Patent ID: 7387808

Claim:
A method for preparing persimmon vinegar powder, comprising the steps of the following: concentrating a persimmon vinegar to 12˜18° BX in a vacuum concentrator to obtain a concentrate of persimmon vinegar; adding 15˜30 weight % of extract of persimmon leaf and 5˜9 weight % of cyclodextrin, based on weight of the concentrate, to the concentrate to obtain a solution and then stirring the solution at 0˜30° C. for 30˜180 minutes, wherein the extract of persimmon leaf is prepared by steaming persimmon leaves at 100˜120° C. for 1˜10 minutes, drying it for 1˜2 hours using a hot blast at 35˜50° C., adding 8˜12 liter/kg (dried persimmon leaves) of water to the dried leaves, extracting the leaves at 90˜100° C. for 10˜30 minutes, compression filtering the extract to obtain a liquid, and then concentrating the liquid to 12˜18° BX; dissolving 1˜5 weight % of lactose, 25˜35 weight % of maltodextrin, and 5˜9 weight % of gum, based on weight of the concentrate, in the stirred solution and homogenizing the solution at 0˜30° C. for 2˜10 minutes, wherein the gum is at least one selected from the group consisting of carrageenan, agar, alginate, guar gum, gum arabic, locust bean gum, xanthan gum, pectin and carboxymethyl cellulose; and spray drying the homogenized solution using spray drier while the homogenized solution being infused into the spray drier at the rate of 20˜40 ml/min, under conditions of inlet air temperature of 150˜180° C., outlet air temperature of 80˜100° C. and atomizer speed of 15,000˜25,000 rpm, so as to obtain a powder.