You Can’t Think Of Such a Whole Household Freeze-Drying Method.

1 Pick The Type Of Food You Want To Freeze-Dry. Foods Rich In Water Are Best For Lyophilization. Their Ingredients Will Remain Intact After Processing, And These Foods Will Remain Particularly Good: Fruits Such As Apples, Bananas, Berries, Persimmons And Pears. Vegetables Such As Potatoes, Peppers, Carrots, Sweet Potatoes And Parsnips.

Once You Are Familiar With The Processing, Try To Freeze The Dried Chicken Breast, Cheese And Even Whole Pieces Of Meat, Like Pasta And Meatballs. Any Food Rich In Moisture Can Be Preserved By Freeze Drying.

2 Pick The Freshest Food Possible. Freeze Drying When The Food Is Most Mature Or Fresh Ensures That The Food Tastes Good When Eaten. When The Fruit And Vegetables Are In Season Or Fully Mature, They Should Be Stored In a Freeze-Dried Manner. When The Meat Is Cooked And Cooled, It Should Be Stored In a Freeze-Dried Manner Immediately.

Once The Food Is Cooked And Cooled, It Should Be Lyophilized Immediately. Don't Freeze The Meals That Have Been Stored In The Refrigerator For a Few Days, Otherwise You Will Eat Like Leftovers When You Cook Again.

3 Do Not Freeze And Dry The Food That Is Not Cooked Well. Berry And Apples Don't Have To Be Made Anymore—In Fact, These Fruits Taste Good After Lyophilization. On The Other Hand, Lyophilized Meat Or Pasta Is Added To The Water For Consumption. So Don't Freeze And Dry Food That Is Not Feasible. Bread Is Not Suitable For Lyophilization Because Its Mouthfeel Depends On Freshness. Cakes, Cookies And Other Fermented Foods Are Not Suitable For Lyophilization.

4 Processing Of Food Freeze-Drying. Prepare The Food To Be Stored As Follows: If Possible, Wash The Food Thoroughly And Air Dry. Cut The Food Into Small Pieces. Cut Apples, Potatoes And Other Fruits And Vegetables Into Pieces To Remove Moisture.

Method 2 Uses a Freezer To Freeze Dry Food

1 Place The Food In a Plate Or On a Tray. Disperse Them So That They Are Not Arranged So Densely.

2 Place The Tray In The Freezer. If Possible, Make Sure There Is No Other Food In The Freezer. Do Not Open The Freezer Too Much When Freezing Food. This Slows Down The Freezing Process And Causes The Food To Produce Ice Crystals. If You Have a Deep Freezer, Use It For Freezing. Food Should Be Frozen At The Lowest Possible Temperature.

3 Store The Food In The Freezer Until It Is Lyophilized. After About a Week, The Water Will Sublime And All The Water On The Food Will Be Removed. Test The Food By Removing It From a Piece Of Food And Make Sure It Is Completely Lyophilized. If The Food Turns Black, The Food Has Not Been Lyophilized.

4 Store Food. Once The Food Has Been Completely Lyophilized, Place It In The Storage Compartment Of The Freezer. The Air Inside The Bag Is Extruded And Then Sealed. It Is Then Stored In a Refrigerator, Food Cabinet Or Emergency Box.

Method 3 Freeze Dry Food With Dry Ice

1 Place The Food In The Freezer Bag. Put The Bag Flat So That The Food Doesn't Get Together In The Corner. The Air In The Bag Is Squeezed Out Before Sealing The Freezer Bag. Make Sure The Freezer Bag Is Completely Sealed.

2 Place The Freezer Bag In a Large Cooler. Cover The Food With Dry Ice. Wear Gloves Or Long Sleeves When Handling Dry Ice. If You Have a Lot Of Food Bags, You Have To Replace The Food Bags And Dry Ice Until The Cooler Is Full.

3 Place The Cooler In The Freezer. After 6 Hours, Cover The Cooler With a Lid. After 24 Hours, Check If The Dry Ice In The Cooler Is Still There. If Not, The Food Can Be Stored.

4 Take Out The Food Bag From The Cooler. It Is Then Stored In a Refrigerator, Food Cabinet Or Emergency Box.

Method 4 Freeze-Dry Food With a Home Freeze Dryer

1 Place The Food In a Plate Or On a Tray. Plunge The Small Pieces Of Food So That They Are Placed Less Densely.

2 Place The Tray In The Freezer Until The Food Is Frozen. If Possible, Make Sure There Is No Other Food In The Freezer. Do Not Open The Freezer Too Much When Freezing Food. This Slows Down The Freezing Process And Causes The Food To Produce Ice Crystals. If You Have a Deep Freezer, Use It For Freezing. Food Should Be Frozen At The Lowest Possible Temperature.

3 Place The Frozen Food In a Vacuum Chamber And Pull It To About 120 m. Set The Temperature To 10 Degrees Celsius. The Sublimation Process Should Be Completed Within 1 Week, Depending On The Parameters Set. After Waiting For The Appropriate Time, Check One Of The Foods To Ensure The Freeze-Drying Process Is Complete.

4 Store The Food In a Sealed Container.

What Are The Precautions When Using a Home Freeze Dryer?

1. When Preparing Samples For Freeze Dryer, The Surface Area Should Be Expanded As Much As Possible, And It Should Not Contain Acid-Base Substances And Volatile Organic Solvents;

2, The Product Must Be Completely Frozen Into Ice, If There Is Residual Liquid Will Cause Gasification Jet;

3, Pay Attention To The Freeze Dryer Cold Trap Is About Minus 65 Degrees, Can Be Used In Low Temperature Refrigerators, But Must Wear Thermal Insulation Gloves To Prevent Frostbite;

4. Before Starting The Vacuum Pump, Check Whether The Water Outlet Valve Is Tightened, Whether The Inflation Valve Is Closed, Whether The Contact Surface Of The Plexiglass Cover And The Rubber Ring Is Clean And Free Of Dirt, And Is Well Sealed;

5. Under Normal Circumstances, The Freeze Dryer Should Not Be Used Continuously For More Than 48 Hours;

6. Finally, During The Freezing Process, The Temperature Gradually Decreases, And The Sample Can Be Taken Out And Warmed For a While, And Then Dried To Shorten The Drying Time.