Method 1: a prep work approach of licorice extract, which is defined in that the crushing of the raw products embraces the blasting approach, and also the acquired blasting product is removed with dilute ammonia water. Due to the fact that the raw products are reasonably completely broken, the effect of ammonia water removal is great, the removal efficiency is dramatically enhanced, and the yield of glycyrrhizic acid is increased. Furthermore, there is not a problem of resources loss and environmental pollution triggered by dust created by squashing. The supposed blasting approach is to send the licorice cut into sections into the blaster, as well as pressurize it to 0.785MPa-1.177 MPa with steam. (174.5 ° C-190.7 ° C). Nurture at this temperature level for 0.5-3 minutes. If the temperature level is as well low or the holding time is too short, the crushing impact of the raw products will not be good; if the temperature level is too high or the moment is as well long, the active ingredients in the licorice will certainly be ruined. After the raw products are treated with heat and also high pressure, the discharge shutoff of the gun is all of a sudden opened up, and also the licorice with loose tissue after a brief duration of food preparation is splashed out. Relying on the stress distinction inside as well as outside the licorice cell dental caries, the licorice is damaged like popcorn. The fibers are divided, the cell cavity is revealed, and the cell wall is fractured. This kind of licorice is practically totally split, and also the active ingredients can be conveniently extracted by water or other solvents. The device utilized throughout blowing up can be periodic gun or continuous blaster.: the licorice after the blasting is sprayed right into the spray frying pan accumulating splashed items, then sent out into the extraction container, as well as adding concentration is 0.1% -0.5% ammonia remedy in the extraction tank according to the fluid proportion, the focus is as well low The removal impact is not evident. If the focus is expensive, the boost of the leaching rate of active ingredients is not noticeable. In the alkaline remedy, the pit membrane layer in the licorice cells is ruined, the cellulose swells, and the osmotic capacity of the remove is dramatically improved, and also it is simple to go into the cell wall. And in the unruptured cell lumen, it is more conducive to the leaching of energetic components.
Approach 2: a prep work of deep-fried licorice extract, making up the complying with steps:
1) After cutting the licorice right into sections, stir-fry until the skin color of the licorice discolors until the licorice is somewhat yellow;
2) Add water to the deep-fried licorice symphonious 1) according to the weight proportion of deep-fried licorice to water of 1:5 to 1:7, then condense and reflux to extract the water essence, and condense the water remove to create the initial concentrate;
3) Include 95% ethanol to the deep-fried licorice in step 1) according to the weight proportion of deep-fried licorice and also 95% ethanol of 1:7 to 1:9, and after that condense and also reflux to remove the ethanol extract;
4) Mix the concentrated option for the first time in step 2) with the alcoholic remove symphonious 3), mix equally, and speed up with alcohol, after that filter and concentrate to form the 2nd concentrated service;
5) Add propylene glycol to the second focused service to prepare deep-fried licorice extract. The weight ratio of the second focused remedy to propylene glycol is 1:0.04 ～ 1:0.06, and also the propylene glycol is used for antisepsis.