Because solid food takes more time to digest and to break down the protein and send it to the muscles, it can be best to take a protein shake immediately following a workout, since protein shakes only take about 30 minutes to reach the muscle after ingestion.
selectivity. (analytical chemistry). The ability of a type of method or instrumentation to respond to a specified substance or constituent and not to others. (electronics). The ability of a radio receiver to separate a desired signal frequency from other signal frequencies, some of which may differ only slightly from the desired value.
1. 1  Physical Chemistry. a substance made up of a system of particles with linear dimensions in the range of about 10 â7 to 5 Ã 10 â5 cm dispersed in a continuous gaseous, liquid, or solid medium whose properties depend on the large specific surface area.