Method of making longan seed extract

Abstract

A method of making longan seed extract is provided with choosing an extraction solvent; heating the extraction solvent to a first predetermined temperature; adding pulverized longan seed to the extraction solvent to prepare a solution; maintaining the solution at a second temperature for a predetermined period of time to obtain an extracted substance; filtering the extracted substance; and drying and cooling the filtered extracted substance to produce an extract.

1 . An extraction method comprising the steps of:
 (1) choosing an extraction solvent;   (2) heating the extraction solvent to a first predetermined temperature;   (3) adding pulverized longan seed to the extraction solvent to prepare a solution;   (4) maintaining the solution at a second temperature for a predetermined period of time to obtain an extracted substance;   (5) filtering the extracted substance; and   (6) drying and cooling the filtered extracted substance to produce an extract.   
     
     
         2 . The extraction method of  claim 1 , wherein the extraction solvent is either water or inorganic compound. 
     
     
         3 . The extraction method of  claim 2 , wherein the inorganic compound is a solvent having a predetermined volume concentration of ethanol. 
     
     
         4 . The extraction method of  claim 3 , wherein the predetermined volume concentration of ethanol is about 20-95%. 
     
     
         5 . The extraction method of  claim 1 , wherein the first predetermined temperature is about 70-90° C. 
     
     
         6 . The extraction method of  claim 1 , wherein the second predetermined temperature is about 70-90° C. 
     
     
         7 . The extraction method of  claim 1 , wherein the predetermined period of time is about 1-3 hours. 
     
     
         8 . The extraction method of  claim 1 , wherein the extract comprises corilagin, ellagic acid, and gallic acid. 
     
     
         9 . The extraction method of  claim 8 , wherein the extract comprises corilagin, ellagic acid, and gallic acid. 
     
     
         10 . The extraction method of  claim 8 , wherein the extract comprises corilagin, ellagic acid, and gallic acid. 
     
     
         11 . The extraction method of  claim 8 , wherein the extract comprises corilagin, ellagic acid, and gallic acid. 
     
     
         12 . The extraction method of  claim 8 , wherein the extract comprises corilagin, ellagic acid, and gallic acid.