What are freeze dryers used for?
(1) Application in biological products
a. Live bacteria vaccine. For example, BCG vaccine, meningococcal vaccine, tuberculosis vaccine, oral live dysentery vaccine, salmonella, streptococcus, etc.
b. Fire vaccine. For example, measles vaccine, flu vaccine, rabies vaccine, chicken plague vaccine, etc.
c. Other biological products, biochemical drugs. Hepatitis B surface antigen diagnosis snowball, human leukocyte interferon, coenzyme A (CoA), adenosine triphosphate (ATP), urokinase, etc.
(2) Application in the production of western medicine
Most of them are injections, mostly antibiotics, circulatory organs, central nervous system, vitamins and tumor drugs. For example, ampicillin, Lijunsha (erythromycin ethylsuccinate tablets) and so on.
(3) Application in the production of Chinese medicine
In recent years, the freeze-drying method has been used to process Chinese patent medicines. The prepared Chinese patent medicines are dipped, extracted, filtered, concentrated, and freeze-dried, and then made into powders, tablets or injections.
(4) Medical applications
The freeze-drying technology can preserve various organs such as blood, arteries, bones, skin, cornea and nerve tissue for a long time. The cells are not destroyed when freeze-dried, and the organism can be revived after rehydration. For example, freeze-dried bones can be stored at room temperature or in the refrigerator for up to 2 years.
(5) Food applications:
a. Cooking ingredients: meat, eggs, fish, vegetables, etc.
b. Raw materials for food industry: milk powder, egg powder, vegetable protein powder, tea, dried fruits, meat powder, soy powder, etc.
c. Beverages: coffee, fruit treasure, etc.
d. Supplements: pollen, bee powder, turtle powder, etc.
(6) Other applications of freeze-drying technology:
a. Microorganisms and algae: such as long-term preservation of various bacteria, yeasts, enzymes, protozoa, microalgae, etc.
b. Biological specimens and biological tissues: For example, the production of various animal and plant specimens, dry preservation of skin, bones, aorta, heart valves and other marginal tissues used for animal xenograft or allogeneic transplantation.
c. Make small tissue slices for optical microscope, electronic scanning and transmission microscope.
d. Food drying: such as coffee, tea, meat, fish and eggs, seaweed, fruits, vegetables, spices, tofu, convenience foods, etc.
e. Advanced nutrition and Chinese herbal medicine: such as royal jelly, honey, pollen, Chinese herbal medicine preparations, etc.
f. Preparation of ultra-fine powder: such as preparing ultra-fine powder such as Al2O3, ZrO2, TiO2, Ba2Cu3O7-8, Ba2Ti9O20.
g. Other aspects: such as the catalyst in the chemical industry, which can increase the catalytic efficiency by 5-20 times after freeze-drying; freeze-dry plant leaves and soil to study the influence of soil, fertilizer, and climate on plant growth and the role of factors; Wet wooden cultural relics and drowned book manuscripts are dried by freeze-drying.
