In this study, we use sodium alginate as the shell, lemon oil as the core to prepare the calcium alginate microcapsules encapsulated lemon oil by orifice method. By changing the concentration of alginate, the concentration of CaCl2, the different surfactants and stirring speed of homogeneous, we can find the best propriety condition to prepare the microcapsule. Also, we can compare the controlled release of different conditional. The result shows 2% concentration of alginate, 5% concentration of CaCl2, and Tween20 surfactant at 24000 rpm is the optimal manufacturing conditions.
