A preparation method of an areca nut product, comprising:
- step 1:
- mixing citric acid with water 10 times a weight of the citric acid to obtain a citric acid solution, heating the citric acid solution to 100 Celsius degrees (° C.), cooling down the citric acid solution to 50° C., placing the citric acid solution in a barrel, immersing areca nuts in the citric acid solution and adding vinegar into the citric acid solution, immersing the areca nuts in the citric acid solution for 12˜16 hours, and taking out and drying the areca nuts to obtain dried areca nuts;
- step 2:
- cleaning a mixture comprising ginseng, atractylodes macrocephala, poria cocos, liquorice, astragalus, notoginseng, tangerine peel, folium eucommiae, and citronella grass to obtain a cleaned mixture, crushing the cleaned mixture, steaming the cleaned mixture after crushing in a steamer for 30 minutes to obtain a steamed mixture, drying the steamed mixture after taking the steamed mixture from the steamer, adding isomaltooligosaccharide into the steamed mixture for mixing evenly and adding mucor into the steamed mixture, and fermenting the steamed mixture in a fermentation tank at a room temperature for 30 days, thereby obtaining a fermented mixture;
- step 3:
- adding bovine bone collagen peptide, chitosan, lipase, zinc oxide, soybean lecithin into the fermented mixture, and adding monazite calcined distilled water into the fermented mixture for mixing evenly, thereby obtaining an additive agent, wherein the zinc oxide has a particle size in a range of 1 nanometer (nm) to 100 nm;
- wherein the monazite calcined distilled water is prepared by:
- crushing monazite to obtain a monazite powder, putting the monazite powder into a furnace with a temperature of 1800° C.˜2000° C. to burn the monazite powder for 75˜105 minutes to obtain a burned powder;
- cooling the burned powder to obtain a cooled powder;
- and putting the cooled powder into a 800 mesh˜1000 mesh cloth bag and distilling the cloth bag in a steam oven to obtain distillation steam to thereby obtain the monazite calcined distilled water;
- and
- step 4:
- cutting each of the dried areca nuts into two pieces, adding an additive agent according to a weight ratio of 10:1 between the dried areca nuts and the additive agent, evenly stirring the dried areca nuts and the additive agent to obtain an areca nut pre-product, and drying the areca nut pre-product to obtain the areca nut product.