Whey milk proteins and starches are important sources of wall materials applied in spray-drying, extrusion, and molecular inclusion microencapsulation processes commonly used in food and medicine manufacturing. The objective is protect active components, including aroma, color, and flavor, during processing and packaging. In these processes, sensitive components are coated in, or protected by, wall materials that improve handling and application and increase the shelf-life of core materials. Whey milk proteins and starches may be able to replace the common wall material arabic gum and could be used alone or in mixes to improve their characteristics and specific applications in microencapsulation.