Spray drying refers to high-temperature evaporation extraction. When the coffee liquid is put into a high-temperature ejector, the water in the coffee will evaporate at high temperature, leaving small particles of dry concentrated coffee extract.
But in the whole process, high temperature will make some volatile compounds in coffee volatilize, especially caffeine and aroma. Spray drying is to spray coffee extract into hot air and then quickly dry it into fine powder or small pieces.
Instant coffee mainly introduces:
Instant coffee is a dry coffee extract obtained by evaporating water in the coffee extract. Instant coffee can be quickly dissolved in hot water, which takes up less space and volume during storage and transportation and is more resistant to storage. Instant coffee is different from the complicated traditional coffee brewing method, so it has gained wide popularity.
Instant coffee is not as nutritious as traditional coffee brewed with fresh coffee beans. High in fat and sugar, low in high-quality protein and caffeine. The essence of coffee may be lost in the process of making, and it is harmful to drink it often.