The objective of this paper is to review the state of the art of microencapsulation of food ingredients by spray-drying and present necessary theoretical and practical information on this process. Thus, the present paper discusses the uses of spray-drying for microencapsulation ends from four perspectives. First, it focuses on some theoretical aspects of the spray-drying process. Next, the paper discusses the application of spray-drying in microencapsulation of food ingredients. The third section presents criteria required for encapsulating agents and describes
several wall materials that have proved good encapsulation efficiency. The final part summarizes important recent applications concerning the microencapsulation of food ingredients by spray-drying