Advantages Of Freeze Dryers

First, the advantages of freeze dryer

Compared with other drying methods, freeze drying has many advantages, mainly:

1. Preserve the color, aroma and taste of the sample to the greatest extent. For example, the natural pigments of vegetables remain unchanged, and the loss of various aromatic substances can be reduced to a minimum. Freeze-drying is better for preserving protein-containing foods than ordinary freezing.

2. It is especially suitable for heat-sensitive substances, which can keep heat-sensitive components after drying the heat-sensitive materials; it can preserve all levels of nutrients in food, especially vitamin C, which can preserve more than 90%.

3. Operating under vacuum and low temperature, the growth of microorganisms and the action of enzymes are inhibited.

4. Complete dehydration, dry products are light in weight, small in size, occupy less floor space during storage, and are easy to transport; various freeze-dried vegetables are briqueted, and the weight is significantly reduced. Due to the reduced volume, the packaging costs are correspondingly much less.

5. Fast rehydration. Because the moisture contained in the dried material is directly evaporated in the freezing state, during the drying process, the water vapor will not drive the soluble substances to move to the surface of the material, and will not deposit salts on the surface of the material, that is, no hard material will be formed on the surface of the material. Thin skin, there is no tension on cells or fibers when the central moisture moves to the surface of the material, and it will not cause deformation of the material due to shrinkage after drying, so it is easy to absorb water to restore its original state.

6. Due to the operation under vacuum, there is very little oxygen, so some easily oxidizable substances (such as oils and fats) are protected.

2. Product introduction:

Vacuum freeze-drying technology, referred to as freeze-drying, also known as sublimation drying. Used in pharmaceuticals, biological products, chemical and food industries. Freeze-drying technology is very suitable for heat-sensitive substances such as antibiotics, vaccines, blood products, enzymes and hormones and biological tissues.

3. Main features:

Equipped with USB communication interface to facilitate data download; with heating shelf (high 65 ℃), shelf heating curve can be preset, automation of experimental sublimation process; can be configured with air valve, can be filled with dry inert gas; LCD display: shelf Temperature curve, cold trap temperature curve, sample temperature curve, vacuum degree curve and combination curve; 36 user programs can be memorized, each program can control up to 32 temperature control sections, and the freeze-drying curve can be memorized. ; Equipped with RS232 interface, which can be directly connected to the computer to display the lyophilization curve in real time