Peeled Potato Preservation via Cold Mist and Vacuum Packaging

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Solution Overview

Problem

Current methods for preserving peeled potatoes using sodium metabisulphite are counterproductive for patients with heart disease and diabetes, leading to longer recovery times and increased healthcare costs.

Innovation Solution

A method and processing line that maintain potatoes at a temperature just above freezing, peel and inspect them, and vacuum-pack them in high oxygen barrier bags with minimal suction pressure, using a cold mist to prevent discoloration and eliminate the need for preservatives, while cutting and packaging according to user requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If sodium metabisulphite treatment is used to preserve peeled potatoes, then shelf life is extended to 7 days, but health risks increase for patients with heart disease and diabetes

Engineering Contradiction:

Improveshelf lifeVSAvoidhealth risks

Core Design Contradiction:

Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The invention removes sodium metabisulphite from the preservation process entirely, extracting the harmful chemical substance while maintaining the shelf life extension benefit through alternative means (cold storage and vacuum packaging)

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention uses vacuum packaging to create an inert environment by removing oxygen from the packaging space, preventing oxidation and microbial growth without requiring chemical preservatives

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

2Ease of operation

If potatoes are stored at higher temperatures for easier handling, then operational ease increases, but discoloration and spoilage accelerate

Engineering Contradiction:

Improvehandling easeVSAvoidcolor stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The invention changes the storage temperature parameter to just above freezing (approximately 1-4°C), which slows metabolic processes and enzymatic browning while still allowing for practical handling and processing

Inventive Principle:

Principle #35Parameter changes

3Productivity

If strong vacuum pressure is applied during packaging, then packaging efficiency increases, but potato structure may be damaged

Engineering Contradiction:

Improvepackaging efficiencyVSAvoidpotato structure

Core Design Contradiction:

ProductivityVSStrength

Solution Approach 1:

The invention applies vacuum pressure partially (to a moderate level sufficient for packaging) rather than using extreme vacuum, achieving adequate packaging efficiency while avoiding structural damage to the potatoes

Inventive Principle:

Principle #16Partial or excessive action

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

This approach extends the shelf life of peeled potatoes to 7 days without using chemicals, making them a healthier option and potentially reducing healthcare costs by minimizing hospital stays and treatment returns.

Implementation Method 1

maintaining the potatoes in a temperature range that is just above freezing

Methodology Applied

Scientific EffectCooling: Cooling

Implementation Method 2

vacuum-packing the inspected potatoes into bags

Methodology Applied

Scientific EffectVacuum: Vacuum

Data Source

PatentUS9055758B2Chemical and preservative free peeled potatoes

Publication Date: 2015.06.16 COHN FARMS INC

AI summary

Various embodiments are described herein of a method and apparatus that can be used to extend the shelf-life of potatoes without adding preservatives or chemicals.