Vacuum Packaging Preserves Mushroom Quality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for preserving mushrooms, particularly Agaricus bisporus, result in significant weight loss and loss of savory ingredients and nutritional value during blanching, leading to reduced taste and increased energy consumption, while current vacuum treatments do not enhance taste or nutritional value.
Innovation Solution
A method involving vacuum treatment of mushrooms in a plastic laminate bag at a pressure of less than 200 mbar, followed by sealing and heat treatment without liquid replacement, which excludes the blanching step and preserves juices and flavors, using minimal additional ingredients and optimizing heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mushrooms are blanched with hot water or steam, then washing and sterilization are achieved, but weight loss and loss of savory ingredients and nutritional value occur
Solution Approach 1:
The patent applies vacuum treatment to remove air from the packaging environment before heat treatment. This creates an inert atmosphere that prevents oxidation and reduces weight loss during processing, while still achieving effective sterilization through subsequent heat treatment at temperatures of 60°C or more.
Solution Approach 2:
The patent performs vacuum treatment as a preliminary action before heat treatment. By removing air from the packaging environment beforehand, the process prevents weight loss and preservation of savory ingredients during the subsequent heating phase, while still achieving effective sterilization.
2Loss of substance
If vacuum treatment is applied to replace air in mushrooms, then weight loss during blanching is reduced, but taste and nutritional value are not improved
Solution Approach 1:
The patent combines vacuum treatment with an inert atmosphere created by replacing air with a gas mixture containing carbon dioxide and nitrogen. This inert environment not only reduces weight loss but also preserves taste and nutritional value by preventing oxidation and degradation of mushroom components during storage and processing.
Solution Approach 2:
The patent uses a composite packaging atmosphere consisting of multiple gases (carbon dioxide and nitrogen) in specific proportions. This composite gas mixture provides synergistic effects: carbon dioxide inhibits microbial growth while nitrogen prevents oxidation, together preserving both weight and quality attributes.
3Ease of manufacture
If hot water or steam is used for washing and blanching, then effective cleaning is achieved, but energy consumption increases
Solution Approach 1:
The patent replaces the energy-intensive hot water or steam blanching process with vacuum treatment followed by heat treatment in an inert atmosphere. This approach achieves effective cleaning and sterilization while significantly reducing energy consumption by avoiding prolonged exposure to high-temperature water or steam.
Solution Approach 2:
The patent substitutes the thermal-mechanical blanching process (hot water or steam) with a vacuum-based mechanical process followed by controlled heat treatment. This substitution reduces energy consumption while maintaining or improving cleaning and sterilization effectiveness.
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 method preserves the taste and nutritional value of mushrooms, reduces energy consumption, and maintains the mushrooms' juices and aromas, resulting in a product of improved quality and extended shelf life with reduced weight loss.
Implementation Method 1
subjecting the bag and mushrooms to vacuum at a pressure of less than 200 mbar
Implementation Method 2
treating the sealed bag with mushrooms at a temperature 60 °C or more
Data Source
Figure 1~1E
AI summary
The invention relates to a method for preserving Agaricus bisporus mushrooms, other Agaricus spp. mushrooms, or other mushrooms that lose more than 15 wt% upon blanching, wherein optionally a relatively small amount (relative to the amount of fresh mushrooms) of additional ingredients is used, comprising the following consecutive steps: (a) Inserting clean fresh mushrooms in a plastic laminate bag; (b) Subjecting the bag with mushrooms to vacuum at a pressure of about 300 mbar or less; (c) Sealing the bag while keeping the vacuum; (d) Releasing the vacuum, and (e) Treating the bag with mushrooms at a temperature of about 60 °C or more. In this way a commonly used blanching step - applied before packaging - is excluded, by virtue of which energy is saved and the taste and nutritional value is improved. Thus, the mushrooms are of excellent quality with good taste and flavor and well preserved.