There are many different uses for the freeze drying process. In this article, we’ll explore when it was first used, what it was used for, and how the technology was originally developed. We’ll also discuss the many benefits of freeze-drying food ingredients. So, what is the history of the freeze-drying process? Let’s find out!
How Long Ago Was Freeze Drying Invented?
Freeze-drying, also known as lyophilization, is an ancient process for preserving perishable materials and making them more portable. It works by freezing materials and then reducing the surrounding pressure, causing the water to be sublimated. The process was first used by the Andean Indians in the 13th century. However, it was not until the 1950s that it became a highly refined technology that was made more readily available.
The first freeze-drying technique was developed during World War II for the preservation of blood plasma. The organic nature of blood plasma made the process ideal for storing it. After the war, freeze-drying became common in consumer food products. In 1890, a German scientist named Albert Altmann successfully freeze-dried organ pieces. In the 1920s, Jacques Vansteenberghe and Jacques Arsene d’Arsonval patented a method for freeze-drying the rabies virus. Then, during the 1950s, freeze-drying was used for a variety of products, including ready-to-eat camping food.
It was important for NASA to make food suitable for astronauts, and freeze-drying proved to be a valuable tool in the space food preparation process. In 1965, the first freeze-dried instant coffee was released by Nestle. Within a few years, the process became mainstream and new types of foods were created for the public. The technology was used in space on Apollo 7 and Gemini, where freeze-dried ice cream was famously launched into space.
What Was Freeze Drying Used For in History
The first known applications of freeze-drying date back to the prehistoric era. For example, the Aztecs and Eskimo used freeze-drying techniques to preserve biological samples. Later on, however,the development of vacuum-plants that worked well for the preservation of foods came about.
This quickly led to the process being developed for industrial purposes during World War II. As time passed, it became an industrial preservation method. But even then, the method wasn’t used as widely as it is today.
How Has Freeze Drying Technology Developed
Freeze drying processes have been around for many years, but how has this technology evolved? The process entails the freezing of a product in a specially designed drying chamber, and the use of a heating element or agitator to force the material to freeze as solid granules. The speed and geometry of the drying chamber determine the granule size. In some cases, additional heat is added to encourage faster processing.
A new type of freeze-drying system has emerged in the past several years. Some trays are made of polypropylene and are sterile, so they can be used in both large-scale and laboratory freeze-drying processes. Additionally, some trays feature a semipermeable membrane of expanded polytetrafluoroethylene laminate that allows water vapor to pass through. This helps prevent the product from being dislodged from the tray during the drying process.
Freeze Drying Today And Its Benefits
Food preservation is a growing concern in our society, with many people freezing foods to prevent food waste. They do so to avoid spending money on prepackaged meals as well as to prepare for emergencies. Freeze-drying is easier than dehydrating or canning and can last 7 to 8 times longer than fresh products. In addition to saving money, freeze-dried foods are more nutritious than fresh ones.
Freeze-drying also preserves the nutritional value of dairy products. Freeze-dried cheese melts easily, retaining all its original nutrients, and did you know that freeze-dried yogurt retains its probiotic cultures? In addition to being healthier than other long term preserved foods, freeze-dried foods are convenient.
One Great Benefit for Small Business Owners
Choosing Shepherd Foods for your freeze dried food ingredient wholesale suppliers can offer plenty of benefits for your business. Your food product supply will be greater, and the length of time you can store them will increase as well! Offer your consumers delicious, nutritious freeze dried food ingredients from our industry grade professional facility for impressive quality. Give us a call today at (800) 497-8321 to discuss our co-manufacturing and co-packing options. You can visit our website for more information about the solutions we offer.