Abstract: In this paper，the composition of wall materials and the technology of spray-drying for the microencapsulation of dihydromyritin have been  studied,and arabic gum and maltodextrin have been used as wall material.The results show that the optimum microencapsulation technologies of dihydromyricetin are that the ratio of dihydromyricetin and wall materials is 15/85,the ratio of Arabic gum and maltodextrin is 70/30,the inlet air temperature is 190 ℃ and the solid raw content is 20%,thus the microencapsulation efficiency can reach to 95%.

Key words: dihydromyricetin, microencapsulation, spray-drying