Yeast Cell Encapsulation for Saliva-Triggered Flavor Release
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Solution Overview
Problem
Smoking articles lack a mechanism to deliver enhanced gustatory sensations without modifying the mainstream smoke characteristics during combustion.
Innovation Solution
Incorporating micro-organism cells, such as yeast cells, on the mouth end portion of smoking articles that encapsulate flavourants, which release upon contact with saliva, allowing for the delivery of flavourants without affecting the smoke characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If encapsulated flavourant is released through combustion of the smoking article, then the flavourant can be delivered to the consumer, but the flavour or characteristics of the mainstream smoke are modified
Solution Approach 1:
The flavourant delivery mechanism is extracted from the combustion process and placed separately on the mouth end portion of the smoking article. The encapsulated flavourant is positioned outside the tobacco rod and filter assembly, allowing it to be delivered independently through saliva contact rather than combustion, thus preventing modification of smoke characteristics while maintaining flavourant delivery
Solution Approach 2:
An intermediary mechanism (moisture-sensitive encapsulated flavourant) is introduced between the consumer's saliva and the flavourant delivery. The encapsulated flavourant acts as a mediator that only releases its contents upon contact with moisture from saliva, separating the flavourant delivery function from the combustion process and preventing smoke characteristic modification
2Quantity of substance
If encapsulated flavourant is provided on the mouth end portion to deliver enhanced gustatory sensations, then taste intensity is improved, but the device complexity increases
Solution Approach 1:
The smoking article is segmented into distinct functional zones: the tobacco rod for combustion, the filter for smoke filtration, and the mouth end portion with encapsulated flavourant for taste enhancement. This segmentation allows each component to perform its specific function independently, with the encapsulated flavourant providing enhanced gustatory sensations without complicating the overall device structure
Solution Approach 2:
The encapsulated flavourant is pre-positioned on the mouth end portion during manufacturing, ready for immediate release upon consumer use. This preliminary placement ensures that the flavourant is delivered at the optimal moment (when saliva contacts the mouth end portion) without requiring additional complex delivery mechanisms or user activation 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 solution enables the rapid release of flavourants into the consumer's mouth, providing intense and concentrated taste sensations while maintaining the original smoke characteristics during combustion.
Implementation Method 1
When the yeast cells come into contact with saliva, the carbohydrates absorb moisture from the saliva and swell, rendering the lipid bi-layer membrane permeable, which results in the release of the at least one flavourant encapsulated within the yeast cells
Data Source
AI summary
A filter cigarette comprises a tobacco rod and a filter attached to the tobacco rod by a band of tipping paper. The surface of the band of tipping paper is coated with a solution of cells having at least one flavorant encapsulated therein. In use, when the filter cigarette is placed in the mouth of a consumer, moisture from the consumer's saliva causes the cells provided on the surface of the tipping paper to release the encapsulated flavorant. The cells are preferably yeast cells. The solution of cells may be applied to the band of tipping paper by gravure printing.