Abstract:Using the film-forming properties of calcium lactate and sodium alginate，this article mainly explored the effects of compound ratio of sodium alginate-low-ester pectin composite gel system，calcium lactate concentration，balling time and core liquid loading volume on the characteristics of breakable capsules.The particle size，shell thickness，drop test performance，appearance and bursting mouthfeel of the breakable capsules were taken as the evaluation indicators for optimization of the preparation process through single factor test and orthogonal test.The Chinese medicinal materials that help regulate gastrointestinal function were added into the liquid.The liquid formula was optimized via orthogonal test with sensory score as the indicator.The optimal preparation conditions:Chinese medicine decoction mixed with sodium alginate and low-ester pectin composite gelsystem（concentrationof1.2%，volumeratioof7∶3)as the core liquid，the core liquid loading volume of 530 μL，calcium lactate concentration of 2.1%，and balling time of 20 min.To 100 mL core liquid，the optimal addition of xylitol and citric acid was 4 g and 0.1 g，respectively.The breakable capsules prepared with the above conditions and formula were compared with two commercial products in terms of texture properties，basic parameters and sensory characteristics.The breakable capsules produced in this study were pink spheres with smooth surface and had suitable particle size，moderate shell thickness，good texture properties，and springy and bursting mouthfeel，demonstrating high quality.