 20 wt% water based on the total weight of the final composition and at least 1 wt% lactic acid or a salt thereof based on the dry weight of the final smokeless tobacco or non-tobacco snuff composition, as well as a method for its manufacture and the use of such composition.