Freeze-drying technology When drying tea leaves, the temperature of the tea leaves always stays below -16°C. Due to the low temperature of the tea leaves, the chlorophyll hardly changes, the color is green and green and resistant to hiding, the aroma and the original nutrients and various organic substances in the tea leaves are almost Without loss, even drying, the water content can be as low as 3% or less; at the same time, the water has been frozen before drying, the product has a sponge-like porosity after drying, the product has good rehydration, and the contents dissolve easily when the tea is brewed. Freeze-dried tea can improve the quality of the tea industry by one to two grades on the basis of traditional techniques. The tea dried with this device can maximize the preservation of color, smell, taste, shape, water content can be reduced to 3% or less, so the product quality is greatly improved, and to maximize the product's shelf life. Good product quality; Freeze drying equipment Generally, when hot tea is used to dry tea leaves, the tea leaves are heated in the hot air, and some of the organic substances in the tea leaves continue to oxidize under the heated state, which consumes a part of the nutrients; the chlorophyll is also decomposed and destroyed at high temperatures and the color of the tea leaves is darkened; Some of the aroma substances also dissipate with the hot air, and the water content can only reach about 9 to 12% under normal circumstances. The product is not resistant to storage. News link: Freeze drying is also called sublimation drying. A method of drying in which the aqueous material is frozen below the freezing point, the water is converted to ice, and then the ice is removed to steam in a higher vacuum to remove it. The material can be frozen in a freezer before drying. However, it can be directly frozen in the drying chamber and quickly frozen. The vapor generated by sublimation is removed by a condenser. The vaporization heat required during the sublimation process is generally supplied with heat radiation. HDPE or LDPE Plastic Apron is commonly used in Kitchen, Bakery, Food processing, Supermarket, Medical Examination, DIY, Hotel, Restaurant, Beauty Salon, Haircut, Hair Dyeing, Hospital Lab, retail store, shopping mall, grocery stores, daily household etc.
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