Medicinal lyophilizer in licorice freeze-drying preservation method!
Main steps are as follows:
1, the pretreatment: remove licorice adventitious roots of sundry, wash and dry the surface water;
2, early freeze: cool in vacuum dryer to 25 ~ 40 ℃ ‑ ‑, pre freezing 20 ~ 25 h;
3, vacuum freeze drying: will step 2 of licorice adventitious roots in a freeze-drying machine, vacuum to 20 ‑ pa, 50 in the cold trap temperature 40 ~ 60 ℃ ‑ ‑, freeze-drying 10 ‑ 15 h, removed.
4, vacuum packaging.
the method reference: gao wy & quot;
Licorice adventitious roots of freeze drying preservation method & quot;
。
fresh licorice by freeze-drying equipment after freeze-drying preservation, can maximally save the activity of the active ingredients of medicinal, original shape, color, smell, save and keep licorice root fresh color, aroma, taste, and the product after water is good, is advantageous for the long term storage, transportation and sales.
