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Your Location: Home >> Application >> User case >> What are the applications of vacuum freeze dryer in health food?

What are the applications of vacuum freeze dryer in health food?

Release Date: Tuesday 11 . 2018
Browse: 338

What are the applications of vacuum freeze dryer in health food?

Freeze-dried roses are a kind of “eternal flower” popular in the flower market, but it is also a kind of freeze-drying machine used in health foods. Because rose is a perennial shrub of Rosaceae, it has a long history of medicinal use. It is one of the most precious herbs in China. "Compendium of Materia Medica" contains: "Rose flowers and blood, blood, spleen and fire, qi and menstruation, nourishing beauty."

 

The traditional rose flower processing is obtained by the original heating and baking process. Due to the high heating temperature, the color of the flower buds becomes dark. In order to make the color bright, a few processing points are smoked by sulfur. In addition, due to the high heating temperature, the aroma of rose flowers is almost completely lost.

With the continuous development of vacuum freeze-drying technology, the application of freeze-drying machine in health foods, the dried biological activity of the rose active ingredient is minimally destroyed, the shape is well preserved, the nutrients and active substances of the rose are maintained, and the moisture content is low. High sugar content. The color is rosy, crystal clear, easy to transport and long-term storage.

   The method for preparing vacuum freeze-dried rose flower is characterized in that the steps include: a. rose picking; b. vacuum freeze drying: vacuuming to 15 kPa to 25 kPa, simultaneously starting refrigeration, and vacuum drying and drying in 2 to 4 hours. The temperature of the cold trap of the machine is reduced to -40 ° C ~ -65 ° C, the holding time is 0.5 ~ 2 hours; the rose is heated to 0 ~ 15 ° C within 9 ~ 30 hours, so that the rose flower is dry.

 

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