Microencapsulated Additives in Smokeless Tobacco

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Solution Overview

Problem

Existing smokeless tobacco products face challenges in maintaining storage stability and sensory characteristics due to chemical interactions among ingredients, leading to reduced shelf-life and undesirable sensory experiences.

Innovation Solution

The development of a smokeless tobacco product with a tobacco formulation that includes microencapsulated additives, such as flavorants, sweeteners, and preservatives, which are physically separated from other components to prevent interactions, using encapsulated forms like microcapsules that release their contents upon physical destruction or moisture exposure, enhancing storage stability and sensory experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additives are mixed directly with tobacco formulation, then manufacturing process is simple, but chemical interactions occur leading to reduced storage stability and shelf-life

Engineering Contradiction:

Improvestorage stabilityVSAvoidformulation structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the tobacco formulation into distinct components: encapsulated additives and unencapsulated tobacco material. This physical separation prevents direct contact and chemical interactions between ingredients, thereby improving storage stability while maintaining manufacturing simplicity through straightforward mixing processes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses encapsulation technology as an intermediary mechanism, where the encapsulating material acts as a barrier between additives and tobacco formulation. This intermediary layer prevents harmful chemical interactions during storage while allowing controlled release during use, resolving the contradiction between storage stability and formulation complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Duration of action of stationary object

If microencapsulated additives are used, then sensory characteristics are maintained and shelf-life extended, but manufacturing complexity increases

Engineering Contradiction:

Improveshelf-lifeVSAvoidmanufacturing process

Core Design Contradiction:

Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

The patent applies preliminary action by pre-encapsulating additives before incorporation into the tobacco formulation. This advance preparation ensures that additives are protected and stable during storage and manufacturing, extending shelf-life while simplifying the final mixing process since no additional encapsulation steps are needed at the formulation stage.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If higher moisture content is used in tobacco formulation, then sensory experience is enhanced, but storage and transportation costs increase

Engineering Contradiction:

Improvesensory experienceVSAvoidmoisture content

Core Design Contradiction:

Ease of operationVSQuantity of substance

Solution Approach 1:

The patent applies parameter changes by controlling the moisture content of the tobacco formulation to an optimized level that balances sensory experience with storage efficiency. By adjusting this critical parameter, the formulation maintains acceptable sensory characteristics while reducing the quantity of moisture that would otherwise increase storage and transportation costs.

Inventive Principle:

Principle #35Parameter changes

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 microencapsulation of additives improves storage stability, maintains sensory characteristics, and provides a controlled release of flavors, extending the product's shelf-life and user experience while reducing moisture content for cost-effective storage and transportation.

Implementation Method 1

the additive is in an encapsulated form comprising an outer wall or barrier structure and an inner region or payload containing the additive

Methodology Applied

Scientific EffectPhysical separation through encapsulation: Physical Containment

Implementation Method 2

which releases the additive when the outer shell undergoes some type of physical destruction, breakage, or other loss of physical integrity

Methodology Applied

Scientific EffectControlled release through barrier breakdown: Physical Containment

Data Source

PatentUS10219537B2Smokeless tobacco composition

Publication Date: 2019.03.05 R J REYNOLDS TOBACCO COMPANY

AI summary

The invention provides a process for preparing a tobacco composition suitable for use as a smokeless tobacco composition, the process including: providing a slurry comprising water and a tobacco material, the slurry comprising at least about 75% by weight water, based on the total weight of the slurry; heating the slurry to a temperature of at least about 60.degree. C. for a time sufficient to pasteurize the tobacco material; adding an amount of a base to the slurry sufficient to raise the pH of the slurry to at least about 8.5, thereby forming a pH-adjusted slurry; and continuing to heat the pH-adjusted slurry to a temperature of at least about 60.degree. C. for a time sufficient for the pH of the slurry to drop at least about 0.5 pH unit following the adding step.