Utilizing the cryogenic temperature (-196°C) of liquefied nitrogen
Cryogenic and Freezer Grinding is applicable even to Food Materials with high moisture and oil content.
Pulverization of food materials while maintaining their unique taste, aroma and heat-sensitive components
Contract cryogenic and freezer grinding
of food materials
Food materials can be ground to an average diameter of over 10 to several 100 μm.
Using liquefied nitrogen produced by our group
enables efficient grinding.
Do you have any problems with
grinding food materials?
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1
It is difficult to pulverize food materials with high moisture content to a fine powder.
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Example) Lemon
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Raw materials with high moisture content, such as fruits, cannot be pulverized at room temperature because they are crushed.
Even food materials with high moisture content can be pulverized because they are ground in a frozen state.
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Frozen state
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After 1 hour left standing at room temperature
* Since there is no drying process unlike freeze-drying, the material becomes paste when left standing at room temperature.
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2
It is difficult to pulverize food materials with high oil content.
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Example) Almond
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It is difficult to pulverize raw materials with high oil content, such as almonds, at room temperature because they become paste.
Even food materials with high oil content can be ground to fine powder because they are ground in a frozen state.
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Frozen state
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After 1 hour left standing at room temperature
The material can be maintained in powder form at room temperature whether the oil is liquid or solid at room temperature.
* Grain size needs to be discussed separately. -
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3
Pulverizing materials destroys their taste, aroma and heat-sensitive components.
Pulverizing materials at room temperature causes the materials to lose their original taste and aroma, and it also destroys their components.
Since the materials are ground at cryogenic temperatures using liquefied nitrogen their taste, aroma and heat-sensitive components can be maintained.
Grinding the material at low temperatures allows for pulverization without affecting their taste, aroma or components.
Example of food materials
Here are some of the food materials that we have ground.
All are ground under the same conditions (machine conditions for finest quality); however, the particle size varies
depending on the material.
Fruit
Almond
Hydrogenated fat
Chocolate
Cacao nibs
Coffee beans
Sesame seeds
Small dried sardines
“-196˚C Strong Zero”
Photo provided by Suntory Spirits Ltd.
Ground at our Food Factory, which has obtained the international standard (FSSC22000).
We pulverized whole lemons, limes and other fruits supplied by Suntory Spirits Ltd., from seed to peel, by subjecting them to cryogenic and freezer grinding.
Although food materials are generally crushed at room temperature, when crushed by a machine, the materials are subjected to extremely high crushing heat, which often results in the alteration of proteins and other effects.
Since heat is not applied on the materials at cryogenic temperatures, their flavor and aroma can be preserved. This is why our method was chosen for this product.
Flow of grinding a food material
- The material is put into the freezer.
- The material is pre-cooled with liquefied nitrogen.
* This may not be necessary depending on the material. - A fixed amount of the material is fed into the LINREX MILL with the screw feeder.
- The material is ground in the LINREX MILL.
- Particles are conveyed with the blower and collected with the cyclone.
- The collected powder is filled as a product.
Contract grinding at Osaka Gas Liquid
Since we have grinders with different processing capacities, from trial machines to large machines,
we can efficiently deal with a wide range of production quantities, from a few kilograms to 100 tons,
including spot production.
Furthermore, our unique technology and experience enable us to meet all kinds of needs
related to cryogenic and freezer grinding.
General flow
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First meeting
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We will explain about contract cryogenic and freezer grinding and listen to the customer’s requirements.*
* We would like you to produce powder that is the same as the current product.
We would like you to produce powder of less than xx μm.
We would like you to produce powder that has a pleasant taste. etc.
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Trial grinding
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Trial grinding is performed to confirm that the target granularity has been reached and to have the customer make a decision on whether or not to accept the contract.
<<Trial grinding overview>>
◎ Trial samples: up to 6 conditions/day
◎ Quantity of raw materials: Up to 30 kg/day in total
◎ Cost: 100,000 yen/day *If raw material size exceeds 5 mm square, please consult us separately.
◎ Factory acceptance criteria: Coliform group negative/0.1 g and general viable bacteria count 100,000/g or less
(We can also conduct a bacteria test at the time of trial grinding.)
◎ Particle size attained: Average diameter (50% pass-through diameter) over 10 to several 100 μm
* Depends on the raw material.
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[Customer] Evaluation of prototypes
[Osaka Gas Liquid] Preparation of unit price quotations, etc.
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The customer will consider use of the prototypes for new products or existing products and make proposals to its partner companies, thereby evaluating the prototypes.
We will submit a quotation for mass production in accordance with the customer’s desired quantity.
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Meeting for mass production
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We will hold a meeting to conclude a contract, product specifications and other necessary documents to start the transaction.
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To mass production
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Start of contract grinding
Cryogenic and freezer grinding brochure
Click here to downloadFrequently asked questions
Why food materials are ground at cryogenic temperatures?
What are the characteristics of cryogenic and freezer grinding?
Also, nitrogen is used to prevent oxidation during the grinding process.
Can food materials with high moisture/oil content be ground?
However, the state after grinding depends on the material.
[Food materials that contain much moisture content]:
The powdery state is maintained when they are frozen; however, after a few minutes of standing at room temperature, they gradually melt and eventually become liquid.
* We can also perform the entire process until drying using technologies of our partner company.
[Food materials that contain much oil content]: (Solid oil at room temperature → hydrogenated fat, chocolate, etc.)
Since even after the grinding, the temperature does not rise above room temperature, the powdery state can be maintained regardless of the ground particle size.
[Food materials that contain much oil content]: (Liquid oil at room temperature → sesame seed, almond, etc.)
When they are left to stand at room temperature, oil may seep out from the inside and they may turn into paste, just as with food materials that contain much moisture content. However, if they are not ground too finely, they can be kept in powder form at room temperature.
The particle size can be adjusted during the trial grinding, so please feel free to consult us.
Access
Cryogenic Grinding Center Food Factory
3-7 Takasago, Takaishi-shi, Osaka 592-0001
Tel:072-269-2981 Fax: 072-269-2982
15 minutes by taxi from Hagoromo Station on Nankai Main Line
(Tell the taxi driver "Osaka Gas Liquid Food Factory” and the address, “3-7 Takasago, Takaishi-shi.”)
